Test batteries, starting and charging systems with OTC 3200 and your smart device. Test the battery, starting and charging systems in three minutes or less with the OTC 3200 Battery Tester. This compact battery tester is the first to utilize the power of your smart device and has the ability to print, save or email a comprehensive report to your customer. A supplied, internal 9V battery tests deeply discharged batteries, leading to a quicker diagnosis and maximum productivity. It can test 6V, 8V and 12V Lead Acid and AGM batteries.