The 100A Battery Tester and Voltage Meter tests the health of 6 or 12 volt batteries in consumer vehicles. It’s easy to use and effectively analyzes batteries in a mere 10 seconds. Using a shock-resistant meter and rust-resistant copper clamps, this automotive battery tester is ultra durable and useful for a variety of common shop tasks. Test the battery in your car, RV, or golf cart, or diagnose issues with your alternator all with one tool. And because this powerful tool comes in such a small package, it’s easy to take with you anywhere. Keep one in your vehicle’s emergency kit and one in your home shop, so you’re never without it when you need to diagnose battery issues. The OEMTOOLS 24338 battery load tester goes to work in a snap. You can use this tester for all batteries in the 6v or 12v range, and it works just as well as an alternator tester. This tool can plainly tell you your battery's health, load, and whether it's receiving a charge from your alternator. This is a simple, yet powerful tool for diagnosing common battery and charging system issues in your vehicle, a must have tool for anyone who maintains their own vehicle. OEMTOOLS is well known for offering an unbeatable combination of quality and value, so you can trust that we've built our battery tester to last.