... Storage Battery Systems Battery Capacity Testers, Check battery condition in seconds, with the battery in service! Battery Types Tested Compact storage batteries, Alkali and lead-acid batteries..Battery ... Capacity 0 to 1200AHResistanceRanges : 4mΩ, 40mΩ, 400mΩ, 4Ω, 40Ω, 400Ω Resolution : 1μΩ , 10μΩ , 100μΩ , 1mΩ , 10m ...