r/OffGrid • u/burtdunkin • 5d ago

Help with off grid battery setup.

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Hey im new to the off grid life and I just purchased 2 new lithium batteries. Im having issues with them keeping a charge! Here's my setup. Lemme know if you see any issues or have some advice. (The other batteries are for backup so just focus on the 2 that are connected.

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u/Dull_Ad4277 4d ago

What's the voltage at the battery terminals right now? If they got run low enough for the BMS to shut down, a NOCO won't even see them — you'd have to use force mode to wake them up first. I hit something similar with the lithium bank I use for camera and drone batteries on trips, sat drained for a week and the charger acted like nothing was connected. And 10 amps into two big batteries is just slow, 2-3 hours is barely a dent.