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Power Vent Battery Box Vent
Lead-acid batteries produce hydrogen gas when charging, but leaving a battery box lid open to vent gas in cold climates can reduce battery capacity. Proper venting and thermal management is especially important when battery boxes are placed in basements, garages and sheds.

Water Miser Battery Caps
Water Misers are molded plastic “flip-top” vent caps designed to reduce and ease maintenance on flooded lead-acid batteries. There is no need to remove the caps when charging, filling, or equalizing the batteries.
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