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Thank you all for your reply. I just did the parasitic draw and it is .35amp So for about a month 24 hours a day it drawn a LOT of amps and like you wrote, the BMS just did not add up htat really small charge. I know what I have to do now. If I have to put my rv in the garage for a long...

I recently entered my rv in the garage. He's been there for about a month. So it is not connected to the shore and for recharging with the sun ... well it obviously does not work. Yesterday I entered the rv and as I usually do, I connect to my BMS Daly to see the battery status. It is 89% and...

I will do a capacity test today. And it did get to at least 4.60 And yes the cell is quite big.

The cell is at 3.29 (or something like that). Is it still good ? this is really THE question. My seller just wrote me 'not to use it'. So is it because there are risks ? or just because it is no good. I will wait to see what experts here say about it.

I did a bad thing ! I started to top balance my cells for a second battery BUT I adjust my power supply to 4.60 instead of 3.60. Now the first cell is not reusable (I think) so I ordered a new cell from my Alibaba seller BUT she is out of 150ah. My question, can I put a different cell...

Yes when I saw that I made an error of voltage I put them in series and applied a load (the voltage was more then 15volts). After 5 or 6 minutes of load, the voltage was under 13.5 volts. So I figured that the expansion of the cell was stopped. I removed the charge and let it sit in series for...

I received 4 new cells of 150ah LiFePO4, and like i did with my other pack I charged the whole thing close to 14 volts. Then I top balanced each cell. But I did a stupid thing, I put my charger at 4.60 instead of 3.60 volts. When I saw my mistake the cell was beginning to 'inflate' so I stopped...

I bought the LiFePO4 280ah battery from one seller on Alibaba and with that I bought a 120amps 4S Daly BMS. These are installed in my RV and I used to have lead battery (4- 6 volts X235amps) and I was able to use my microwave. Now with the 120 amps BMS...the BMS cut off the battery...silly...

Thanks !!!

I also have a question about 'adding a second' battery. I already have a 280ah with a 4S BMS. I bought a 150ah with another 4S BMS. I did not really think about some possibles problems !!! I tought that each BMS would do their job. So is there in your opinion some problems if these...

Can you post a picture of the 'key' ... I am having a problem with my BMS. From the + of the battery and the blue wire of the BMS I have 14.5 volts. But between the + of the battery and the black wire of the BMS I only have 10.8 volts. Looks like the BMS is holding some voltage :) That is a new...

I am reading a lot to get all the information I need to prepare the heating box for my batteries. So thanks for sharingyour knowledge. From what I am reading, the almost perfect watts per inch would be around .6w/inch ! Does it seams right to you ?

I am modifying my RV battery to use LiFePO4. For now I am waiting from alibaba on 4 3.2volts 280ah battery and a BMS 4S 150a. My questions: - next year I will add 4 more battery to my system and want to keep it 12vdc. So I have found here on the forum that I can use the same BMS 4S with 8...