Lithium Iron Phosphate (LiFePO4) Batteries

[GregOConnor]

A good real time test on this would be two harbor freight trickle chargers one for each 12 volt start battery plugged into a tell - a - watt for two months. Then you can calculate impact these chargers would have if tied thru the lithium powered inverter . I use the harbor freight $5.00 trickle chargers on tractors that sit and have had good luck with the auto feature but blame one of them for cooking a lead acid dry. I am not sure a cheap one or failed auto stop charge prompt can screw up agm's. F OLIVER has a good idea and that doesn't complicate the need to find a way for one charger to send two different charge cycles. Redundancy is also a good thing

one thing to keep in mind with two banks side by side is to maintain directional isolation charge only and a back up line protection fuse. I once installed a genset start battery and simply charged it with a 10 gauge wire to a 0 gauge run off of the house bank. Once when the new start battery failed to maintain a Sufficient charge the Un fused 10 ga wire got cooked as it became the path for start power. Folie idea requires no extra fuse or fear.