Easy Instant Car Battery & Alternator Tester - Test Battery & Alternator without Opening Hood!
- Get an instant reading on your car's battery & alternator condition without opening the hood!
- Just plug into cigarette lighter outlet - LED indicator lights show battery strength
- Start vehicle and 2nd LED panel shows alternator (charging) voltage output
- Find potential issues before they disable vehicle, avoid unnecessary & expensive repairs
- No batteries or wiring needed - runs off car's electrical system; compact 4" size fits in glove box
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