Cen-Tech 12V Alternator/Battery Checker

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. Compact and easy-to-use, with helpful recommendations to let you know when to recharge, replace the battery, or retest the system. Insulated clamps with 28 in. leads for extended reach, magnetic back for hands-free placement. Works with all 12V lead acid batteries.