Safety Battery Vent Cap


#1070 Battery Vent Cap


  • 1/4-Turn Bayonet Style Mount
  • Acid-Proof Rubber Seal Washer (Included)
  • Contains Internal Flame Arrestor
  • Tested & Certified by Independent Lab

Click here to view the lab test report. Why pay extra for a vent cap that has an internal spark arrestor? Click here to find out why. To buy, choose either single or case quantity in the drop-down box below. Then enter the desired quantity and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left. PayPal seal

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This battery vent cap is designed differently and costs slightly more than our standard vent cap, but it provides peace of mind. Due to the fact that all lead-acid batteries produce a flammable gas, a flame arrestor is an important option. Hence if a nearby spark ignites the gas, the internal spark arrestor stops the flame from entering the battery where it could ignite the internal gas. You can also read more about this battery vent cap by clicking here.

This battery cap will fit on all batteries that have a standard 1/4-turn bayonet vent opening. Several adapters are also available that allow you to retrofit this vent cap to most other batteries. If your battery needs a screw-in or push-in type vent cap, choose from the threaded and push-in type adapters that are listed below.

Screw-in battery cap adapters:
#4D-8D-SIA  Adapter (7/8 inch diameter threads) Fits 4D and 8D batteries.
#SE2218  Adapter (M22x1.5 metric threads)
#M27x3-SIA  Adapter (M27x3 metric threads) Fits Enersys Varta battery.

Push-in battery cap adapters:
#4D-8D-PIA Adapter (Presses into 3/4 inch diameter hole.) Fits 4D and 8D batteries, or any battery with a 3/4″ diameter vent hole.
#1050VCA  Adapter (Pushes into 1-3/8 inch diameter hole.) Fits European style DIN battery.

Additional information

Weight 0.015 lbs
Dimensions 1.36 × 1.36 × 0.93 in
Single / Case of 500

Single, Case of 500