The BA9 Battery and System Tester features an operating range of 4.5-16V and is optimized to test six distinct battery types: Conventional Flooded Acid, AGM Flat Plate, AGM Spiral Wound, Start-Stop AGM, Start-Stop Enhanced Flooded and Gel Cell batteries It also features the convenience of starting and charging system testing, offering quick assessment and providing both a numerical result and a pass / fail result The BA9 has a testing range of 40-1200 CCA, covering everything from powersport to Group 31 batteries It features an LCD display that offers a high level of detail throughout the testing process and improved viewing in bright sunlight It also features reverse polarity protection to avoid damage from reverse hookups and over-voltage protection when attached to a system with voltage exceeding 15V 1 Year Limited