Hi everyone,
I'm making my first attempt at building a pack:
High quality, but used SamsungLI-iON 18650's arrange as4s
Input from a AC powered Supply set to 16.8VDC and 1.0A max
The Cells all tested good on anObus charger and have similar mAHr results
Cells currently holding about 3.8V each.
BMS: cf-4s30a-a
I have it wired up as per the wiring diagram and everything is good until I insert the last cell.
When un-powered, the first 3 cells total about 11.8V.
When the last cell in inserted, the TOTAL pack voltage falls toabout 11.2V
The cells are all correctly orientated.
When measured individually, the cells are all good, and Total around 15V,so I believe the problem is in the BMS.
Any suggestions woulld be appreciated, Thanks!
I'm making my first attempt at building a pack:
High quality, but used SamsungLI-iON 18650's arrange as4s
Input from a AC powered Supply set to 16.8VDC and 1.0A max
The Cells all tested good on anObus charger and have similar mAHr results
Cells currently holding about 3.8V each.
BMS: cf-4s30a-a
I have it wired up as per the wiring diagram and everything is good until I insert the last cell.
When un-powered, the first 3 cells total about 11.8V.
When the last cell in inserted, the TOTAL pack voltage falls toabout 11.2V
The cells are all correctly orientated.
When measured individually, the cells are all good, and Total around 15V,so I believe the problem is in the BMS.
Any suggestions woulld be appreciated, Thanks!