hi guys i have problem with my battery, i probably accidentally set a wrong setting thrue vesc tool setting. i have 12s4p battery now on low voltage which is 14.8v , 1.3v per pack, the problem is i set my battery to 12 cells on voltage without pressing apply button on vesc tool. my setup is
flipsky dual fsesc 6.6
12s4p sony vtc6
flipsky 190kv 6374 motor
and trampa hollipro hs11
bluetooth module from flipsky.
smart switch
and bms
is it possible to save my battery from 1.3v per cells /pack ?
what’s the risk?
can i just charge using normal 50.4v 12s 4a charger?(still on shipping)
1.Yes you can. However you have caused some damage to your battery.
2.No risk as long as you monitor the voltages as it is charging.
3. Probably not. You can do it with a hobby charger set to Nimh or Once and charge each p group through the balance leads. Use a low current per p group (1A would be ok) until it reaches 3.1-3.2V. Once all the p groups are at this voltage continue with your normal charger.
that’s really convincing, gotta try that out, because i not even ride it even once before. just bench test and there my battery goes. but how it possible to drop that much just from bench test , 2 days figureit out using vesc tool.
My friends also suggest me to charge it first using normal charger. Since I don’t have the charger now gonna have to wait for shipping. Hopefully bms would help and can be charged.
It can be done, it’s just that reviving a battery (depending on it’s composition) can sometimes be dangerous
Also it should be said that when cells are revived, sometimes they lose… Capacity (? Not sure how to explain it, but just know that your range might take a hit.)
Additionally, internal resistance may increase.
Alot of forums talk about how panasonic, sanyo and some Samsung cells can be revived with ease, just proceed with caution!
alright, just make sure that if your charger is rated for any more than 2 amps that youre checking the temperature of the cells/ the pack occasionally.
The same thing happened to my space cell, as and I was trying to recharge it with its original (2a) charger, the pack became VERY hot.
It took a ride to the disposal center later that day
i dont have the charger right now. because i just order this week probably next week i can get it. the one i order is 50.4v 4a , or i need to find exactly 1a to play safe?
Read pack voltage directly from battery, if it’s really 15v, batteries are dead.
That makes each P group 1.2v, way below the 2.5v threshhold. It means you’ve altered the internal resistance of every cell in your pack that can lead to all kinds of issues, premature heating is for sure one of them.
To make sure, measure each P group voltage. Stick voltmeter positive to pack positive, then read each balance lead voltage. Write it down and when complete, take voltage difference in each subsequent P number, that’ll give u each P group voltage.
Kind of silly to not have set the cutoff correctly, not sure where u learned to program your controller but now it’s going to cost you.