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!
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
@@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
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
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.
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.
@@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
@@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
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
very nice setup best of luck with it.
@@mannyfragoza9652 thanks for the comment we will see how it holds up!
I love your videos! Thanks for testing!
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
What battery settings are you using on the inverter?
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!
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 ?
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.
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
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
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
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
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?
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.
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.
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
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
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.
Only thing i would add to your aet up is the use of cement boards for fire proofing around the batteries
That’s a lot of juice!
@@alwaysandy1 I think I spilled some bleach
Next on the News this guy's house burnt to the ground.
@@greencheeksconure I sure hope not! Always have a plan!
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!
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!
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