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charging a 12V battery that is down to 7.5V
#1
I rescued an old Yuasa 45AH 325A ?aircraft battery from inlaws' house.
I've tried to put it onto a Lidl smartcharger but it won't even start on its ramping cheeses display. 
What would you advise? 7.5V reading, but its one of those ones with no fill possible.
I have a standard car battery charger too. The battery says do not exceed 4.2A charge or 10 hours charge, but I'd have thought that something tiny would be much better?
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charging a 12V battery that is down to 7.5V - by JonE - 01-06-2022, 11:06 AM

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