Battery Vent Caps

We make battery caps in both standard and custom sizes. To view our battery vent cap drawings, please choose one of the PDF links below.

Choose from our 3 models below according to which features you need.

Econ-O-Flip
This one is our basic vent cap, and it has the lowest cost. Therefore, it does not have a flame arrestor or the Water Miser feature.

Cell-Gard
This is our deluxe model. Thus, it costs more because it has a flame arrestor for added safety. With this in mind, you may want to read this article which shows why it’s a good thing to have a flame arrestor in your vent caps.

Water Miser
This is our top-of-the-line model, and it has a safety flame arrestor. In addition, it has our Water Miser option so that you do not need to add water to your battery as often.

For more info on our Water Miser vent caps, please view the Water Miser Battery Vent Cap Brochure.
For more info on the Econ-O-Flip vent caps, please view the Econ-O-Flip Battery Vent Cap Brochure.

If you do not know which vent cap you need, please measure your original vent cap or the battery vent hole prior to ordering. Then compare those measurements with the ones shown in our drawings. Please read our battery vent cap FAQ page for more info.

To get a quote for any custom size, please contact us for more info.

Battery Vent Caps Chart

Part #Imagepdf icon
FLUX1000, FLUX2000Battery Recombination Vent Caps

Battery Recombination Caps

  • Saves Time and Money
  • Reduces Emissions
  • Integrated Bi-Directional Valve
  • Acid-Proof Rubber Seal Washer (Included)
  • 1/4-Turn Bayonet Style Mount
pdf iconView in Store
2000Water Miser Battery Vent Cap

Water-Miser Flip-Top Battery Vent Cap

  • Reduces watering intervals by up to 30%
  • Reduces evaporation & emissions
  • Reduces maintenance costs
  • Contains internal flame arrestor
  • Acid-proof rubber seal washer (included)
  • Flip-open top allows faster inspection & watering
  • Flip-top rotates 360° for easy positioning
  • No need to remove vent cap from battery
  • Virtually eliminates dropped, misplaced, or lost battery caps
  • 1/4-turn bayonet style mount

pdf iconView in Store
1050#1050 Battery Vent Cap

Standard Battery Vent Cap

  • 1/4-turn bayonet style mount
  • Acid-proof rubber seal washer (included)
pdf iconView in Store
1070#1070 Battery Vent Cap

Safety Battery Vent Cap

  • 1/4-turn bayonet style mount
  • Acid-proof rubber seal washer (included)
  • Contains internal flame arrestor
  • Tested by independent lab
  • (Select the PDF icon to view certificate)
pdf iconView in Store
2000S#2000S Water Miser Battery Vent Cap

Water-Miser Stationary-Top Battery Vent Cap

  • Reduces watering intervals by up to 30%
  • Reduces evaporation & emissions
  • Reduces maintenance costs
  • Internal flame arrestor
  • Acid-proof rubber seal washer (included)
  • 1/4-turn bayonet style mount

pdf iconView in Store
2025CELL-GARD 2025 Battery Vent Cap

Cell-Gard Flip-Top Battery Vent Cap

  • Flip-open top allows faster inspection & watering
  • Flip-top rotates 360° for easy positioning
  • No need to remove vent cap from battery
  • Virtually eliminates dropped, misplaced, or lost battery caps
  • Acid-proof rubber seal washer (included)
  • Internal flame arrestor
  • 1/4-turn bayonet style mount

pdf iconView in Store
2050ECON-O-FLIP 2050 Battery Vent Cap

Standard Flip-Top Battery Vent Cap

  • Flip-open top allows faster inspection & watering
  • Flip-top rotates 360° for easy positioning
  • No need to remove vent cap from battery
  • Virtually eliminates dropped, misplaced, or lost battery caps
  • Acid-proof rubber seal washer (included)
  • 1/4-turn bayonet style mount
pdf iconView in Store
2050SECON-O-FLIP 2050S Battery Vent Cap

Standard Stationary Top Battery Vent Cap

  • Acid-proof rubber seal washer (included)
  • 1/4-turn bayonet style mount
pdf iconView in Store
2075ECON-O-FLIP 2075 Push-in Battery Vent Cap

Standard Flip-Top Push-in Battery Vent Cap

  • Flip-open top allows faster inspection & watering
  • Flip-top rotates 360° for easy positioning
  • No need to remove vent cap from battery
  • Virtually eliminates dropped, misplaced, or lost battery caps
  • Water level indicator (basket) for more accurate filling
  • Push-in style with rubber O-ring seal (included)
pdf iconView in Store
2085Water Miser Push-in Battery Vent Cap

Water-Miser Flip-Top Push-in Battery Vent Cap

  • Reduces watering intervals by up to 30%
  • Reduces evaporation & emissions
  • Reduces battery maintenance cost
  • Internal flame arrestor
  • Flip-open top allows faster inspection & watering
  • Flip-top rotates 360° for easy positioning
  • No need to remove vent cap from battery
  • Virtually eliminates dropped, misplaced, or lost battery caps
  • Water level indicator (basket) for more accurate filling
  • Push-in style with rubber O-ring seal (included)
pdf iconView in Store
2095
series
#2095 Flip-top Battery Vent Cap

2095 Series Battery Vent Caps

  • Available with flip-top or stationary-top
  • Available with or without Water-Miser option
  • Water level indicator feature for more accurate filling
  • Acid-proof rubber seal washer (included)
  • 1/4-turn bayonet style mount
pdf iconPrice Inquiry
5000#5000 Push-in Battery Vent Cap

Flip-Top Battery Vent Cap

  • Water level indicator (basket) for more accurate filling
  • Flip-open top allows faster inspection & watering
  • Push-in style with rubber O-ring seal (included)
pdf iconView in Store
3-GVCA-10703-gang Battery-Speed-Vent-Caps

3-Gang Battery Speed Vent Caps

  • Allows speedy removal of all battery caps simultaneously
  • Reduces battery maintenance cost
  • Internal flame arrestors
  • Acid-proof rubber seal washers (included)
  • Virtually eliminates dropped, misplaced, or lost battery caps
  • Patented design
  • 1/4-turn bayonet style mount
  • Heavy duty construction
View in Store
4-GVCA-10704-gang Battery-Speed-Vent-Caps

4-Gang Battery Speed Vent Caps

  • Allows speedy removal of all battery caps simultaneously
  • Reduces battery maintenance cost
  • Internal flame arrestors
  • Acid-proof rubber seal washers (included)
  • Virtually eliminates dropped, misplaced, or lost battery caps
  • Patented design
  • 1/4-turn bayonet style mount
  • Heavy duty construction
View in Store
4000425, 4000550, 4000600Battery Water-Level Indicator

Battery Water Level Indicator

  • Instantly know if your battery needs water
  • Dual spark arrestors
  • Easy 1/4-turn installation
  • 3 models available for different fill heights
  • Acid-proof rubber seal (included)
pdf iconView in Store
1050WBattery Vent Cap Rubber Washer

Battery Vent Cap Washer

  • Our standard vent cap washer
  • Fits all battery vent caps listed above except for O-ring type
  • 1.380 O.D. x .946 I.D. x .064 thick
  • Other available thicknesses: .075 (#1050W.075) and .110 (#1050W2)
  • Acid-proof
pdf iconView in Store
4D-8D-PIA4D-8D Push-in Vent Cap Adapter

4D-8D Battery Vent Cap Adapter

  • Converts 3/4" diameter hole to accept 1/4-turn bayonet caps
  • Push-in style (no seal is required)
pdf iconView in Store
4D-8D-SIA4D-8D Screw-in Vent Cap Adapter

4D-8D Battery Vent Cap Adapter

  • Converts 3/4" diameter threaded hole to accept 1/4-turn bayonet caps
  • Screw-in style with rubber seal (included)
pdf iconView in Store
1050VCA#1050VCA Battery Vent Cap Adapter

Battery Vent Cap Adapter

  • Converts 1-3/8" diameter hole to accept 1/4-turn bayonet caps
  • Push-in style with rubber O-ring seal (included)
pdf iconView in Store
M22x1.5M22x1.5 Battery Vent-Cap Adapter

M22x1.5 Battery Vent Cap Adapter

  • Converts M22x1.5 threaded hole to accept 1/4-turn bayonet caps
  • Screw-in style with rubber O-ring seal (included)
pdf iconView in Store
M27X3-SIAM27x3-SIA Battery Vent-Cap Adapter

M27x3-SIA Battery Vent Cap Adapter

  • Converts M27x3 threaded hole to accept 1/4-turn bayonet caps
  • Screw-in style with rubber seal (included)
pdf iconView in Store

Showing all 18 results

icon-angle icon-bars icon-times