OEMTOOLS 24359 Digital Battery Analyzer, 1 Pack ACCURATE AND EASY TO USE: This compact battery tester puts easy-to-understand results right in the palm of your hand. System conditions are indicated in an LCD display (eliminating the need for print-outs). Navigation is easy using left/right arrows and an Enter button to select options. WIDE TESTING RANGE (200-1200 CCA): Test results are based on EN, DIN, SAE, CA, and IEC Standards. BUILT FOR SAFETY: Its designed for a DIYer or seasoned professional to see voltage, charge, cranking power, and level of Ohm resistance. You can check the alternators charge and starters cranking condition. Test the vehicles charging system (load voltage, unloaded voltage, ripple status, and charging system status). FLEXIBILITY AND PORTABILITY: Made with a flexible insulator, it has a 22-inch cable. It gets power directly from the battery being tested (no internal batteries are required). It comes with a limited 90 Day Warranty.