Water-Miser Vent Caps
These molded plastic “flip-top” vent caps allow safe and efficient maintaince of your batteries.  Unlike hydrocaps*, there is no need to remove the Water-Miser vent caps when charging, filling, or equalizing your batteries.  Plastic pellets, located inside of these caps, capture up to 90% of the moisture and liquid droplets from the electrolyte solution, reducing your exposure to sulfuric acid fumes & liquid, preventing terminal corrosion, and keeping your battery tops dry and clean!  Battery water loss is reduced, which results in less frequent watering. 

*When batteries are charging, hydrocaps reduce water loss up to 90% by recombining released oxygen and hydrogen. Water-Miser vent caps do not recombine these elements, however, water loss is reduced by 30-75% by absorbing and releasing water and acid particles in the form of condensation (into battery).

Water-Miser Vent Caps Bayonet quarter-turn design fits most all-wet batteries.
$ 4.50
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Water-Miser Cap Adapters Also needed for use with KS-21 batteries.
$ 1.00
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