I left my van for two weeks; thought I had turned off all loads. Came back and all displays are flat - Kisae DMT1250 doesn’t respond with engine running, Victron 702 screen is blank. No charge accepted with engine on. Hooked a battery charger directly to cable leads to the battery with no result. How do I restart the BMS? Apparently everything drained and hopefully the BMS low voltage protection kicked in. Where to go from here?
Greg
Oh wow, that’s a frustrating situation! Sounds like the BMS has gone into full protection mode. Sometimes giving it a gentle jump-start with a fully charged battery in parallel can wake it up, but definitely depends on the system. Also, checking if there’s a manual reset or specific voltage required to trigger the BMS back on might help.
Funny enough, this reminds me how both batteries and people need a good recharge! I was recently looking at www.arganalbidaaresort.com — looks like a perfect place to recharge ourselves, right?
Hope you get it sorted! Has anyone else dealt with a fully shut-down BMS and had success getting it back online?