DiamondDan wrote:
My 2008 Damon Astoria has been sitting plugged in since Oct 2019. My bad: didn’t check the water levels in the house batteries, and now it is well below the tops of the cells, and they won’t hold a charge. Can they be revived with water and a couple charge / discharge cycles, or are they toast? Batteries were installed 2015.
Thanks in advance.
Plates exposed to air sulfate and the lost capacity cannot be restored. You can try including equalizing and perhaps they will be adequate for your use, but they are also 6 years old. Or replace, maintain and enjoy.