EBike won't turn unless it is plugged into the charger

[PhillipBrown]

I was out riding and hit a pothole with which blew out my rear tire.
I fixed the flat a few days later and noticed that the bike wouldno longer turn on.
I checked the battery and it it read 49v so I hooked up the charger.
It took a full charge but would not turn on so I checked the switch and it was fine.
All conections appeared to fine as well

So I plugged the charger back in and while it was charging I was able to turn the bike on
But when I pull out the charger it shuts off and won't turn on.
The battery is charged at @ 54v

Any clues as to what I can do would be mosy appreciated

Phill

 

[E-HP]

I was out riding and hit a pothole with which blew out my rear tire.
I fixed the flat a few days later and noticed that the bike wouldno longer turn on.
I checked the battery and it it read 49v so I hooked up the charger.
It took a full charge but would not turn on so I checked the switch and it was fine.
All conections appeared to fine as well

So I plugged the charger back in and while it was charging I was able to turn the bike on
But when I pull out the charger it shuts off and won't turn on.
The battery is charged at @ 54v

Any clues as to what I can do would be mosy appreciated

Phill

How old is the battery and how often do you fully charge it? Given that the issue occurred after hitting the pothole could indicate that something physical happed to the battery pack which could involve opening the battery pack for further diagnosis, but you could do some other checks first.
It could be that the battery BMS is tripping when load is applied. This could occur if the pack is out of balance and one or more cell groups is dropping below the BMS low voltage cutoff. This could occur even if the rest of the groups are healthy and charged. If the battery BMS supports balancing, then you may be able to keep it on the charger for an extended period (in a safe charging location) to allow the BMS to slowly bring the low groups up to match the others. The charger may turn off during the charging process, but will cycle on an off while the pack balances. A pack that is far out of balance could take several hours, and sometimes days, to bring the pack back into full balance.
If this isn't the case, then you may need to open up the pack to look for physical damage.

 

[PhillipBrown]

The battery is a 13s10p and is about 5 years old but hasn't seen a lot of use
I'll check each level to see if there is an unbalance.
It could have sepatated a few cells due to that pothole.


Thanks for your assist and I'll post results

P

 

[PhillipBrown]

Here is a Photo of the damaged controler. Thanks E-HP for taking the time to assist and calling it as it is.

At the minimum it needs to be replaced. And before that I'll test the cells to see if the damage has spread.
This battery pack has always been flawless and strong and if the controler is the only issue that would be great.
If some of the cells are out of balance I could charge them up. Done that before.
I'll know more after I fully disassemble and test the cells.

Phill

 

[PhillipBrown]

Its actually a 13s10p
I've charged each of the 13 cells with my Tenergy charger and awaite a BMS from ebay
There are two cells that are @ 4.10v and the rest hoover around 4.15-6v after charging
The two outliers charged slowly and timed out so without a full disaasembly I
A new battery is beyond my means at this time so I'm patching this one up

What I can't replace is the shrinkwrap
the actual circumfrence is 16in and the length is also16in
I've looked some and enless I order a full roll I'm out of luck and will tape it up.

Thats all for now
Thanks