WATT the hell is an amp hour? Patrons Bonus Vid
Added 2018-07-25 18:24:46 +0000 UTCA special shout out to Steve for asking this question, you know who you are buddy :)
If you've ever wondered what the hell an amp hour is, how to calculate your power usage onboard, and what it means with respect to battery capacity then this video is for you!
I'd like to do more of these types of videos, so if you guys have any suggestions let them fly below! Fair Winds and as always sending lot's of love from Delos to you. Capt. Brian
PS- Patrons Bonus Videos are just a little way for us to say thank you for all the support, so thanks again :)
Comments
Thx for the good explaining
George Van Der Kolk
2018-08-20 13:32:40 +0000 UTCWhat type of voltage regulation do you use with respect to the output voltage from your engine's alternator?
Matt Phillips
2018-08-18 16:58:27 +0000 UTCQuestion for you Captain Amp Hour!
Matt Phillips
2018-08-18 16:57:00 +0000 UTCReally well done Captain!
Matt Phillips
2018-08-18 15:51:34 +0000 UTCLoved it! Thanks Capitan.
Alvaro Prado
2018-08-07 04:59:25 +0000 UTCThanks Brian, you have a knack for teaching! All that Math stuff mystifies me !!!!
Gary Starkey SV Ausdauer
2018-08-03 05:07:08 +0000 UTCI work for the local power company. Great explanation of Amp-hours. The solar production would also be great, and explain why you have to use the batteries to start the frig and other motor driven systems. Solar and wind are chargers, they do not have enough current density to start motors.
Dean Moore
2018-08-01 02:23:36 +0000 UTCThis is a great argument for using LiOn batteries which can discharge to 20% regularly and sustain 2000-4000 cycles. Great vid, thanks!
William Butler
2018-07-31 16:37:01 +0000 UTCmore of this kind of videos!
Otto Van De Steene
2018-07-31 11:24:04 +0000 UTClook how nicely he cleans up!!!!
James Bond
2018-07-31 00:06:55 +0000 UTCSo does Delos have Lead Acid, AMG, or Lithium Batteries??
SV Trippin'
2018-07-30 13:06:05 +0000 UTCBTW, we don't have a power inverter onboard, we decided that we're not going to need things like a microwave, and you can get universal laptop power supplies that happily run off 12V DC for something like 20 €. Especially with computers, it hardly makes sense to first convert the DC to AC and then back to DC - you end up generating a lot of heat for nothing :)
Janne Peltonen
2018-07-30 11:37:46 +0000 UTCWhee, great video! I tried to make a similar calculation when figuring out the battery capacity required for my boat a couple years back. I did end up using deep cycle AGM lead acid batteries, since they are much more resistant to deep discharge than traditional ones; they provide a decent amount of recharge cycles even with 80% depth of discharge.
Janne Peltonen
2018-07-30 11:31:24 +0000 UTCLithium Polymer batteries are a whole different story. I mean, you can actually kill them in *one* discharge if you discharge them deeply enough; that's why most LiPo batteries come with a safety circuit that disconnects the actual cells from the battery poles before you run them that low. I did actually manage to kill a laptop battery once by leaving the computer turned off but connected to cable ethernet for a summer - the small blinking ethernet led drained the battery but the current was too small so the safety circuit didn't work. (Or at least I think that was what did it.)
Janne Peltonen
2018-07-30 11:24:28 +0000 UTCTelecommunications authorities might dislike those, at least in the Nordic countries you basically have to be a licensed mobile operator to use an active cell repeater :/
Janne Peltonen
2018-07-30 11:21:06 +0000 UTCI'm with you Brian and Kerry - death to the rotten apples!
Digital MacGyver
2018-07-30 06:46:52 +0000 UTCHi Brian, I am not picking up my boat until mid-August - but appears to have the opposite set up - it “steps down” - meaning everything will still works - bit is 17% less efficient at 50hz...
Peter Loehr
2018-07-30 05:05:31 +0000 UTCresearch shows that with lithium polimer batterys 80% discharge will increase the life by about 30%. the big killer for lipo batterys is high rate of discharge.
Brook Reimer
2018-07-30 03:42:59 +0000 UTCDefinitely...we love any tech stuff explained. Great job B.
SV NaniOla
2018-07-29 20:58:51 +0000 UTCThank you brian
Arnold, Clara, Luna and Noa
2018-07-29 17:28:32 +0000 UTCI'm not really sure about that. I'm pretty sure mobile phones use a different battery chemistry, I think Lithium Polymer which can be build smaller and thinner. Not sure how they hold up to high usage discharge cycles though!
Sailing SV Delos
2018-07-29 11:42:23 +0000 UTCBrian, when u say u only use about 50% of the battery capacity so u get more charging cycles, does the same applies to mobile phones ?
Arnold, Clara, Luna and Noa
2018-07-28 21:54:27 +0000 UTCVery cool lesson, many thanks. Keep 'em coming!!
Colin Strain
2018-07-28 21:51:09 +0000 UTCOn the subject of electrical systems, do you use or plan to use any type of cell repeaters, such as the Yagi antenna that you 'aim' at the inland GSM, CDMA, UMTS, LTE, et cetera, that connect (usually via a 10 meter cable), to a booster/repeater then to an booster-mounted or central located 'indoor' antenna connected to the booster/repeater via a given length of coaxial cable? Both cables usually are 5D-FB Coaxial Cable OD7.5 ( High transmission speed, High quality). I have seen/used these on land many miles from my carriers nearest tower, and it works wonders at a cabin cut off from everything where it is either fly-in to a lake or a long days hike in.
Walter Jinright
2018-07-28 02:33:29 +0000 UTCI would say it is good to have an electrical engineer on board because Brian you do an awesome job at keeping everything running smooth. fair winds guys and girls
Garry Gill
2018-07-27 15:35:24 +0000 UTCLove these types of videos, Brian. The video on navigation and NMEA you did a while back has me thinking about all sorts of tools that I could write that might be useful to cruisers. Fair Winds Brother!
Adam Licht
2018-07-27 14:59:17 +0000 UTCYes in fact we have since replaced our bank with Lithium. That will be the next video actually so stay tuned :)
Sailing SV Delos
2018-07-27 12:57:18 +0000 UTCHey Stephen! Nice, glad you enjoyed! So that lifespan really varies with the panufacturer as well. We got 6 years out of our first set of LiFeLine batteries, but then in Malaysia we couldn't get those and went with a brand manufactured in China. We treated the same and they lasted less than two years :(
Sailing SV Delos
2018-07-27 12:56:47 +0000 UTCWill you look at lithium Iron next time, as whilst they are expensive 500 cycles goes to 3500 or more DOD can go to 90% without damage or more and is less weight, i am currently researching this at the moment , the only limitation i see is the maths and funds
Stephen Lincoln
2018-07-27 10:13:22 +0000 UTCHey Brian great Video my name is Stephen as well , i think what you said was very understandable for non electrical people . As you suggest 50% usable capacity or (depth of discharge) gives you 500 charge dischage cycles, Question i have out of curiosity is how many years do you believe your averaging out of a set .
Stephen Lincoln
2018-07-27 10:08:49 +0000 UTCAh ha! On my yacht I have 8 x 6v batteries, so two banks of 4 x 6v to make 24v and 378AHr! In addition I have two 12v batteries in series to start the engine and finally another 12v for the generator. I have looked at changing to Lithium. Have you converted?
Boyd GOLDIE
2018-07-27 08:28:49 +0000 UTCWaaaooow! This is so cool! I need to watch it few more times though ... Allan will love it! :) Like this kind of hands on videos so much. Really gives a great view of all the sides of sailing that we "landkrabbor" don't know. Bring em on! <3
Märta Syren
2018-07-27 08:21:18 +0000 UTCHe Larry, yes we will definitely hit the wind and solar topic next. Regarding LED- we have switched everything out in the boat. Even the deck lights. They draw about 1/10th of the power as the old halogen bulbs! Amazing, it's like having 10 lights for 1 :)
Sailing SV Delos
2018-07-27 08:10:22 +0000 UTCYo Mike, thanks for the comment bro and have fun in Marth's Vineyard! I do think and update on the wind sensor is in order. It turned out to be a problem with the unit itself and Maretron replaced under warranty. Once that was fixed been working like a champ. They did provide very good customer service for the issue, it just took a while because it's hard to coordinate a return when we are always out on the ocean or in remote places. Fair winds- Brian
Sailing SV Delos
2018-07-27 08:08:43 +0000 UTCHey Boyd, good question! So we have 8 batteries in total, all of them are rated 100AH at 12V. We link 2 batteries in series to make 24V, which is basically the same as now having 4 x 24V batteries. So effectively we have 4 24V batteries in series. We do have a separate starter battery which is just a standard 12V lead acid marine starting battery. Nothing special there. Fair Winds! Brian
Sailing SV Delos
2018-07-27 08:06:49 +0000 UTCYes, great video! Look forward to the next one and how much you generate power from wind, solar and generator. Also wondering if you utilize any LED for general lighting, navigation and deck lighting? The RGB deck lights would look super cool at night. Really enjoyed the tech talk!
biotex
2018-07-27 05:04:23 +0000 UTCGreat job guys. Loved it, best I have seen and I should know I went to Electronic Institute for 3 year course.
Steve Whitacre
2018-07-27 02:41:36 +0000 UTCYes Dan, I have been trying to do this myself. Just bought a small sailboat (Siren 17), not sure if it even floats because I have had a lot of little things to do to it before even getting on the water. I will try and post some video on Youtube one day. However, there is so much to learn from the Delos crew. They have an interesting boat, they are expert sailors and also expert videographers. I was thinking about Capt. Rick also, his drone footage is probably the best out there, but that is what he does, he is a pro. Nothing wrong with giving the Delos crew a challenge...
Tod Christianson
2018-07-26 21:23:06 +0000 UTCI also would like to hear more on this topic. Stuff like how you calculate the recharge rate, size of solar panels, how often and under what conditions you need to run generator, etc. Great video, interesting topic.
Gordon Potter
2018-07-26 20:21:15 +0000 UTCI was happy to watch you get the Ah to Wh correct. Many folks goof that up. I do admire the Brian MacGyver videos.
Craig Kirkpatrick
2018-07-26 19:08:43 +0000 UTCGreat great great video Brian. Very good explanation and passing it on. Yes would love to see more technical videos ! Good one guys ! Thanks for all the effort
Arnold, Clara, Luna and Noa
2018-07-26 18:52:13 +0000 UTCNot quite sure I understand your meaning? Because I have a power boat? I love sailing. Would have preferred a sailboat but this boat all but landed on me.
Eric Carney
2018-07-26 18:37:11 +0000 UTCGood for you to share some of the tech side of sailing. Yes, as opportunities arise please share more of the tech stuff. Video of your sailing techniques and if possible what was done to Delos haul out at Grenada would be interesting.
Ray Lehman
2018-07-26 17:39:29 +0000 UTCI must admit I would like the idea, seems like I saw more of how fun it would be to sail on Delos from the Captain Rick Moore videos than all of the Delos Ep ...Just Saying. However all this would be cool but how much can we expect from a video; why not just get on a boat and try it out for yourself. With all due respect to your great idea. Dan
Dan Nytes
2018-07-26 17:01:14 +0000 UTCWhy are you choosing ASA certs.?
Dan Nytes
2018-07-26 15:17:34 +0000 UTCI would love to hear an update on some of the old fixes and upgrades. The update on the genie impeller for one was eye opening. I didn't realize the missing vane would be such a big deal. The navigation package would be awesome to see too. I have a 'lil Marshall 22. TABITHA is a 22' catboat but I wanted to add some electronics. I almost went with the wind sensor you have, but decided to go for a Garmin unit when I saw you were having issues. I know it's hard to put out negative reviews of gear, but honestly, they're the only ones worth watching. - Another cool piece would be to insert "Brian Facts" as opposed to "Brady facts" about vocabulary or history of boats. You could talk about the bowline knot, or why starboard is called starboard, or why we call ships by female. Maybe even a proper renaming ceremony. I'm on my way to Martha's Vineyard tomorrow for a Regatta - wish me luck! Fair Winds . . .
Mike Murphy
2018-07-26 14:21:55 +0000 UTCThis. So many people love sailing, but really have no idea how it all works. They think sailing is still like the square sails and have no idea how the keel and the sail work together. I would also add racing would be a good fun subject. How to jockey for a start and how the three legs are laid out with different points of sail. A dinghy race is great fun for people starting out, but I don't think they realize how easy it is.
Mike Murphy
2018-07-26 14:14:21 +0000 UTCYou have 12 batteries. Are they all 12v and each 100Ahr? If they are, doesn't this mean that you have 2 banks of 6 batteries. The six batteries are in parallel (so 6 x 100Ahr) and the two banks are in series to make 2x12v = 24v? Do you have separate batteries for engine and generator start like I have? If not, how do you prevent draining the house batteries flat and then being unable to start the engine? Boyd
Boyd GOLDIE
2018-07-26 12:27:54 +0000 UTCSuper informative video thanks for posting! :)
Ash Heilbronn
2018-07-26 09:16:47 +0000 UTCOh yes how have we not thought of this before?? Duh! Okay will put some thought into that! Thanks- Brian
Sailing SV Delos
2018-07-26 08:35:15 +0000 UTCRight on Eric, that is too cool! Just think how much sweeter it will be when you take her out knowing how much it took to bring her to life :)
Sailing SV Delos
2018-07-26 08:34:26 +0000 UTCThanks for your comment Tay, that is good to know! Wishing you the best- Brian
Sailing SV Delos
2018-07-26 08:33:03 +0000 UTCHey Johnny, we kept the navigation on because it has the best display for reading current actually! We do have another that doesn't require the system but it's a bit old and hard to see. We update it in the next video. We haven't run our AC since Asia, where it was hot, humid, and no wind. I think you'll find that to run AC you need to run your generator or be plugged into the dock. Since we like to minimize generator time and hardly ever go to a dock we haven't run it in a while. At anchor there is typically a decent amount of breeze. We cope by using wind scoops on the hatches to direct as much fresh air into the boat as possible, and also have ALOT of fans! Fans are your friend :)
Sailing SV Delos
2018-07-26 08:32:30 +0000 UTCRight on Mark, we plan on doing that when we are back on Delos! Brian
Sailing SV Delos
2018-07-26 08:28:41 +0000 UTCHey Martin, this is a great question. Actually this has a lot to do with the charge controller you use. For example our Silent Wind charge controller has a dedicated "load" output that you can set the priority for whether to charge the batteries or not given the DC load. All our other solar and wind chargers simply connect straight to the battery bank, so they are always charging the batteries. The load is then connected to the same terminals, which in effect means the power can either supply the load OR charge the batteries depending on if you have an excess or power or not. When we run the generator it's a bit different because it produces AC power, which directly supplies our outlets for AC appliances like the bread maker, still, etc. Because the generator produces 8KW of power we also have battery charges to top up the batteries while it's running. Hope that makes sense! Brian
Sailing SV Delos
2018-07-26 08:28:10 +0000 UTCDelos actually has a step up transformer, so we have two different cords. One takes 120V and the other 240V. The problem is most 120V countries are also 60HZ, while 240 is 50HZ so we can't run things like the washing machine, AC, anything with an AC motor because they will freak out trying to spin 20% faster. Hope that makes sense! Brian
Sailing SV Delos
2018-07-26 08:24:02 +0000 UTCHmmm, yes maybe something about the periodic maintenance we do could be fun. We have a haulout in Grenada so will keep this in mind as we are filming that. Fair winds! Brian
Sailing SV Delos
2018-07-26 08:22:27 +0000 UTCHey Robert, Actually I thin people would really enjoy an update on this. I will put it on the list, thanks for that! Brian
Sailing SV Delos
2018-07-26 08:21:00 +0000 UTCYes! That's what I'm talkin about, nice informative technical video. You should make some sailing videos too. For example, if you look on Youtube to find instructions on how to tack you will see someone at the tiller or wheel yell tack and then see the boom go zooming over. What would be really interesting would be to have a split view with drone coverage so that you can actually see how the boat and sails are moving from an exterior perspective. Actually, it would also be interesting to have Maggie in front of Delos, heading straight into the wind so that there is a frame of reference for how Delos is moving during the tack. It would be challenging, but the Delos crew does have a certain set of skills.
Tod Christianson
2018-07-26 04:58:02 +0000 UTCI've been a patreon for about a year and I've watched your videos for much longer. I've always wanted to sail and have some ASA certs under my belt. I inherited a powerboat recently and had to take it on as a project and remove it from someones property. Was in rough shape, getting better. I have a new respect for captain Brian, Dr FixIt. I'll keep supporting you, keep bringing the nuts and bolts videos. Much Love. You all are doing amazing things. Keep inspiring the masses!
Eric Carney
2018-07-26 02:57:04 +0000 UTCI think a lot of us with boats, especially sail boats, enjoy the technical aspects of sailing. Whether it's sailtrim, fibreglass repair, weather prediction, or marine electronics. So please keep this stuff coming! Thanks!
Tay Moss
2018-07-26 02:54:39 +0000 UTCFANTASTIC; YES! MORE,SOLAR AND WIND--HOW IT ALL WORKS--GREAT!!
michael
2018-07-26 02:38:25 +0000 UTCI really enjoy the techy video also.
Ronnie Mackey
2018-07-26 01:46:43 +0000 UTCLove how y'all can essentially live off the grid!
Ken Randall
2018-07-26 01:09:58 +0000 UTCThat was great - definitely interesting in part two - "the solar farm"
Ken Randall
2018-07-26 01:09:30 +0000 UTCThanks Brian and crew. Very educational. I enjoyed learning about the amp hours. -Mat
Matthew Matlack
2018-07-26 00:51:21 +0000 UTCI don't know which is spinning faster- My head or your wind generator......
Larry Sumner
2018-07-26 00:29:07 +0000 UTCGreat video! Keep them coming. Looking forward to the new Lithium battery install video, the charging levels and storage prep on the hard. I was wondering why you kept your navigation equipment on while taking readings from you other devices? One of the biggest questions I have is air conditioning. Living in Texas, it's essential. I'd like to get an ocean boat in a few years, but I think the only way I can get my wife to buy into it is to have comfortable temps on the boat at night. I rarely see you folks run it. How do you cope, or is it even an issue?
Johnny Harrison
2018-07-25 23:39:14 +0000 UTCGood video. Thank you for time on this! It would be great if a reference list was available to any material you used in your research.
Bart Wesp
2018-07-25 23:23:56 +0000 UTCLoved the breakdown on power usage. Maybe talk about your solar capacity and wind turbine and how it is integrated into Delos' power system.
Mark Ornstedt
2018-07-25 23:20:54 +0000 UTCThis maybe crosses over into next video, but what effect does solar and wind have on battery. If current they generate is not needed by Kazza's laptop (or whatever) does it trickle charge the batteries all the time? Same batteries or do they have their own? Does system automatically choose clean energy before going to battery... like when you run generator presumably some of that is drawn off immediately to run the still or bread maker and only then to charge batteries? Keep up videos- love way you are not just a talking head and you involve the whole crew. The girls make it all so real.
Martin Foden
2018-07-25 23:12:11 +0000 UTCReally enjoyed this - thanks for sharing. How do you deal with the difference in currents 120/240 between countries - especially for shore power?
Peter Loehr
2018-07-25 22:48:07 +0000 UTCHere is a nerdy one ;) How about a video about how you keep on top of maintenance? Rig, especially at the mast top, steering etc. If you can make THAT interesting then I'm impressed...
Gerran Tangye
2018-07-25 22:40:16 +0000 UTCGreat vid! Stay strong, Brian, never give in to the macs! No one needs a $2k aluminum shell on an old intel cpu :D
Kerrald
2018-07-25 22:27:19 +0000 UTCI was told that there wouldn't be any math.
Rob Milligan
2018-07-25 22:19:38 +0000 UTCyes please!
Gerran Tangye
2018-07-25 21:57:46 +0000 UTCAnother idea would be an update on how you are using the various instruments, I've noticed you no longer appear to have a dedicated plotter and are managing everything on tablets. The original vid you did when you installed the Maretron kit was great, maybe time for an update on how you have integrated everything, what charting software you find reliable enough to cross oceans with, what integrates with your weather routing, etc. It may be a tad too geeky for the larger channel but it would be great to get your take.
Robert Place
2018-07-25 21:56:24 +0000 UTCOh right that's an important distinction! I'm 12V so my original 200AH calc sounds more reasonable. Thanks! Looking forward to next week's video!
Dave & Stephen (SV Stella Mari)
2018-07-25 21:49:48 +0000 UTCThat would be great. As we gear up to head out the amount I have learned from the various tech vids you and some of the other channels have put out have been a huge help in getting me to better understand the vast array of systems on a cruising boat and have on more than one occasion helped me trouble shoot problems on my own boat. Keep up the great work.
Robert Place
2018-07-25 21:47:14 +0000 UTCHey Dave, keep in mind that's 130AH @ 24V, which would be 260AH @ 12V, not sure if you are going 12V or 24V... Anyway stay tuned for next week as I just finished one on installing our Lithium batteries, hope to release it next Wednesday. Fair Winds! Brian
Sailing SV Delos
2018-07-25 21:40:37 +0000 UTCNICE! Hope it helps and good luck :) Brian
Sailing SV Delos
2018-07-25 21:37:55 +0000 UTCThanks Brian!
Chris Embury and Amy Mason
2018-07-25 21:36:22 +0000 UTCGreat video and these comments are super informative too! I'm adding solar my sailboat and replacing my batteries with a bank of LiFePo4. I think I overestimated the size of my battery bank if the Delos crew only uses 130AH. Time to go recalculate before I spend all that money on the batteries!
Dave & Stephen (SV Stella Mari)
2018-07-25 21:36:08 +0000 UTCI don’t recall seeing that one!... thanks!
Greg Guthman
2018-07-25 21:13:54 +0000 UTCHey Greg, not sure if you have seen this one yet. <a href="https://www.youtube.com/watch?v=qL2prAQuiMs" rel="nofollow noopener" target="_blank">https://www.youtube.com/watch?v=qL2prAQuiMs</a> . It's a few years old and maybe due for an update but it does specifically cover how we use the Iridium and Predict Wind. Will get this on the list for an update since it has been a few years more years of use now.
Sailing SV Delos
2018-07-25 21:07:20 +0000 UTCHey Chris, will hit the solar and wind topic up when we return to Delos in just a few weeks so stay tuned. I don't have any personal experience with Pacific Seacraft, but what I have heard from others is that they are quite sea friendly boats. Looks like there is a forum at <a href="https://www.sailnet.com/forums/pacific-seacraft/" rel="nofollow noopener" target="_blank">https://www.sailnet.com/forums/pacific-seacraft/</a> that may be helpful. I know I perused the Amel owners forums when researching Amel and got lot's of good info there. Brian
Sailing SV Delos
2018-07-25 21:04:36 +0000 UTCThe huge difference in Linthicum being that you can bury them all the way down with no ill effects....
Greg Guthman
2018-07-25 21:03:14 +0000 UTCHey Richard, I have just finished the next video covering our Lithium installation! Should release next week and we will cover some of these topics. We anticipate running both the Bread Maker and even our Still off the new Lithium system and inverter! Brian
Sailing SV Delos
2018-07-25 21:00:07 +0000 UTCExcellent topics Arndt, I will put these on the list :) Brian
Sailing SV Delos
2018-07-25 20:58:43 +0000 UTCI second Greg's request. Love to learn that!
Peter Kane
2018-07-25 20:58:33 +0000 UTCI know you were attempting to keep it simple and using only at anchor sources, but what about the microwave and bread maker? Those suckers draw big! Are your batteries lead acid or AGM, and what size?
Richard Whiting
2018-07-25 20:50:53 +0000 UTCthis video is great, these topics are not discussed in driving licenses, believe only in the British Yachtmaster. For cruising sailors really worth knowing, Thanks Brian. You explain it very well. What I think would be great video over, if you plan larger crossings, arrangements, crew shifts, weather, route planning.........
Arndt Funke
2018-07-25 20:42:42 +0000 UTCHey Guys and Gals, Thanks so much for the power lesson. Would love to hear more on solar and wind generated power sources aboard a cruising vessel. We are learning and researching currently our escape plan. Really love the Pacific Seacraft Blue water vessels. Any thoughts on them Brian? Thank you for all the great videos!
Chris Embury and Amy Mason
2018-07-25 20:36:49 +0000 UTCAlthough I think you’ve done a great job within the episodes over the years, I’d love to see the same focus done here on weather routing / prediction. Your use of Predict Wind (paid version I assume), how you get data (iridium etc.) and how you put it all together to make choices and any times you were really proud of a choice and maybe a time you got it wrong and the impact there.
Greg Guthman
2018-07-25 20:23:55 +0000 UTCThanks for the comment Jason, perhaps I should do a series "Boat Bits with Brian" just about repair work and stuff. That would actually be pretty cool :) . Brian
Sailing SV Delos
2018-07-25 20:22:41 +0000 UTClove the tech stuff, you haven't been doing much recently , you used to do many more repair videos . love them, thx guys 8)
Jason Hall
2018-07-25 20:20:37 +0000 UTCHey Christos! Oh man, you know I am going to cover that in our next video which is about the Lithium battery installation. I think we will be able to run the bread machine and EVEN THE STILL off the new inverter battery combo :) . He he. Brian
Sailing SV Delos
2018-07-25 20:20:20 +0000 UTCRight on Kyle, seems that this will be a popular video. We'll do it when we return to Delos in just a few weeks so stay tuned. Brian
Sailing SV Delos
2018-07-25 20:19:34 +0000 UTCYep, gotta watch that AH Consumption :) Also a very cool and practical way to demonstrate math to a kid for sure. And to help them understand why not to leave stuff on, even at home.
Sailing SV Delos
2018-07-25 20:18:59 +0000 UTCHey Pantagiotis, this is a really great comment! It is indeed very confusing given the different ratings and voltages. I just finished the next video on our Lithium installation, so stay tuned for next Weds where I'll cover a bit more about this. Fair Winds! Brian
Sailing SV Delos
2018-07-25 20:18:02 +0000 UTCJust finished editing so stay tuned for next Wednesday's post :) . Brian
Sailing SV Delos
2018-07-25 20:16:10 +0000 UTCHey Tony, I actually just finished editing that video! Ha Ha! So it will cover our Lithium installation in great detail. Stay tuned for next Wednesday :)
Sailing SV Delos
2018-07-25 20:15:41 +0000 UTC<a href="https://www.amazon.com/Charger-MacBook-Magsafe-Style-Connector/dp/B07DJ5FYX5/ref=sr_1_2?ie=UTF8&qid=1532549660&sr=8-2&keywords=24v+MacBook+Pro" rel="nofollow noopener" target="_blank">https://www.amazon.com/Charger-MacBook-Magsafe-Style-Connector/dp/B07DJ5FYX5/ref=sr_1_2?ie=UTF8&qid=1532549660&sr=8-2&keywords=24v+MacBook+Pro</a>
Greg Guthman
2018-07-25 20:15:40 +0000 UTCCool Matthew, so happy you liked it :) . Brian
Sailing SV Delos
2018-07-25 20:14:47 +0000 UTCRight on Bejamin, glad you enjoyed the post. Was quite a bit of fun to do. We'll tackle some of the other stuff like winches, windlass, and even bow thruster when we return to Delos. That's a great suggestion so thank you!
Sailing SV Delos
2018-07-25 20:14:25 +0000 UTCYes, I know I know you are absolutely right! I should get on my DC to DC game....
Sailing SV Delos
2018-07-25 20:13:19 +0000 UTCHey Jim, yes you are correct since Power = Current x Voltage if you have a 1000W windlass, on 12V you would need approx. 83 amps, and at 24V approx. 42 amps. So by stepping up the voltage you can have the same size electric motor in the windlass (same power) and use a smaller gauge wire, since high current is what dictates the wire size required. You will find that most larger boats with large loads will have a dual system (24V and 12V) to run the smaller systems like VHF, Nav Electronics, etc. that may require 12V. I have also seen many boats built outside of the US with 12V, so I think it is more of something to do with size. Bigger electric motors = more power consumed!
Sailing SV Delos
2018-07-25 20:11:09 +0000 UTCForgot the bread making machine! :) Would be cool to know if you have circuitry to prevent discharge below 50% capacity etc. Great video, thanks!
Christos Makris
2018-07-25 20:08:48 +0000 UTCLoved it! Thanks Delos! As you mentioned in the video, a solar/wind/generator video on how you put the power into the batteries would be awesome!
Kyle Bailey
2018-07-25 19:53:41 +0000 UTCReally cool, thanks the inspiration - One of those things I always eyeball it (to my peril), it's a great project to do with my kid.
Frederick Savoye
2018-07-25 19:43:55 +0000 UTCGreg, I couldn't agree more... Was having a chat with a friend who is a boat owner and was telling me that he needs an inverter just to run his laptop and when I explained that exact same thing he was stunned. Most people don't know that unfortunately. A simple 20$ dc-dc converter can save you hundreds on inverters etc... but the truth is that the manufacturers don't make it easy... regarding the 50% might be stretching it a bit. Inverters usually run around 85-90% and power adapters about the same.. you'd save probably around 20-30% not more than that.
Panagiotis Verras
2018-07-25 19:40:08 +0000 UTCHey Brian, nice video, very informative. One thing to point out to people is that the consumption you mentioned is for a 24V, so for 12V systems you need to double it and add another 10% (losses due to higher currents). Unfortunately the AmpHour thing has caused quite the confusion for people... for example power banks or mobile phone batteries the manufacturers always mention the capacity in Ah but you have to look at the small print about what voltage does this refer to. For example when you buy a powerbank that is 10000mAh , that is on the Li-Ion voltage and not at 5V that is usually the output. for this powerbank would be 36Wh and not 50Wh. Wh (watt-hours) is a much more useful way to express capacity. also different chemistry of Lithium batteries have different voltages.. for example LiFePO4 batteries have a standing voltage of 3.2V , LiCoO2 (most laptop batteries) 3.6V, LiMn2O4 3.7V. All batteries express their capacity on mAh or Ah but might actually be different capacity. Another thing about usable capacity. Yes the smaller the discharge cycles the more you're going to get, same applies for Lithium but with more DoD (depth of discharge) available, however what matters even more is the maximum current as you go down on the discharge. If you try to take 200A out of a 200Ah battery for like 5mins when it sits around 50% you going to hurt it a lot more than trying to take 20A for an hour. Your brand new Lithium ones though are a lot more forgiving, good LiFePO4 batteries can go down to 5% at 3C (3x rated capacity) without hurting them.
Panagiotis Verras
2018-07-25 19:31:35 +0000 UTCExcellent video on power comsumption!! Now I'm anxiously waiting for the switching to Lithium Ion video.
William Gross
2018-07-25 19:27:28 +0000 UTCSuper helpful, and yes make more! Always good to hear it from people who are doing it, day in day out. Cheers
Roenyc123
2018-07-25 19:26:47 +0000 UTCI realize I may have been thinking about that backwards and with the Lithium you can discharge deeper. So you can replace the Lead Acid with smaller capacity Lithium and discharge them deeper and get the same operational time.
Tony Willett
2018-07-25 19:21:01 +0000 UTCHi Jim, most sailboats have a 12V system. It has been like this for a long time, there is more stuff available on 12V, although these days most stuff will be able work at a range of 12V-24V. Yes you are quite right that wiring could be smaller gauge as your current would be half and especially for things like furlers, winches and windlasses that can be very high power it makes a huge difference, and i guess that's why boats with such systems are 24V. it's like the automotive, cars ate 12V but many trucks are 24V. One thing that is simpler with 12V is that you don't need to get batteries in series, don't want to get in too much detail but in the older days it was a lot harder to monitor batteries in series.
Panagiotis Verras
2018-07-25 19:08:32 +0000 UTCYou mentioned Lead Acid for depth of discharge and capacity. How does that differ from Delos' new Lithium batteries (hopefully I am not incorrectly remembering a swap to Lithium )? It looks like optimal Depth of discharge is 75% for Lithium, so I am assuming when swapping you added some capacity to have similar operational duration. <edit> I went back to Instagram and verified what you installed (LiFePO4) and the optimal DoD looks to be 80% on those.</edit>
Tony Willett
2018-07-25 19:06:29 +0000 UTCYES!!! loved this video, im an engineer so learning about the different systems and how they are incorporated into boats is very interesting to me. i work in Water systems engineering but most of the basics translate pretty well. i really enjoyed this video and would love to see more like them. i love learning about how and what you do to design and operate Delos. Thanks again crew for the very informative video.
Matthew Jaroslawski
2018-07-25 19:04:33 +0000 UTCi think because of the size and power demands of the equipment of Delos or any Super Maramu the voltage needs to be stepped up. for comparison using water systems since im an engineer in the water industry, Voltage is like Pressure, it is the force behind the current (flow) of energy. so for example, the Amel Santorin the boat which im currently dreaming about runs on a 12V system even though it is a European boat, i think this is because its Equipment and systems are not as power intensive as the systems and equipement on a Super Maramu. hope that helps
Matthew Jaroslawski
2018-07-25 19:00:55 +0000 UTCVery helpful review! I used to sell myself as a marine electrician. Nearly 40 years ago! Basics do not change a great deal but your next two videos on Solar and Wind with Combining of multiple source charge controller will be very helpful to my planning and understanding my next vessel. Brian, nice to visit your house battery bank and see it so clean and tidy! Please show your engine starting batteries and cables. Also a section on your windlass power supply and control. Many people will benefit from knowing about powering windlass, and remote large draw sail and anchor controllers! I have seen boats burned from errors built into vessels by manufacturers! The power stored in batteries is HUGE when discharged in the wrong way or too quickly by an unplanned fuse link! Cheers and thanks for your instruction! ben aka: crusty joker
Benjamin Franklin Hamilton
2018-07-25 18:54:23 +0000 UTCGood stuff sir and spot on... I be one of those Electrical Engineer geeks... One thing I can't believe you haven't picked up on yet though!... It is horribly inefficient to charge any DC device (e.g. Laptop) from an inverter. You are taking your DC, Inverting it to AC and putting it through the power supply which takes the AC and turns it back in to... you guessed it, DC!. There are many after-market DC MacBook-Pro chargers out there for 12 & 24v. There are so many different PC power connections, so it might require a little more hunting. This will cut your computer draw by almost 50%.
Greg Guthman
2018-07-25 18:48:51 +0000 UTCSo Brian, it seems like you get more from 24v vs 12v (and the wires can be smaller size I think I read somewhere). So do you know why US boats use 12v?
Jim Lyon
2018-07-25 18:46:49 +0000 UTCAlso, Congrats that all of your higher tier patron rewards are full! That speaks volumes about your videos, your adventures, and the bad-ass Delos Tribe!
Tim Kennedy
2018-07-25 18:41:17 +0000 UTCThanks for the bonus video! Very informative!
AlanR
2018-07-25 18:40:05 +0000 UTCI love this type of video!!! 1. bonus/surprise video 2. provides a better understanding life behind the camera 3. more Delos is ALWAYS better
Tim Kennedy
2018-07-25 18:37:15 +0000 UTCThis is outstanding Brian. Helps the rest of us trying to size things up!
Brian in Boston
2018-07-25 18:36:21 +0000 UTCOhm my goodness, thanks for doing this! Im currently upgrading my fridge/insulation/battery banks, and wasnt sure how to calculate all this. Taking notes on this one! Thx 😁
Salty Señorita
2018-07-25 18:29:06 +0000 UTC🤟🏻🤙🏻
Robert Giroux and Cindy Xu
2018-07-25 18:27:14 +0000 UTCIt’s an hour to Rock Out!
Brandon DeYoung
2018-07-25 18:25:58 +0000 UTC
