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 9-100VCurrent range 300ATest capacity 0-99.9KAHTest : 0-999999WTime record 0:00:00-999:59:59Working current Backlight on 10mABacklight off 5mAProduct accuracy 0.5%Voltage Resolution 0.1VCurrent resolution 0.1AVoltage display mode 0.0-99.9-100VCapacity display mode 0-999mAH-1.00AH-9.99AH-10.0AH-99.9AH-100AH-999AH1.00KAH-9.99KAH-10.0KAH-99.9KAH display mode 0.0-99.9W-100W-999W-1.00KW-9.99KW-10.0KW-99.9KW100KW-999KWColour:blackMaterial:ABSPackage Contents:1 x Coulomb Tester 1 x English manualOnly 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.