The B1100 Battery Load Tester evaluates the battery's ability to supply sufficient current to the standby supply or other electronic device. The tester draws current from the battery while measuring its voltage potential. The voltage of a good battery will remain steady under load while a defective battery will exhibit a rapid loss in potential. Battery size (Amp-Hour Capacity) and temperature will affect the test results, so please follow instructions carefully. Perfect for cars, light trucks, garden tractors, R.V.'s and marine batteries. Easy to use, accurate, dependable & shock resistant! Tests 6 and 12 Volt SLA, Gel & Flooded batteries in 10 seconds. * Volts: 6 & 12 Volt Batteries* Load: 100 Amp* Battery Sizes: 50 to 750 CCA or 7 to 80 Amp Hours* Cables: 14.4" long Heavy Duty Insulated* Clamps: Color Coded Copper Plated* Size: 6.9" x 3.49" x 13.7"* Weight: 2.9 lbs.