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AGM battery charging
Typically, to recharge a deeply-discharged AGM battery, you’ll need a fully-charged battery of the same voltage, connected in parallel, NOT IN SERIES, i.e. negative to negative, positive to positive with jumper cables, then connect charger. This way the charger ‘sees’ approximately 12 volts so the safety circuit doesn’t trip it out and stop charging.
Better yet: old-fashioned charger with no fancy-@ssed safety circuit.
Darn newfangled gadgets…
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