Hailong battery external fuse?

[atheo]

I have a new 48v 17.5amh hailong battery with Panasonic GA cells.What rating external fuse should be fitted to protect the internal bms.
I ask because the bms has evidently given up,according to Jimmy at Insat and will have to go back for investigation.
The battery powers a 500w bpm rear hub motor.
TIA..Atheo..

 

[wheeliepete]

.What rating external fuse should be fitted to protect the internal bms.

What controller are you using? Fuse rating and bms need to be rated to the max. current you are demanding from the battery.

 

[vfr400]

The whole idea of the BMS is to protect the battery from over-current. It is the fuse, so you shouldn't need a separate one. In many of the batteries that use standard cases like that, the fuse isn't even connected.