Performance Tool 12V Cigarette Lighter Battery Alternator Tester
Easy to use battery / alternator tester.
Plug in to the 12V cigarette lighter in your car, the LED indicators will show you the status of your battery and alternator.
3 LED indicators to show the battery condition: weak, normal or strong.
3 LED indicators to check the status of the alternator voltage: low, normal or high.
Works on any 12 volt system, compact design for easy storage.
Compact size, a handy item for your glove box so you know right away if the problem you have is related to the battery or alternator.