slapshot0130
New Member
- Joined
- May 29, 2020
- Messages
- 12
Running into the issue of the "precharge failure" with the ANT BMS.
I think its due to a cell difference issue, causing the BMS to disconnect from the system. Once this occurs, the BMS will not auto-reconnect when the cells are in balance, due to the precharge failure, unless I disconnect the negative and reconnect to the system, where the inverter will charge its capacitors again. I have been trying to get the BMS to auto-balance but any setting I use, just doesn't seem to get the BMS to balance.
About a month ago this issue would occur near the top of the charging cycle so I just reduced the top voltage, but now the BMS is disconnecting when the battery is not charging and under a lite load, just powering a fridge.
Any thoughts would be helpful, currently trying to bottom balance again to see if that works.
I think its due to a cell difference issue, causing the BMS to disconnect from the system. Once this occurs, the BMS will not auto-reconnect when the cells are in balance, due to the precharge failure, unless I disconnect the negative and reconnect to the system, where the inverter will charge its capacitors again. I have been trying to get the BMS to auto-balance but any setting I use, just doesn't seem to get the BMS to balance.
About a month ago this issue would occur near the top of the charging cycle so I just reduced the top voltage, but now the BMS is disconnecting when the battery is not charging and under a lite load, just powering a fridge.
Any thoughts would be helpful, currently trying to bottom balance again to see if that works.