2025 R27 main battery bank dead

[RangerRoamer]

My boats main battery bank must have fallen below 10% due to shore power not being turned on correctly. It's fixed now. Will that eventually wake up the lithium batteries or do l need to jump start. Can I jump start from the bus bar (I can't identify + - post connections) or will I have to slide the battery out. How do you do that?

Thanks

 

[HookedUp]

If you can locate the reset button on the battery, press it then recharge. If you don't locate a reset button you might take a look at this document:

How to Reset BMS on LiFePO4 Battery (5 Methods, 2026)

How to reset a LiFePO4 battery BMS in 5 steps: clear 0V/protection mode, find the reset button, unlock a locked BMS, and reset 48V rack & solar systems.

www.aspowerbattery.com

 

[JZimmer]

I had this happen one time. I used the battery switch to combine the engine battery to the house and this allowed the house to start charging. I left them combined for 30 minutes or so. I do not know if this was necessary.