12-Volt Battery Monitor
[PKCOAP]

This battery tester is a great piece of equipment to have around. As soon as it came in the mail I tested all of our vehicles. The family driver said bad alternator. I took the car to NAPA ( I didn't tell them about my tester) and they confirmed the alternator was about to go out. This product probably save my wife and kids from being stranded with a broke down car. I love it!