On 2023-09-01 17:35, Floyd Thursby via Mercedes wrote:
I bought a couple of those battery minders, one is hooked up to what
seemed to be a dead/dying MB battery, it is still charging after 3-4
days with no error light so maybe it will rejuvenate it a bit.
I put mine on my newest not-in-service flooded cell battery, a 2014
Interstate Megatron.
Charged it fully, made sure the plates were flooded, and let the Minder
do its thing.
It started out, a few months after its last recharge, at 10.6V.
After a couple of days a cell or two started getting warm. After a week,
I unhooked it and the voltage plummeted to below the original 10.6.
Somehow, the minder seems to have enhanced a slightly shorted cell or
two to make them more strongly shorted.
OTOH, after a week on the minder, my second newest spare battery (a 2007
Walmart Everstart) is doing quite well, I've been using it to jump start
a lawn tractor and wouldn't hesitate to stick it in a car.
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