yes; they did say that they are Grade A, with zero cycles. but I would say my expectations are 'realistic'. they might be dinged up. but as long as the capacity is 'close' I'll be happy. With zero cycles even better. Might have a bit of difficulty balancing if not quite matched but expect with typical low drain/load it will be ok. which is why I kind of went overkill about getting so many ah. way more than I need. The price was too good to try this out and see how it goes. $75/each+350 shipping. $950 for 560ah. plus I'm going from 250# of battery to a nice compact 75#. My existing FLA bank is about 425ah. (~200ah usable). I would expect at least 450ah of usable capacity.
EVE 280Ah Lifepo4
- Thread starter boboxx
- Start date
Maast
Compulsive Tinkerer
Oh you can specify that they come with holes - I just went with the slightly less expensive models intended to be welded to a bussbar like for a EV, one of the vendors I was corresponding with did say that these are the largest cells you can buy directly that are A cells, anything larger you find will almost certianly be B cells rejected from the chinese EV market.
just a quick follow up; I ordered these EVE 280ah cells on tuesday. I just got a tracking number (the vendor so far has been great to work with) and they will be here Monday! I will follow up toward the end of next week with photos of the cells and their condition for anyone interested.
boboxx
New Member
Who did you order from?
boboxx
New Member
After a few individual cycle, each cell is charging and discharging at the same rate 
What charger or method are you using to test cycle? I've ordered the capacity tester discussed on this forum but haven't picked a charging set up. options are variable DC power supply? Using a ISDT active balancer would take too long. My bank will end up in my boat which has a shorepower charger but for my home lab I'm not certain what I should pick up.After a few individual cycle, each cell is charging and discharging at the same rate
boboxx
New Member
I have a Victron IP65 and a bench top power supply. For draining I have a Kisae 2000W inverter and 1500w space heater. None of it is very fast but it's winter here and I still have a few months.
boboxx
New Member
Yes that is correct
I received my 280ah cells back in January; these are pictures of the final end product. Two 280ah batteries for our 5th wheel.
For each one they use a group 31 battery box, a daly 200a BMS and a ISDT cell monitor. Bus bars are 1" copper. they also have a 14w reptile heater fixed to the underside which I will experiment during low temperatures. 8 Cells was $950. Total cost was about $1300. or about $650 per battery. they will replace my current 300 pound FLA battery bank.
For each one they use a group 31 battery box, a daly 200a BMS and a ISDT cell monitor. Bus bars are 1" copper. they also have a 14w reptile heater fixed to the underside which I will experiment during low temperatures. 8 Cells was $950. Total cost was about $1300. or about $650 per battery. they will replace my current 300 pound FLA battery bank.
That's impressive! When you wire the cell monitor (does it do any active balancing?) Are there leads from each cell's positive to each of the BMS AND the cell monitor or can the BMS and cell monitor share the balance leads somehow? Looks amazing for group 31 footprint -- may need a bit more height to accommodate the terminals.
good morning; the cell monitor does have a passive balance function which you can activate manually. the BMS and cell monitor share the same ring terminals which I soldered together and then crimped. I did buy some active balancer's initially but didn't install them because the cells are grade A and don't need them and for the reasons Will posted that active balancing is ineffective for the most part unless you are on the knee of the voltage curve. the battery boxes have plenty of room with the top on for the terminals. not really a problem.
CerealKiller
New Member
- Joined
- Jan 28, 2020
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- 23
I think there has been a wide number of people very happy with these cells. I sure am. they are of high quality. was kind of thinking of building another one but am holding off. I think having two for the 5th wheel is plenty for now. (6kw) My two batteries I just charged up via the solar panel a week ago and they are still within 10 or 15mv of each other. the daly BMS also has a balance function built in. but I also used the balancing function in the monitor jus for grins. (something to do while the sun was shining).
CerealKiller
New Member
- Joined
- Jan 28, 2020
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- 23
That was super helpful. Glad to see you are enjoying your setup.
LukeVader
Sun Farmer
That's really amazing information. How can you read those QR codes? I have 8 of the same and trying to figure out if the serial # portion has any info like date of manufacture, grade, etc.
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