I’ve got an external Schauer JAC1372H offboard charger I’ve been using on Trojan FLAs with a degree of success until here recently. This car in question typically sits for a couple of weeks between rides and it appears we’ve had a surge or brown out, as the battery meter shows 20% and the charger indicates its in the maintain mode. I moved outlets and the charger kicked on, but reverted to maintain mode in less than 5 mins. We also lost a fridge in the garage since we were there last which is why I think we’ve had a surge or something similar.
I’ve checked the cells and each one is 13.8 on the multimeter. The batteries are less than 18mo old. Water level looks good on the plates as well.
I’ve been wanting to replace the charger and go with an onboard solution, but would like to switch out with something that will also support a lithium upgrade (likely green cells) in the near future. Anyone have one they are selling?