Recent content by chayr

I guess I find something interesting. I check CFx like "x-speed told" since the beginning... :roll: When I check voltage through CFx, I can't find any voltage after CF0>>>CF1. After other CFx I find +/- 3.7v With ohmeter nothing for CF0. Other CFx give approximately same resist...

Hi all, sorry for long time without news but I'm very busy this few days... :) So I unplug the relay, and I pluged BMS directly after the battery with the good assembly sequence. So now I see that "x-speed" said in a last post : "charge is definitely OFF after 2s, but after 8s again ON and...

Could you tell me what is your tool & software for a DIY usb i2c ? I have an usb i2c standar key but I find this one. It is an all in one Uart i2c ... to usb. Do you think it can replace the bmsbattery tool ?

Ok I'm starting a collection of bms. :) Thanks anyway to all people help me in this thread. It was really interesting to talk with you.

I guess I do wrong assembly sequence. But how can I disconnect battery power when I park my bike ? I thought it was good to cut B+ with relay but I'm wrong :-( Do I have to get always BMS connected on battery and cut power after the bms ? So in summary what you advise me to do for my...

switch is connected on relay (2x24= 48) and it cut the B+ before BMS. Both voltmeters was connected after bms P- & B+ P+. BMS powered I short cut briefly "RSDT" & "GND" behind C7. Now the BMS where I make the reset always cut after a few second (see on video). On the second BMS I didn't do...

Yes I have make the charger at 4,05v with bms No when the bms cut after 2s it stay off with little voltage around 20v without any power. And It never restart alone. I have to disconnect and reconnect,for retry to charge. I waited more than a minute.

No, I start the bulk charge to 44V until 52,6 with some check the voltage. so at 52,6v balance V is : 4,05/4,05/4,05/4,05/4,04/4,05/4,05/4,01/4,04/4,06/4,05/4,05/4,04 BMS was always connected but I plug the charger directly to the battery wire with 4,5A. After that I plug the charger to BMS...

I'm now charging in bulk at 4,5 A I plan to stop before the end & try to finish the charge at 1A. I ll tell what happen...

Yes I try to reset one of my two bms. But now voltage shut down directly after 8s without charger pluged. I made a quick video of that trouble : https://www.youtube.com/watch?v=QP9LlXImvqM&feature=youtube_gdata_player

I moved the vr1 screw for 5turns until the charge start. But charging current is very low I mesured only 1A. When I try to put more current, bms cutoff :-( So I m going to charge my 15A battery in 15 hours ?

Here is the charger where we can see vr1 vr3 in the midle & vr2 at left upside fuse. So I have just to turn vr1 screw ? Hope that will work. I ll try & tell you what happen.

Good news ! I succeed to charge my battery ! I run my bike until bms go off (UV) battery voltage go to 44,2V. I can't go lowest because 1 cell go wrong... I could have, should have been disconnected the bms but I'd rather not take the risk to kill a cell. Here is the cell volatge (+ to -)...

I couldn't do the test today, I will do it in the week & tell you the result asap !!!

I understand better what you mean, I just logged in "bmsbat" and they compltely change their website. I just find that about my last order. Smart BMS 5~13 Cells in Series - Discharge Current : 20-40A 2 $24.99 $49.98 Alloy Shell 240W LiFePo4/Li-Ion/Lead Acid Battery EBike Charger - AC...