Schumacher Battery Testers provide the capability of monitoring your car’s power system. Have peace of mind, knowing that with ease, you’re able to operate test loads, inspect battery conditions, check starter-motor draw, and complete a charging system diagnosis, while knowing that your battery and charging systems are up to par with the safest standards. Our digital display makes understanding and operating these Battery Testers a breeze, even for the novice user. BT-25 - Automotive Power Alert $22.46 BT-50 - Digital Voltmeter $26.18 BT-100 - 100 amp Battery Load Tester $51.34 BT-250 - Digital Battery Tester $141.73 Copyright © 2008 Schumacher Electric Corp. All Rights Reserved.