Battery Bank Options + Wiring Solar Batteries from 6v to 12v vs 24v
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- Опубликовано: 22 ноя 2017
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Today, I will be discussing the three main battery bank options you have when it comes to solar batteries: flooded lead acid, absorbed glass mat (AGM), and lithium ion. I will also be sharing how to wire these 6v and 12v batteries in series and parallel to make a 12v or 24v solar system.
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Disclaimer → None of the diagrams or added images are my own... they are simply being used to illustrate these concepts and ideas.
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Hi! We are Michael + Jenny Justus. We post videos on our life of alternative + sustainable + healthy living. Our desire to live a more meaningful life led us to concoct a crazy plan: Downsize our belongings, ditch the "9-5," and move full-time into a solar-powered, self-sustainable tiny home on wheels with our two dogs, Chase + Roni. Taking this leap into the unknown has completely transformed our future, so be sure to hit that SUBSCRIBE button, join the Justus League, and follow along to see where the journey take us!
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Hope you guys enjoyed the video 😊 Be sure to share this info with anyone you know who is interested in solar power. It really helps us out. Thanks for watching and I'll see you in the comments!
not aiming to step on your toes but 9:03 12 volt set up your outputs need to be off set for a balanced drain and charge so that one battery is not taking all the drain or charge first. Path of least resistance always stands with batteries. The way it is set up in the video one battery is always playing catch up and the one that is the first out is the first to fail. Good effort on the breakdown and explanation. Have a good day
Duet Justus what about these 12v batteries that have 75a. .....they are like $30. Would these work for a small system
Something for you to consider for your next comparison is lead carbon batteries. The negative plates are treated with carbon to reduce degradation . They have similar performance to LiFePo4 , 3000 - 5000 cycles at 70% DOD , they are designed for Partial state of charge operation (PSOC) are a lot less expensive and are safe. Yes they are heavier. The other point I would like to raise is ,With the way technology is advancing, Is it worth going for something that will last 20 years, when it could be out of date in 10 years.
Not certain about the points made but ,if anyone else wants to uncover homemade solar energy try Magonsi Solar System Expert (just google it ) ? Ive heard some great things about it and my co-worker got amazing results with it.
In 2-3 years the solid state batteries will make all of these obsolete.
Thank you. Confirmed my purchase. Also learned I have less usable energy than I thought, but the longevity of my first purchase of 6 Volt lead acid did last a satisfactory 8 years.
The best breakdown anywhere thanks a million
Thanks Vincent, You are very welcome! 🙂
Wow, I just watched the first of your "lessons" here on RUclips" and I am impressed! As a new subscriber, I will be watching quite a few of them in the immediate future. Thank you so much for your time, knowledge, and the personal industry it took to produce them!
The best video for connecting batteries together I have ever seen. I clearly understood how to connect my three 12 volt lead acid batteries to maintain a 12 volt system to run my 12 volt to ac converter and to connect my 12 volt 100 watt solar panels to charge these batteries. I got the batteries for free from my son-in-laws business and had the wires built 9" long to connect them all together in parallel from a website on amazon and everything works great. I have 300 ah at 3600 wh and divide that in half or 50% of usage of the batteries gives my 1600 wh of usable energy. I was just given another 12 volt battery to connect to it so I am glad I order 4 set of negative and positive cables. I'll then have 400ah at 4800wh divide by half and I have a 2200 wh of usable energy. Its running great.
Thanks for the video, I am learning a great deal from your Solar series.....much appreciated. Keep up the great RUclips content. Your channel is among my top 3 favorites!
Wow Robert! Thank you 😊 We are so happy the videos bring that much value to you. We definitely work hard to produce them and we appreciate the nice feedback 👍🏼
i love this video
the sort of content that i download on my computer to watch again
thank's for the effort ,
Thank you *very much* for the comprehensive yet straightforward explanation of the advantages and disadvantages between the 3 main battery types, costs, and performance capabilities! You conveyed the information virtually as straight and simple as I’ve seen- and I’ve watched MANY videos on this topic only left feeling more lost, dazed and confused most of the time. But I obtained a much finer and more accurate understanding of the energy storage solution I will likely use (3rd one) and precisely how to configure/combine them safely and properly- especially for higher Amp-hours, minimal maintenance and years of sustained performance and Energy output over the years which I absolutely need.
I am currently actively planning out my home solar power system now, scoping out the best components I can find (a real toss up sometimes) and literally can’t wait to become more energy independent all-around!!
The only other thing I would have really appreciated was if you also included salt-water batteries in your comparisons and explanation...
Bravo and well done! Thanks again for taking the time. Subscribed! 👏👍👌
One of the better videos on this subject , but you could have bumped it up a little with the + , - of charging of each and the issue's of charging in parallel / series .
Thanks
That was the most understandable battery compare/config I’ve seen! Yay. So I now know I’ll get the lithium as I may eventually use them for solar in a house. Thanks!
Depends on how long you'll actually use them. Old timers like me may not love 5-10 longer. Or, somebody may trade off their rig in 3 yrs for whatever reason. Be sure to figure in longevity in your thought processing... hahaha
I’ve been running most of our home off grid for around 4+ year now and my lead acid batteries are doing just great. Yes I agree you have to maintain them regularly but if done correctly they will last years. Just waiting for these batteries to give up before considering changing over to lithium batteries,that being said it all depends on the price.👍
Lithium catches fire and can blow up
That was the simplest explanation of this. Thank you so much!!! Love you two!!!!
Great Educator! I can't wait to see more videos. He talks at a cadence that makes him easy to understand.
Thank you so much for putting in the time and effort to put these videos together! A huge help and very easy to understand! Tank you!
Excellent video. Thank you. I appreciate the information. Stay well & keep having fun.
God bless you for explaining all of this so calmly and slowly and clearly. Because of you, I finally understand how to wire a battery bank. Thanks again.
Great diagrams much appreciated. Have been chewing on an upgrade for our trailer for longer dry camp times with litheom ion batteries. We where not sure on the solar for the moment since our preferred camp sites are heavily wooded and light limited. But the 80% useage helps camp stay and also we can run generators for some recharge as needed. This video is helpful as we work toward this goal. Thank you.
His depth of discharge info is wrong, the AH ratings take that into account already. For an RV, unless you are getting really into it lead acid is the easy choice as it pairs up well to be charged from the tow vehicle.
Do you get much wind??
Best video on this topic so far, very clear and informative.
I really like the consistent use of simple matrix for comparison in your video. Easy to absorb and remember. Great work
Thanks it's nice am learning a lot from your videos I have been following them all
I love the way you explain man! Just what I need 👌🏽 Thanks
Thank you, finally, nice and to the point with illustrations. Again thank you very much
Well done, sir. A ton of research went into that, I'm sure. Thanks!
+Steve K Thanks Steve! Yes there was. Thanks for noticing 😊
Ml
best explanation for battery bank i have yet, keep on, Thanks from puerto rico
Your content is awesome thank you! Always wanted to get into Solar.
Awesome video's. Thank You very much. You really explained the info very well. I learn something new with each video,and I hope to have my DIY solar system up in the few months. Thanks again.
Great information, thank you for sharing your videos, you are also a great teacher, keep up the good work Sir.
Thanks Rene!
Awesome information😃 I really appreciate the way you relay this information. I'm about to start my 1st job in the solar field. A bit nervous. So your channel is awesome dude, cause it helps...
Awesome! You will do great. So glad the videos help. Thanks for tuning in 🙏🏼
U r an amazing tutor..making things so easy to learn
Perfect. What a clean and excellent explanation.
Thank you again. This information was really clear and helpful.
Great presentation of a challenging topic! However as they say, the devil is in the details. As a part time RV'r my needs and long term prospects are different than a full timer. For example, your cost per AH implies premium batteries which can handle some extra abuse. As a part timer, I'm very satisfied with 2nd Tier AGMs such as the Universal that can be had for as little as $1.75 per AH. Also AGM batteries (and Li-Ion) do not need venting, and for cold weather are best placed inside the camper. A security issue for many small rigs with outdoor battery storage. My batteries only cycle about 100 times a year, and I plan on keeping the camper only about 6 years. So Li-Ion will never really pay for itself as I'll beat my rig to death on bumpy Interstates before it gets retired. Also in 10 Years some new battery tech will come down the pike and my $5 per AH Li-Ion battery investment will become "Old news". Lastly is the issue of the inefficiency of the 24 - 12 conversion losses needed to power all the 12 V appliances, lighting, and chargers an RV would have. That can offset some of the efficiency gains of of the lower line loss of 24V systems. Thanks again for a great presentation and channel!
Such great info all the way around. Thank you for taking the time to add all of this 😎
Excellent.
Explanation and comparison
Thank you for simplifying this for me🙏🏼
Your video had awesome content and presented in an excellent, professional manner. Kudos!
SUPERB!!! You are a talented teacher!
Very effective and beautifully explained video.... thanks a lot man ❤️❤️
GREAT!! Well explained should be easy understood by everybody!! WELL DONE 👍🏻👍🏻
Best informational video answered all my questions.
Tellement clair et concis, merci pour tout!
One of the clearest, most complete videos I've seen on this subject.
Thanks for the clear explanation barely getting into solar to transition into off grid living soon thanks
Woww! At last! Excellent explanation you won a new suscriber!! Cheers!
Thanks as an electronics person i still learnt something new today about lithium batteries.
Nice, understandable video.
I can readily find 2-3 year old used UPS 12 volt AGM batteries at 100-125 AH on craigslist for $65 -75 each.
I have some AGM batteries that are still working that I bought used. Manufactured 14 years ago, with occasional use in a remote TX cabin.
I'd like to change to Lithium... but too pricey.
Good research, comparisons and info
A couple of things to consider with lithium ion batteries. If you *do* end up over charging or discharging them they'll probably be toast. And if they catch on fire, have fun putting the fire out! Lead acid batteries might be old tech, but they are far more robust. They can handle more abuse and are probably the better choice for someone beginning with solar power.
I really do like my lead acids. It’s definitely a trade off and if I were to install again, I would definitely need to weigh all the options. Thanks for taking the time to share this info 👍🏼
Cheers for replying. There's a couple of other interesting battery technologies out there too. Nickel-Iron (Edison) batteries & Salt Water Cells. And of course some people run industrial size NiCd cells too.
the FIRE problem is practically non existent with LiFePo4 batteries, people must make a study on the differences in Lithium batteries, the mostly in small batteries used chemical is LiOn (18650) and YES they are a bit dangerous, the LARGE prismatic cells in LiFePo4 chemistry are in fact very hard to ignite, so check out the BIG difference between these.....
Agree, LiFePo4 batteries are far more stable and safer. But at the expense of reduced capacity. But practically all those involved in making DIY power walls and the like are predominately using Li-ion chemistry cells recovered from old laptop batteries etc. It's triple jeopardy really; using unstable cells, second hand with different lifespans left in them, some people not really knowing what they are doing. Did you see that video on the VW combi going up in smoke when a pack of Li-ion cells was left charging?
Lithium ion batteries are more safer, its very hard to ignite them due to the fact that the constituent cell is made up of small finger-like batteries that are also inside a metal exterior. On the other hand, lead acid batteries release hydrogen gas when charging and sulphate at the terminals over time.
Wow, this is great! Thank you thank you!
Not an electric person but I like how you taught it, nice job
Thank you for the video. Just curious, at present we have an RV with two 6 volt golf cart batteries in a vented housing. The batteries are now about 2 years old and the AC DC converter has done well to keep them charged at least I hope? If we decided to go with an Iron phosphate Lithium 2 12volt battery system do you think the converter controller needs to be updated also? Thank you again for your great video,
A very lucid and educating presentation.
Extremely helpful, thank you.
Great presentation. A couple of questions. What determines which configuration you choose? What's the advantage/disadvantage of a series config vs parallel config? Why would I choose one over the other?
Very well put forward with the difference of useable storage to cost.
Thanks for this informative video!
Great video, very informative!
Nice informative video for to take decision of usage of battery in different usage
Extremely helpful!!! Thanks!
Thank you. It was very informative. I learn something new today.
Thank you! You made this very understandable.
Thanks for info ,loved it. Bless you
Very informative and useful.... easy to understand.Tanks
Excellent information!
Very very helpful. Thanks a lot Duet.
Great video, thanks very much! I wonder if you could comment on how large scale lithium batteries like these compare to the smaller types we find in laptops, mobiles and models? My main concern is that these batteries generally only last a couple of years before becoming unstable. There's also the safety issue with them sometimes exploding. Thoughts? Great channel!
Besides the four categories considered here I also would add weight as a significant advantage of the lithium ion option over the lead batteries.
Very helpful and easy to comprehend. Thanks
you sir are a PRO!!!
Thanks for taking the time to make this video, great comparaison, with time Lithium will be the answer when the price comes down, Please everyone else be kind and polite in your comments or opinion, Adding infos or corrections can be done nicely with support instead of playing the game I'm better then you,
Again Thank you.
Tysm for these 😭😭 I have no idea about the electrical of any of this
Nice work bro keep up the great work
Great summary... thanks!
Thank you so much your vlog is very informative.. i will be using the 4 6v batteries and will maintain them as 'ive been told lithium batteries dont really work well with all mppt solar chargers...
Thank you very much for such an informative video
I really appreciate your beautifully clear explanation putting everything in perspective. I am feeling rather stupid as I must have missed the obvious point! In my mind, if Li @ $3,000 is 5X ledAcid @ $600, & Li last only 5X longer, the cost is equal. (maintenance & replacement work aside). I imagine in 5 years there may be a superior battery to any now?
We've currently bought ourselves a previously owned motorhome, which has 3 year old lead acid 6 volt golf cart batteries. We do want to add solar (haven't seen your video's on that yet) and I am very interested in the many 'Lithium' choices available now. I do see there are many with far more than 100 AH, so the choices are many, but one does have to take cost into consideration. I truly would like to not have to worry about 'maintenance', so the Lithium would be a good choice for us I believe. I believe there are Lithium batteries that have recently come onto the market with much less chance of overheating/safety, than the old versions, so those are the one's I am most interested in of course. We do have a residential fridge, so the daily longer use of the generator is one of the reasons as well, to go to a better setup! I'll try and find your 'solar' video when time allows, and any others pertaining to this issue. Thanks for taking the time to make this video, it was appreciated!
Very useful information.
Thank you very much.
Best explanation on battery costs configurations
Thanks! Very Good!
Well done! You definitely should have been a Grade 8 Science teacher😊 Thank you!
Thank you Duet!
I found this super helpful. I am converting a school bus into an off grid tiny home. For me, the Lead Acid batteries just make more sense. Yes, you have to maintain them, yes they don't last as long as what they claim lithium ion batteries last, but I don't plan on keeping the school bus for 20+ years so I wouldn't get the full value of the lithium. I honestly only plan on living in the school bus for 5 or 6 years. Also, The cost in this video is slightly outdated or not well researched for lead acid battery cost. You can find 215 Ah lead acid batteries (6v) from Sams Club for $90/each. Duracell brand which from my research, these particular batteries are rebranded Deka batteries. So I can get 8 Lead Acid batteries for the price of a single Lithium ion battery. Sure, I can only use 50% of the capacity, but its MILES cheaper. With proper maintenance, those batteries should last me the entire time I live in the school bus.
Very helpful. Thanks!!
Awesome video thank you
Great video, thanks for explaining the differences. I have a similar 4x6V 220amp/hr battery set up at my camp at it works OK. . How do the lithium iron phosphate battery's handle below freezing temperatures?
excellent very educational .Thank You
Excellent we'll explained and interesting .
amazing break down
That was awesome information...👍👍✌️✌️
Thank you for this video.
YOU ARE A GREAT SPEAKER
Thanks for that info
Great Video!
Super basically: When you take the covers off of your car battery, you will find 6 holes filled with fluid. Each of those are individual cells producing around 2.2 volts. They are internally wired in series making around 13.2 volts. (but called 12 Volts).
If you use 6V golf cart batteries, they won't do you much good unless you want to start a tractor or own an super old Volkswagen bug. They only have 3 cells per battery, so you will have to add 3 more cells. (another 6V battery). By running a cable from positive of one battery to the negative of the other, you wired them in series and you will have a large12V battery. When you read your battery it will tell you how many amp/hours it has in it. You were able to double your voltage, but you can not double the Amp/hrs, they will remain the same.
A parellel circuit requires 2 cables (obviously) Positive from one battery to Positive on the other battery, and on the other cable Negative to Negative. If you wire two 12 Volt batteries this way you do not double the voltage,(which is good) but you get twice as many usable amp/ hours. This is very common on RVs.
Keep in mind, two six volt batteries wired in parallel will have allot of amp/ hours, but still only 6 volts, which will not work on your RV or car.
old school - tell me when you had to last top up your car battery ? they don't do it now ... not since the 90's
Doug over at "The SV Seeker" channel said your channel is well worth checking out, and they are right.
Well explained
Excellent video! 👍👍
Thanks a lot for that interesting video.I appreciate that...
Great video!!
I really enjoy your videos and have been watching all of them since subscribed a bit back. Have you done research on NiFe batteries? I think that people skip over Nickel-Iron batteries a lot of times when getting started. I prefer to handle non-hazardous materials.
Thanks a lot i really appreciate your videos.