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AutoMeter 12-Volt Battery Extenders

4.0 out of 5 stars 11 Customer Reviews

These Battery Extenders from AutoMeter are designed to maximize the life of a 12V battery. They charge a battery at a 1 amp rate until it is fully charged, and then change to a 250 milliamp current to maintain a full charge. This prevents sulfation, the main reason for premature battery failure.

Results 1 - 2 of 2

Battery Charger, 12-Volt Battery Extender, 3 amps, Each

Part Number: ATM-BEX-3000

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Nov 9, 2026 if ordered today

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Estimated Ship Date: Nov 9, 2026 if ordered today

Battery Charger, 12-Volt Battery Extender, 1.50 amps, Each

Part Number: ATM-BEX-1500

2.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 10/26/2026 if shipped by air

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Estimated Ship Date: Monday 10/26/2026 if shipped by air

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