Battery Tender® 12V / 6V Battery Tester Marine Spark-proof connection — No current

Spark-proof connection — No current flows through the clamps until polarity and connection are confirmed correct

Any vehicle where ease and speed of connection is a priority for seasonal storage management

The 12V AC

All hardware is stainless steel throughout — no zinc or plated steel that will corrode in saltwater conditions

Battery Tender® 12V / 6V Battery Tester Marine Spark-proof connection — No currentThe Battery Tender 12V 6V Battery Tester is the fastest way to assess battery health before a storage season, after a long discharge, or when a battery is not holding charge as expected. Designed for both 12V and 6V lead acid batteries, it provides an immediate read of battery voltage and charge state no multimeter knowledge required, no complex settings, no waiting. Who It's For Any vehicle owner who maintains a battery dependent fleet multiple