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It's midday. The day after the stress test. The charge controller is in float. The symptom that starts an investigation. The batteries are pushing back every time the controller tries to push current to them. After a night of deep discharge, these batteries should be consuming every watt the solar can deliver. Instead they're refusing the charge. The last article ended with a diagnosis: sulfation. This article is about the recovery. THE HISTORY This shouldn't be happening to

I wake up. The first Sunbloc stress test was just completed the night before. Other than the voltage being uncharacteristically low the batteries operated without failure. A low SoC event but completely recoverable. I check the controller. It's in float. That shouldn't be happening at all. Even worse it's only midday. The batteries should be swallowing up all the energy possible after a night of deep discharge. Their was more to the state of the batteries. One stress test sho