Applicable battery specifications:Suitable for lithium batteries, lithium iron phosphate, lead-acid, nickel-metal hydride and other battery packs with operating voltages of 9-100V. Voltage measurement 9-100V Current range 300A Test capacity 0-99.9KAH Test power: 0-999999W Time record 0:00:00-999:59:59 Working current Backlight on 10mA Backlight off 5mA Product accuracy 0.5% Voltage Resolution 0.1V Current resolution 0.1A Voltage display mode 0.0-99.9-100V Capacity display mode 0-999mAH-1.00AH-9.99AH-10.0AH-99.9AH-100AH-999AH 1.00KAH-9.99KAH-10.0KAH-99.9KAH Power display mode 0.0-99.9W-100W-999W-1.00KW-9.99KW-10.0KW-99.9KW 100KW-999KW Colour:black Material:ABS Package Contents: 1 x Coulomb Tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.