Battery Vent Caps with Integrated Watering System and Water Level Monitor for RV, Marine, Golf Cart, and Solar Systems. A 6-pack of Round 3/4" Press in Caps for 12 Volt Deep Cycle Batteries.

  • The quick, simple, and safe way to maintain your deep cycle batteries.
  • Easy to see water level indicators. 
  • Allows for the watering of batteries without having to remove the caps.
  • Fits 12 volt batteries with a round 3/4" press in mount.
  • Most 12 volt deep cycle Marine & RV Group 24,27,29, & 31 batteries
  • A 6 pack accommodates one 12 volt battery
  • WILL NOT FIT BATTERIES WITH TWIST LOCK CAPS! PLEASE CHECK Your Existing CAPS and MEASURE!
  • These caps require 2 1/4" of clearance above the battery mounting surface.
  • Check out our other listings for more models.
    • How To Use the Ez Battery Check Water Level Monitor:

    Proper safety measures should be used.

        1. Ensure that the battery is fully charged.
        2. The battery’s electrolyte level should be at the manufacturer’s recommended level.  Add distilled water if necessary.  Do not over fill.
        3. Remove the original vent caps and the install the Ez Check Battery caps.
        4. Note the level of the red float indicators and position the O rings even with the bottom of the red float indicators.
        5. The Ez Battery Check cap is now ready to be monitored. When the red float indicator drops below the O ring, remove the cap and slowly add distilled water to the manufactures recommended level. Re-install the Ez Battery Check Cap and continue to monitor.

        Your batteries should be checked frequently to maintain the correct fluid levels