Took this to test my daughter's new car. It was so easy to use, I can't believe I just found out about this! I have a large 2" x 1" battery tester and have to drive the car into the garage to test it. This thing fits right in my door pocket and I pop it in, plug it into my phone and run diagnostics! I was able to check battery status, state of charge, charging system (alternator) status and cold start amp! My battery tester at home can't do all that and is 100 times bigger and heavier! SMH! I love this little device, it's so easy to use I can't screw it up! It's nice to know that you have such a powerful tool in your pocket when you need it. Fits right in my pocket!
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