Battery Tender® 12V / 6V Battery Tester Marine All hardware is stainless steel

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

40 Amps Total

Monitor voltage and charge in the same connection

Bulk Charge — Full 10 Amps output per bank restores depleted capacity rapidly

Battery Tender® 12V / 6V Battery Tester Marine All hardware is stainless steelThe 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