For every day do-it-yourself use. Easy to operate. Test load, battery condition, starter motor draw and complete charging system diagnosis. Works on 6 and 12 volt batteries. 10 amp load test - for 6 volt batteries. 50 amp load test - for 12 volt batteries. Tests 6 and 12 volt batteries - up to 1000 CCA. Top mounted rocker switch - For easy operation. Super-grip battery clamps - heavy duty and color-coded. Easy to read meter - accurate and shock resistant. Baked enamel, steel case - ventilated to keep cool. Rubber insulated carrying handle - for comfort and safety.