BVA-300 Auto Meter Hand Held Electrical System Analyzer with 40 Amp Load - The BVA-300 is a Technician grade handheld electrical system tester that preforms a compete electrical system test in less than 82 seconds. Utilizing an on-board 40 amp load, the BVA-300 uses patented Digital Pulse Load technology to fully test most batteries, starters and alternators completely.