Hi everyone,
I just received a batch of 280Ah cells
The seller assures me that these are grade A, tested at 306Ah, EVE LF280K new version, but...
Here's what I discovered!
Your opinion ?
You right Burgerking (y), i need to share more information, i created a new thread here with more details :)
https://diysolarforum.com/threads/jk-bms-b2a8s20p-worked-for-a-moment-and-not-anymore.45102/
i checked all of that with voltmeter, here all is ok
Make sure that B- is higher than P- by +5V (use a low current power supply).
-> yes, i disconnected the push button and i tried with my power sypply +5V even +9V (with 2A and 5A), still nothing
ok then
Cell A : 210Ah
Cell B : 198 Ah
Cell C : 201 Ah
Cell D : 205 AH
so, the real capacity of the final battery (4S) will be 198 Ah, right ?
Ah yes, i can deal with that (y)
Hello guys,
in the last batch of EVE230Ah cells, i have a problem with one cells.
As always, i started a top balancing (PowerPaulAustralia method, charge with the BMS to 3,6V with the 5A active balancer)
Before the top balance the cell was perfect, same as the other cells, and after the charging...
Hi, i received my SEPLOS MASON DIY unit 592usd + 267usd DPD shipping to France (Total = 859usd)
The parcel was not correctly protected, and here how it comes !!!
Some of you guys ever had this problem ? How you solved it ?
Thanks for your help
Jerry propose a discount for a next order, but...
i want to share something with you guy, maybe you can help me ?
i bought 2 JK-BMS (B2A8S20P)
at first both worked perfectly, and with no reason one stop working ! :(
here 2 videos, one with the BMS ok and the other one with the bad BMS...
Yes BMS was attached, and the voltage never gone over 3.60V
i ever top balanced many cells (i build batteries) this is the first time happen
i really don't like this :confused:
Yes good idea, but i can't sell this battery like that, the corner you show me, this is a really good idea for shipping protection, Seplos should use that !
Thanks Steve
i really like JK-BMS but you right sometimes the quality control is not ok
i will try another one, to be sure the problem is really this device
I admit I also had a doubt about 4N.m so I tried 6N.m and the result is exactly the same!
yes the screws are hot too
wires are 7AWG x 2 (double wire each time)
I want to share something with you guy, maybe you can help me ?
i bought 2 JK-BMS (B2A8S20P)
at first both worked perfectly, and with no reason one stop working ! :(
I have 4cells (in serie) each cell is 3,335V
the voltage between this 4S string is 13,34V
voltage between + 4cells and B- (BMS)...
Hi guys, I need your opinion please
I am testing a 12V230Ah battery with a JK-BMS (B2A8S20P).
I discharge with a total current of 169A (125A through a victron Phoenix inverter + 45A through a DCDC to another battery)
The MOSFET temperature reaches 86.3°C (187.34°F) I find it high, knowing that...
Hi,
I received this week a new batch of 20 EVE Lf280k cells from Qishou,
- 4 cells have terminals with corrosion and :oops:
- 5 cells have weird safety winds. :rolleyes:
I would like to have your opinion on these 2 problems please ?
on the photos bellow, i show you "normal" teminal and the 4...