About Ancel BA301 Battery Health Tester. ✅【6 & 12 Volts battery tester】Most battery testers on the market can only test 12v battery. As the upgraded version of BA101 ,BA301 car battery tester can works on all 6V and 12V lead-acid batteries from 100 to 2000 CCA, including regular flood batteries, AGM flat batteries, AGM spiral batteries, GEL and EFB batteries.
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