Can a 12-volt battery lose voltage after not starting a car for a week? You bet it can!
MIGHTY MAX BATTERY 12-Volt 22 Ah Sealed Lead Acid (SLA) Rechargeable Battery ML22-12 - The Home Depot
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Delivering power when you need it, the MIGHTY MAX ML12-12 12-Volt 12 Ah uses a state of the art, heavy-duty, calcium-alloy grid that provides
MIGHTY MAX BATTERY 12-Volt 12 Ah Sealed Lead Acid (SLA) Rechargeable Battery ML12-12F2 - The Home Depot
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Why is my only 2 weeks old battery like this? Corrosion already on left clamp. Ended up replacing this battery; new battery only holding 12.2v at rest but do 14.5v engine running.
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LFP27-12100 LiFePO4 Lithium 12V 1280Wh Deep Cycle Battery