Hi,
Been away for awhile getting back into this project. Please forgive me if this is a dumb question I did search...
I built an 84V 20S12P pack from Samsung 25R cells. Added BMS. I charged the pack last year during maiden voyage and had a mechanical problem so I put the bike in barn.
When I got bike out today after 9 months, the pack was reading 65V. Put in on charger (2x Meanwell HLG-240H-42, trimmed to 84V) and charging seemed to have stopped at 77.4V, in fact the voltage is drifting slightly measured with my HP multimeter, hooked up continuously during the charging process.
I'm not sure if BMS has kicked in and it's balancing or not, I've never used BMS so I don't know if this is normal.
I unplugged charger leads and read 84.04V with my Fluke so I'm fairly certain the charger is at 84V with no load.
Been away for awhile getting back into this project. Please forgive me if this is a dumb question I did search...
I built an 84V 20S12P pack from Samsung 25R cells. Added BMS. I charged the pack last year during maiden voyage and had a mechanical problem so I put the bike in barn.
When I got bike out today after 9 months, the pack was reading 65V. Put in on charger (2x Meanwell HLG-240H-42, trimmed to 84V) and charging seemed to have stopped at 77.4V, in fact the voltage is drifting slightly measured with my HP multimeter, hooked up continuously during the charging process.
I'm not sure if BMS has kicked in and it's balancing or not, I've never used BMS so I don't know if this is normal.
I unplugged charger leads and read 84.04V with my Fluke so I'm fairly certain the charger is at 84V with no load.