Professional diagnosis of battery and alternator faults. Test battery condition with as little as 1Volt of residual charge. No heat, no sparks and no misdiagnosis. Checks condition of starter - no complicated connections or interpretation required. Analyse the vehicles charging system at rest and under load to determine condition of alternator. Connect the BT2002 and follow the prompts on the LCD screen for straightforward answers. Incorporates simple voltmeter for voltage tests and additional system diagnostics. Rugged construction. Supplied with instruction manual.