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I connected the charger under normal option to a good battery - 12.6v on multimeter - and left it there to charge and maintain for 10 days. When I checked today, battery was hot and had no charge - 10.1v. The statistics are shown in the attached screenshot. The battery now ruined!!
Why
100AH on cycle 3, thats a pretty evil discharge amount for a lead based battery.
P.S. voltage on a lead acid battery means nothing. I have one that sits at 13.4V, but will not take a charge everever.
Mant things could have happened left unattended like that. Heat suggests shorted plates internally maybe? Or not enough electrolyte. No idea without seeing the battery.
Everything became clear!! The battery I put in my caravan was one that was already damaged and finished. It showed 13.6 on the digital meter, but obviously could not hold charge. I have now replaced with a proper good battery and will see the resilts. So far going well.
