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This alternator/battery checker quickly checks the performance of the charging system. Determine at a glance whether a weak battery is caused by a faulty alternator or a failing battery. This battery checker is compact and easy-to-use. Helpful recommendations are provided to let you know when to recharge the battery, replace the battery, or retest the system.
Save on 12V Alternator/Battery Checker with a Harbor Freight discount code
Checkmate is a savings app with over one million users that have saved $$$ on brands like Harbor Freight.
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