1957AVehicle Battery Tester


This is a helpful tester for 12V vehicle battery. User is able to check the battery power level and the charging condition with various circumstances. It is also able to monitor the alternator condition by very easy procedure.


  • With CE & UKCA Approvals.
  • With a Magnetic Board on the back slide to fix on suitable metal sheet of cars easily.
  • Voltage Range: DC 6 ~ 16V
  • Reverse Polarity Protection: Yes
  • Short Circuit Protection: Yes
  • Over-Voltage Protection: Yes (Forward DC Voltage <30V for < 10 seconds)


Alternator Overcharging (RED) Strong Output
Alternator O.K. (GREEN) Normal Output
≥ 75% (GREEN) Good
≥ 25% (GREEN) Fair
< 25% (RED) Poor
Battery Power (GREEN) Battery Connected