Review on 💡 48V Battery Equalizer - Voltage Balancer for Battery Banks with 4x12V, 8x12V, or More, Extending Battery Life by 1+ Year | Gel, Flood, AGM, Lithium Battery Compatible | HA02 Balancer (Battery Equalizer 48V) by Dave Hersma

UPDATE: seems to show the imbalance correctly when adding a charger to one battery versus another. It doesn't really seem to be doing the balancing work though, I left the charger on one battery overnight and the other battery was still badly discharged in the morning. Maybe I'm just bad? It's an act of belief that this will work - they should add dual color LEDs so you can watch the current. The 2 battery version has it and it works, so -1 for that. I charge myself with 12V so it only helps with discharging. I also burned 3/4 of the glass when I missed the terminal connection. Not sure why this happened. The surviving battery was the one I missed. -1 more for the lack of a pilot error fuse - so be careful (I was upside down in a tight boat)