Even with a built in bms you will need an Active balancer wired on all four to keep them charging and balanced evenly... They are easily wired up and not very expensive and use Bluetooth..Just re-emphasizing what was mention in the vid!
Hi Mike. It woudl be great if you did a video showing how exactly you connected/paired the initial 4* 12v batteries to those server rack batteries. You are the only TH-camr that I have ever seen done this, and i have been curious about this setup. Walking us through the EG6000 xp settings for battery comms would also be interesting given that the server rack communicate with the lithium profile, and the 12 volt has to communicate under the lead acid profile with the inverter. Those would make great content and offers something totally different from what's already out there.
Very good job, I like your setup a lot, and I appreciate you showing all the parts. Are those genuine Anderson plugs? I like the table that you put the batteries on, nice simple, sturdy design, is that in one one of your videos?
@@tedbastwock3810 They’re the Amazon version of the connectors, they seem to hold up ok so far. Yes it’s the same cart I built in one of my other videos!
Nice wheels 👍 I'm now running 6 of these now. 3 in parallel, 2 in parallel and 1 increasing 3 separate Ecoflow Delta 2 max run times. Extra 21kw is way cheaper than the Ecoflow rapist price for their extra batteries. (Although I seem to have bought 2 EFEB's too in a moment of madness 🥸 )
Living in the UK, winter = endless grey days. I have 3 EF alternator chargers and re juicing this lot overnight on 8.5p cheap rate electric. Who knew these would work so well at 800 watt reverse charge and give 800 watt into the D2 Max and DP3 🤷♂️
I have two older 25.6V batteries in series myself that I paralleled with my newer 51.2V batteries. I use a little voltage controlled relayed and resistor dump to keep them in balance. But the thing is... that's only because I already had them and the batteries would have otherwise just collected dust on a shelf. It just doesn't make a whole lot of sense when buying new to get lower-voltage batteries and put them in series. You lose redundancy, you lose single-unit scaling, you have to add the balancer. It just isn't a good plan. It is far better to scale up a 48V (51.2V) system with 48V (51.2V) batteries. Despite the deal you got on pricing, I would have just bought 50Ah Eco-Worthy 51.2V batteries, one at a time, to parallel into the system. Or another 100Ah server-rack battery. It is so much more robust that way. -Matt
@@junkerzn7312 I went back and forth on that decision between these or the 48v 50ah ones. My thought process is I can always use tha se batteries in more portable 12 volt setups. I can scale up or down depending on my needs. We will see how good they hold up I suppose
I just ordered a 6000xp and was wondering if i could use non communication batteries like the ones in this video by themselves. Was seeing in other reviews they had to run on led acid setting because of having to select a communicating battery in settings.
@@MikebuildssIs that one fuse for each battery, or one fuse for the battery bank and where is your fuse located? I’m half way through building my own cart and I chose to get the EG4 3000 watt all-in-one inverter to save money, knowing that I can add another 3000 watt inverter later, if I need 240 volts, split phase power.
In series is a no no but only because you don't get to take advantage of the larger battery capacity before the BMS shuts down the system. In parallel it doesn't matter. The larger battery will send and receive more energy than the smaller one. If the small battery drains out first, it will take energy from the larger battery. This is assuming you have some sort of controller that protects the battery. If you don't have a controller inside the battery, like lead acid, then you will likely overcharge it discharge the small batteries waiting on the big one to file charges or discharge. But nobody is really doing liph without internal BMS that can protect the battery.
@@jbuchana It’s 99% charged with solar. When we have long periods of no sun due to bad weather I do use the Chargeverter with grid power or generator power
@@rdcabalHe connected in parallel first and charge the bank to get them to the same volt. He then connected them in series to get to 48v so it can work with his system. He added a balancer to keep them equalized over time.
Not completely true. At the moment I'm getting 304ah cells(new cells testing at 315ah+), very nice battery box kits with 200amp BMS w/active balancer. Couple of hours labor to assemble. Delivered price at $1800.
Hola , hablo español solamente, compre 2 baterías de estas y quiero ponerlas en serie para trabajar a 24v , pregunto ... Tengo q cargar primero las baterías independientes?? Q configuración de voltaje llevaria a 24v ??
Looking at about twice that with around 36 400 watt panels to go off grid. Two 6000XPs and12 server racks/2 six pack carts for about 17k, ouch. Can't afford not to go this route..
Can you give me some advice, you have 4 mixed batteries, I just bought one 12v 100ah battery and I want to build a 24v battery... BUT the supplier is out of stock so I may have to buy a different brand to match it... :( You mentioned a voltage equaliser what can I do
@@Mikebuildss Oh OK thanks. I mismatch a lot of my batteries too in parallel. At one point I had 2x 12v 120ah series up for 24v. The I parallel that to a 24v 130ah. After that I parallel another 24v 100ah. It was a frankenstein system for a while but it worked perfect.
@@tehpanda64 I had the same though trust me. Server rack batteries essentially the eg4 ones do have more safety built in, but these are very safe, the lifepo4 chemistry is very safe. Just be smart on making connections and fuse everything. Plus have a plan in place
@@darnice1125 Honestly the short comings are worth it in my book, at 379 per battery it’s hard to beat, use a fuse on the output and you’ll be good. Time will tell how they hold up
Odd to be prepared...costly...25 kwh cost about 3 dollars from the grid..12 cents a kwh in my area..I have 2kw of solar and 24 2volt cells at 1000 amp hours each...
Even with a built in bms you will need an Active balancer wired on all four to keep them charging and balanced evenly... They are easily wired up and not very expensive and use Bluetooth..Just re-emphasizing what was mention in the vid!
Ive been running a single 25.6v EcoWorthy 100ah battery in my bus for over 6 months now, so far its been gutsy and faultless, great value for money!!
Agreed best deal ive been able to find!
Hi Mike. It woudl be great if you did a video showing how exactly you connected/paired the initial 4* 12v batteries to those server rack batteries.
You are the only TH-camr that I have ever seen done this, and i have been curious about this setup.
Walking us through the EG6000 xp settings for battery comms would also be interesting given that the server rack communicate with the lithium profile, and the 12 volt has to communicate under the lead acid profile with the inverter.
Those would make great content and offers something totally different from what's already out there.
I’ll have to try and make a video on that! I’d have to do a whole video to do it justice
very nice setup best of luck with it.
@@mannyfragoza9652 thanks for the comment we will see how it holds up!
I really wish I had obstruction free southern sky here in Michigan so that i can utilize solar. Thanks for all the content!
@@terryjohnson3100 Thansk for the comment, build a small array at least to mess around with!
I love your videos! Thanks for testing!
Very good job, I like your setup a lot, and I appreciate you showing all the parts. Are those genuine Anderson plugs? I like the table that you put the batteries on, nice simple, sturdy design, is that in one one of your videos?
@@tedbastwock3810 They’re the Amazon version of the connectors, they seem to hold up ok so far. Yes it’s the same cart I built in one of my other videos!
@@Mikebuildss Thanks, I will def check it out
What battery settings are you using on the inverter?
So about the overamperage protection that was recently revealed to be lacking on these..?
@@cashmir316 yes, and that’s been my finding on a bunch of cheap lifepo4 batteries. Simple solution, use a fuse on the output
Is there a reason that you place all batteries with their connection to the the left and not concentrate them in the middle?
He did say to eliminate the risk of a short. @7:54
I felt it was safer incase a tool falls on it lol plus it looks better
How to contact you Mike? The video is so good to know about how to build a 48V solar power system!
Nice wheels 👍 I'm now running 6 of these now. 3 in parallel, 2 in parallel and 1 increasing 3 separate Ecoflow Delta 2 max run times. Extra 21kw is way cheaper than the Ecoflow rapist price for their extra batteries. (Although I seem to have bought 2 EFEB's too in a moment of madness 🥸 )
Nice! Definetly best way to add capacity! Whats an efeb?
ecoflow Extra Battery 🤡
Living in the UK, winter = endless grey days. I have 3 EF alternator chargers and re juicing this lot overnight on 8.5p cheap rate electric. Who knew these would work so well at 800 watt reverse charge and give 800 watt into the D2 Max and DP3 🤷♂️
I have two older 25.6V batteries in series myself that I paralleled with my newer 51.2V batteries. I use a little voltage controlled relayed and resistor dump to keep them in balance. But the thing is... that's only because I already had them and the batteries would have otherwise just collected dust on a shelf.
It just doesn't make a whole lot of sense when buying new to get lower-voltage batteries and put them in series. You lose redundancy, you lose single-unit scaling, you have to add the balancer. It just isn't a good plan. It is far better to scale up a 48V (51.2V) system with 48V (51.2V) batteries.
Despite the deal you got on pricing, I would have just bought 50Ah Eco-Worthy 51.2V batteries, one at a time, to parallel into the system. Or another 100Ah server-rack battery. It is so much more robust that way.
-Matt
@@junkerzn7312 I went back and forth on that decision between these or the 48v 50ah ones. My thought process is I can always use tha se batteries in more portable 12 volt setups. I can scale up or down depending on my needs. We will see how good they hold up I suppose
I just ordered a 6000xp and was wondering if i could use non communication batteries like the ones in this video by themselves. Was seeing in other reviews they had to run on led acid setting because of having to select a communicating battery in settings.
Yes you can absolutely use normal non smart lifepo4 batteries with it, just gotta set it up in the settings
@Mikebuildss thank you for response. So led acid setting but just change charge rates etc.
I am looking at getting some of those batteries.
How was your ordering and shipping experience with them?
@@homesteadaquarius I bought them through eBay it was very smooth!
@Mikebuildss what shipper do they use? Ups, fed ex, usps?
Did you 3d print the mount for the monitor?
Yes!
@@Mikebuildss care to share the file?
@ I cannot share the link but go on Thingiverse, and search project box. They have a few different ones you can print
Will Prowse just reviewed these and I believe the over charge protection was too high. Might want to watch.
@@bobmakow55 Yes sir I saw that, my solution is use a fuse, mine are fused with a 250amp fuse
@@MikebuildssIs that one fuse for each battery, or one fuse for the battery bank and where is your fuse located? I’m half way through building my own cart and I chose to get the EG4 3000 watt all-in-one inverter to save money, knowing that I can add another 3000 watt inverter later, if I need 240 volts, split phase power.
Is that a metric adjustable or sae , would it not be safer to get the right size wrench ?
I was under the impression that mixing battery sizes (100ah + 280ah) is a no no. I'm really curious to know how this works out. Subscribed.
In series is a no no but only because you don't get to take advantage of the larger battery capacity before the BMS shuts down the system. In parallel it doesn't matter. The larger battery will send and receive more energy than the smaller one. If the small battery drains out first, it will take energy from the larger battery. This is assuming you have some sort of controller that protects the battery. If you don't have a controller inside the battery, like lead acid, then you will likely overcharge it discharge the small batteries waiting on the big one to file charges or discharge. But nobody is really doing liph without internal BMS that can protect the battery.
Great video! Do you ever charge the cart from the grid, or is it pure solar?
@@jbuchana It’s 99% charged with solar. When we have long periods of no sun due to bad weather I do use the Chargeverter with grid power or generator power
Great video. I’m building a new system and going to order these for sure. Do you have a link to you shunt monitor? It looks good.
How do you balance 4*12V?
@@rdcabal Connect all In parallel, charge to 14.4-14.6 volts
@Mikebuildss no, in series. Is that a special balancer?
@@rdcabalHe connected in parallel first and charge the bank to get them to the same volt. He then connected them in series to get to 48v so it can work with his system. He added a balancer to keep them equalized over time.
Not completely true. At the moment I'm getting 304ah cells(new cells testing at 315ah+), very nice battery box kits with 200amp BMS w/active balancer. Couple of hours labor to assemble. Delivered price at $1800.
Hola , hablo español solamente, compre 2 baterías de estas y quiero ponerlas en serie para trabajar a 24v , pregunto ... Tengo q cargar primero las baterías independientes?? Q configuración de voltaje llevaria a 24v ??
If you put four 12v batteries in series for a 48v, would it become one 48v battery.
How come you add 3500wh for 14000wh?
Please reply
Thanks
Because each battery is 3500 watt hours. Each battery has 4 cells, each cell is 3.2 280ah. 3.2 x 280=896wh 892x16=14336
Thanks
Looking at about twice that with around 36 400 watt panels to go off grid. Two 6000XPs and12 server racks/2 six pack carts for about 17k, ouch. Can't afford not to go this route..
That's a seriously impressive system, Yes these are definetly best for valve, i hope to get at least 10 year service life
Can you give me some advice, you have 4 mixed batteries, I just bought one 12v 100ah battery and I want to build a 24v battery... BUT the supplier is out of stock so I may have to buy a different brand to match it... :(
You mentioned a voltage equaliser what can I do
Only thing i would add to your aet up is the use of cement boards for fire proofing around the batteries
Hahaha there's no fire proofing all that stored energy.
@thefpvlife7785 trust... some cement board around it will contain the fire more Vs just leaving it that
I thought you said you were going to parallel them to make them all the same 14.6 volts before putting it in series…
He did, he mentioned that he'd finished top balancing the batteries but I'm guessing he didn't film that.
@@Absfor30 Things that make you go Hmmmmm.
So did you parallel the 48v 280ah to your other 2x 48v 100ah batteries ??
If you did, did you make the main + and - on one of the EG4 battery ?
Yes, they all share a busbar, then go into the inverter
@@Mikebuildss Oh OK thanks. I mismatch a lot of my batteries too in parallel. At one point I had 2x 12v 120ah series up for 24v. The I parallel that to a 24v 130ah. After that I parallel another 24v 100ah. It was a frankenstein system for a while but it worked perfect.
Nice I was interested in these batteries, they are so much cheaper than a server rack battery but I am slightly worried about safety.
@@tehpanda64 I had the same though trust me. Server rack batteries essentially the eg4 ones do have more safety built in, but these are very safe, the lifepo4 chemistry is very safe. Just be smart on making connections and fuse everything. Plus have a plan in place
Another youtuber showed yesterday that the internal build was excellent, but the BMS will allow 800amps..... way too much
@@Mikebuildssyou can always just throw the 4 you disconnected on the top of the eg4 duo lol
@ Correct but use a fuse on the output and you will be fine!
@kodibox-hv2ee manufacturer communicated they are going to change that down to a normal and safer amount
You better watch DIY Solar's review of these battery's. Not good. You get what you pay for.
@@darnice1125 Honestly the short comings are worth it in my book, at 379 per battery it’s hard to beat, use a fuse on the output and you’ll be good. Time will tell how they hold up
I have 2 in service for a year now, just bought 2 more. Nothing wrong with these batts. I'm totally off grid, batts run 24/7/365.
That’s a lot of juice!
@@alwaysandy1 I think I spilled some bleach
Odd to be prepared...costly...25 kwh cost about 3 dollars from the grid..12 cents a kwh in my area..I have 2kw of solar and 24 2volt cells at 1000 amp hours each...
Next on the News this guy's house burnt to the ground.
@@greencheeksconure I sure hope not! Always have a plan!
He doesn't live next to kim kardashian.
4 gauge cable is too small for 280 amp hour batteries.
With all due respect you obviously don't know what you're talking about
Are you married? If I wasn't, my place would look like yours with solar stuff all over the place, which is is nice.
@@goodcitizen4587 haha I am married the wife understands my hobbies!