Recent content by amaurer

Hi all. I have two packs of batteries 36 V each, since I wanted to use them both in my bike I first connected both in paralel at the discharge side but then I thought it was not a good idea since one pack might be charging the other. I then disconnected the discharge and put a 2p 2t switch to...

It seems the pack is holdind voltage, even with the BMS connected. Do you think I need to change the BMS or can I go long with the one I got ?

Hello again. I charger the faulty pack as some of you adviced, for about 30 minutes and got it to 3.4 v. I disconnected it and after about 10 hours it still has 3.4 v. What is your opinion, shall I keep the pack or replace it ? As for the BMS, do you think the bluetooth one is worth it

Thanks to everyone for their feedback. I'll try to replace the 4 batteries in my pack. As for the BMS, which do you recommend ? I've seen that there are some that do "balancing" and other that don't. Of course the latter is cheaper. What if I put one of those ?

Thank you Hemo. But how would youweld the new batteries ?

Hello Hemo: First of all, thank you very much for your help. I've done what you adviced me to do and here are the results. There are 11 leads, labeled B-, B1, B2,.....B9 and B+. B- is of course black and B+ red. The rest are all white. Voltages B- TO B1 0.6 V B1 TO B2 4.2 V B2 TO B3 4.2 V All...

Hi, I'm new in this forum so please bear with me if I ask a stupid question. I have a 36 V battery pack that consists of 40 cells. The pack was working properly until from one day to the other it was completely discharged without any use. If I connect it to the charger it immediately disconects...