Sealey-Digital-Battery-Alternator-Tester-with-Printer-Sealey-BT2003-p-Professional-diagnosis-of-battery-&-alternator-faults-with-the-added-facility-to-print-the-results-Test-battery-condition-with-as-little-as-1V-of-residual-charge-No-heat-no-sparks-&-no-misdiagnosis-Checks-condition-of-alternator-no-complicated-connections-or-interpretation-required-Analyse-the-charging-system-at-rest-&-under-load-to-determine-condition-of-the-alternator-Connect-&-follow-the-prompts-on-the