BATTERY CHARGER The Amprobe BAT500 Battery tester is a quick and accurate battery testing without taking the batteries off line. With the BAT 500, the user cam test solar power back-up and UPS Systems. Comparator function with pass/fail indication speeds testing of batteries up to 500Ah. Typical applications include but are not limited to power back-up and UPS systems.   Specifications Battery Types Tested    Compact storage batteries, Alkaline, Nickel-Metal Hydride (NiMH), Nickel-Cadmium (NiCd), Lithium-ion (Li-ion) and lead-acid batteries Battery Capacity    0 to 500AH Impedance Measurement    Range    40mΩ, 400mΩ, 4Ω, 40Ω Resolution    10μΩ, 100μΩ, 1mΩ, 10mΩ Accuracy    ±(1%reading ±10digits) Open Circuit Voltage    3.5Vpp max Measurement Current    25mA approx., 2.5mA approx., 250μA approx., 25μA approx Measuring current Frequency    1KHz ±10% Voltage Measurement    Range    4V, 40V Resolution    1mV, 10mV Accuracy    ±(0.1% rdg ±6 digits) Data Memory    500 data sets Continuous Data Memory    9600 data sets (only use PC download) Comparator    Setting    Resistance upper and lower limits and voltage throughold point Number Of Comparator Settings    99 sets of values Operating Environment    0°C to 40°C (32°F to 104°F) , 80%RH or less, non-condensing Maximum Input Voltage    50 VDC Power Supply or AC Adapter    Six size AA 1.5V Battery Life    7 hours approx Weight    Approx. 500g (1.1 lb) including batteries Dimensions    250 x 100 x 45mm (9.8 x 39.4 x 1.8 in) (L x W x H)