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Battery Protectors

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Performance Tool Battery Maintainers

To maintain voltage continuity to your engine computer, clock, and radio memory when your vehicle battery is disconnected, be sure that you're using battery maintainers from Performance Tool. These computer memory keepers use a 9 V battery, not included, to plug into your vehicle's cigarette lighter outlet to retain radio presets, ECM codes, and learned procedures for up to four hours. Don't disconnect your battery until you have first hooked up with these Performance Tool battery maintainers!

5.0 out of 5 stars ( 4 )

$8.99

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