Battery Vent Caps

We manufacture battery caps in both standard and custom sizes. Click on the PDF links below to view our current drawings (your browser must be set to allow pop-ups).

If you do not know which battery cap you need, please measure your existing battery cap or the battery vent opening before ordering, and compare the dimensions with the ones shown in the PDF drawings below. Please read our battery vent cap FAQ page for more information.

To receive a quote for any custom size,  click here to email us.

Click here to view the Water Miser battery vent cap brochure.
Click here to view the Econ-O-Flip battery vent cap brochure.

Part #Imagepdf icon 
2000Water Miser Battery Vent Cap

Water-Miser Flip-Top Battery Vent Cap


Purchase this product here
  • Reduces Watering Intervals by up to 30%
  • Reduces Evaporation & Emissions
  • Reduces Maintenance Costs
  • Internal Spark-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 / Lost Battery Caps
  • 1/4-Turn Bayonet Style Mount

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1050#1050 Battery Vent Cap

Standard Battery Vent Cap


Purchase this product here
  • 1/4-Turn Bayonet Style Mount
  • Acid-Proof Rubber Seal Washer (Included)
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1070#1070 Battery Vent Cap

Safety Battery Vent Cap


Purchase this product here
  • 1/4-Turn Bayonet Style Mount
  • Acid-Proof Rubber Seal Washer (Included)
  • Contains Internal Flame-Spark Arrestor
  • Tested by Independent Lab
  • (Click the PDF Icon to View Certificate)
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2000S#2000S Water Miser Battery Vent Cap

Water-Miser Stationary-Top Battery Vent Cap


Purchase this product here
  • Reduces Watering Intervals by up to 30%
  • Reduces Evaporation & Emissions
  • Reduces Maintenance Costs
  • Internal Spark-Flame Arrestor
  • Acid-Proof Rubber Seal Washer (Included)
  • 1/4-Turn Bayonet Style Mount

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2025CELL-GARD 2025 Battery Vent Cap

Cell-Gard Flip-Top Battery Vent Cap


Purchase this product here
  • 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 / Lost Battery Caps
  • Acid-Proof Rubber Seal Washer (Included)
  • Internal Spark-Flame Arrestor
  • 1/4-Turn Bayonet Style Mount

pdf iconBuy Now
2050ECON-O-FLIP 2050 Battery Vent Cap

Standard Flip-Top Battery Vent Cap


Purchase this product here
  • 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 / Lost Battery Caps
  • Acid-Proof Rubber Seal Washer (Included)
  • 1/4-Turn Bayonet Style Mount
pdf iconBuy Now
2050SECON-O-FLIP 2050S Battery Vent Cap

Standard Stationary Top Battery Vent Cap


Purchase this product here
  • Acid-Proof Rubber Seal Washer (Included)
  • 1/4-Turn Bayonet Style Mount
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2075ECON-O-FLIP 2075 Push-in Battery Vent Cap

Standard Flip-Top Push-in Battery Vent Cap


Purchase this product here
  • 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 / Lost Battery Caps
  • Water Level Indicator (Basket) for More Accurate Filling
  • Push-in Style with Rubber O-ring Seal (Included)
pdf iconBuy Now
2085Water Miser Push-in Battery Vent Cap

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


Purchase this product here
  • Reduces Watering Intervals by up to 30%
  • Reduces Evaporation & Emissions
  • Reduces Battery Maintenance Cost
  • Internal Spark-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 / Lost Battery Caps
  • Water Level Indicator (Basket) for More Accurate Filling
  • Push-in Style with Rubber O-ring Seal (Included)
pdf iconBuy Now
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 Feature
  • 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 iconPrice Inquiry
3-GVCA-10703-gang Battery Speed Vent Caps

3-Gang Battery Speed Vent Caps


Purchase this product here
  • Allows Speedy Removal of all Battery Caps Simultaneously
  • Reduces Battery Maintenance Cost
  • Internal Spark-Flame Arrestors
  • Acid-Proof Rubber Seal Washers (Included)
  • Virtually Eliminates Dropped / Misplaced / Lost Battery Caps
  • Patent Pending Design
  • 1/4-Turn Bayonet Style Mount
  • Heavy Duty Construction
Buy Now
4-GVCA-10704-gang Battery Speed Vent Caps

4-Gang Battery Speed Vent Caps


Purchase this product here
  • Allows Speedy Removal of All Battery Caps Simultaneously
  • Reduces Battery Maintenance Cost
  • Internal Spark-Flame Arrestors
  • Acid-Proof Rubber Seal Washers (Included)
  • Virtually Eliminates Dropped / Misplaced / Lost Battery Caps
  • Patent Pending Design
  • 1/4-Turn Bayonet Style Mount
  • Heavy Duty Construction
Buy Now
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)
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1050WBattery Vent Cap 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
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4D-8D-PIA4D-8D Battery Vent Cap Adapter

4D-8D Battery Vent Cap Adapter


Purchase this product here
  • Converts 3/4" Diameter Hole to Accept 1/4-turn Bayonet Caps
  • Push-in Style (No seal required)
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4D-8D-SIA4D-8D Battery Vent Cap Adapter

4D-8D Battery Vent Cap Adapter


Purchase this product here
  • Converts 3/4" Diameter Threaded Hole to Accept 1/4-turn Bayonet Caps
  • Screw-in Style with Rubber Seal (Included)
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1050VCA#1050VCA Battery Vent Cap Adapter

Battery Vent Cap Adapter


Purchase this product here
  • Converts 1-3/8" Diameter Hole to Accept 1/4-turn Bayonet Caps
  • Push-in Style with Rubber O-ring Seal (Included)

pdf iconBuy Now
M22x1.5M22x1.5 Battery Vent Cap Adapter

M22x1.5 Battery Vent Cap Adapter


Purchase this product here
  • Converts M22x1.5 Threaded Hole to Accept 1/4-turn Bayonet Caps
  • Screw-in Style with Rubber O-ring Seal (Included)

pdf iconBuy Now
M27X3-SIAM27x3-SIA Battery Vent Cap Adapter

M27x3-SIA Battery Vent Cap Adapter


Purchase this product here
  • Converts M27x3 Threaded Hole to Accept 1/4-turn Bayonet Caps
  • Screw-in Style with Rubber Seal (Included)

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Showing all 20 results

  • Picture of Battery Vent Cap #2095

    2095 Series Battery Vent Caps

    #2095 Battery Vent Caps

    Features:

    • Available with or without Bottom Step on Diameter
    • Available with Flip-Top or Stationary-Top
    • Available with or without Water-Miser Feature
    • Water Level Indicator (Basket) for More Accurate Filling
    • Acid-Proof Rubber Seal Washer (Included)
    • 1/4-Turn Bayonet Style Mount
    • Custom Options are Available per Your Requirements

    Click here to contact us for pricing.

  • Sale! Model 3-GVCA-1070 battery speed caps

    3-Gang Battery Speed Vent Caps

    $12.95 $8.00

    #3-GVCA-1070 3-Gang Battery Speed Vent Caps Features:

    • Allows Speedy Removal of all Battery Caps Simultaneously
    • Reduces Battery Maintenance Cost
    • Internal Spark-Flame Arrestors
    • Acid-Proof Rubber Seal Washers (Included)
    • Virtually Eliminates Dropped / Misplaced / Lost Battery Caps
    • Patent Pending Design
    • 1/4-Turn Bayonet Style Mount
    • Heavy Duty Construction

    Fits into the three bayonet battery openings that measure 2.680 inches (approx. 2-11/16) from the center of one hole to the center of the next. Please measure your battery before ordering. Quantity discount for 24 or more. Click here to inquire. PayPal seal

  • Sale! Battery Speed Caps #4GVCA1070

    4-Gang Battery Speed Vent Caps

    $14.95 $10.00

    #4-GVCA-1070 4-Gang Battery Speed Vent Caps Features:

    • Allows Speedy Removal of All Battery Caps Simultaneously
    • Reduces Battery Maintenance Cost
    • Internal Spark-Flame Arrestors
    • Acid-Proof Rubber Seal Washers (Included)
    • Virtually Eliminates Dropped / Misplaced / Lost Battery Caps
    • Patent Pending Design
    • 1/4-Turn Bayonet Style Mount
    • Heavy Duty Construction

    Fits into the four bayonet battery openings that measure 2.50 inches from the center of one hole to the center of the next. Please measure your battery before ordering. Quantity discount for 24 or more. Click here to inquire. PayPal seal

  • Battery Vent Cap Adapter #4D-8D-PIA

    4D-8D Battery Vent Cap Adapter PIA

    $1.70

    #4D-8D-PIA Battery Vent Cap Adapter Features:

    • Converts 3/4″ Diameter Hole to Accept 1/4-turn Bayonet Caps
    • Push-in Style (No seal required)

    To buy, enter a quantity in the drop-down box below and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left. Quantity discount for 250 or more. Click here to inquire. To buy, enter a quantity in the drop-down box below and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left. PayPal seal

  • Battery Vent Cap Adapter #4D-8D-SIA

    4D-8D Battery Vent Cap Adapter SIA

    $1.70

    #4D-8D-SIA Battery Vent Cap Adapter

    Features:

    • Converts 3/4″ Diameter Threaded Hole to Accept 1/4-turn Bayonet Caps
    • Screw-in Style with Rubber Seal (Included)

    Quantity discount for 250 or more. Click here to inquire. To buy, enter a quantity in the drop-down box below and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left. PayPal seal

  • Battery Cap Washer

    Battery Cap Washer

    $0.24$0.28

    The perfect replacement for your worn out battery cap rubber washers. This rubber gasket will fit all quarter-turn bayonet battery caps including speed vent caps. Our rubber washers will fit all of our battery caps except for part #2075, #2085, & #5000 (those models use O-ring seals instead of rubber gaskets). When you purchase any of our vent caps, this rubber washer is already included and does not need to be ordered separately. Our high-performance rubber washers are made of genuine Santoprene rubber for extra long life and superior durability. This rubber gasket is not affected by battery acid and will remain highly flexible to provide lasting sealing properties. We have used the same rubber washers on our forklift batteries for years, and we virtually never need to replace them. In our experience, these rubber washers will last the lifetime of the battery cap itself. To make sure they will fit your application, please measure your existing washers and compare it with the dimensions of our rubber washers that are listed below. This rubber washer is available in two thicknesses. Our #1050W rubber washer is .064″ thick and is used for most applications. This rubber washer comes standard on all of our battery vent caps and is the most common size. Our #1050W2 rubber washer is .110″ thick and is used in rare situations where the standard rubber washer is not thick enough to provide a good seal. Features:

    • Fits all Bayonet Battery Caps
    • 1.380″ O.D. x .946″ I.D.
    • Acid-Proof

    (Minimum order is 25 washers) To buy, select the washer thickness in the drop-down box below. Then enter the quantity and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left. PayPal seal

  • Sale! Picture of two models of Battery Speed Vent Caps manufactured by Doyle Shamrock Industries..

    Battery Speed Vent Caps

    $8.00$10.00

    Benefits:

    • Instantly Remove all Battery Caps Simultaneously
    • Reduces Battery Maintenance Cost
    • Internal Spark-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

    Click here to view the brochure and ordering instructions.

    Speed Vent Caps Quantity Discounts

    Part Number PrefixQuantityPrice
    3-GVCA1-10$8.00
    "11-50$7.00
    "51-100$6.00
    "101 +Contact Us
    4-GVCA1-10$8.00
    "11-50$7.00
    "51-100$6.00
    "101 +Contact Us

    To buy, select a model in the drop down box below. Then enter the quantity and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left.

    PayPal seal

  • Battery Vent Cap Adapter #1050VCA

    Battery Vent Cap Adapter

    $1.70

    #1050VCA Battery Vent Cap Adapter Features:

    • DIN to Bayonet Adapter
    • Converts 1-3/8″ Diameter Hole to Accept 1/4-turn Bayonet Caps
    • Push-in Style with Rubber O-ring Seal (Included)

    Quantity discount for 250 or more. Click here to inquire. To buy, enter a quantity in the drop-down box below and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left. PayPal seal

  • Cell-Gard Flip-Top Battery Cap

    Cell-Gard Flip-Top Battery Vent Cap

    $3.00$1,250.00

    #2025 Battery Vent Cap

    Benefits:

    • 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 / Lost Battery Caps
    • Acid-Proof Rubber Seal Washer (Included)
    • Internal Spark-Flame Arrestor
    • 1/4-Turn Bayonet Style Mount

    Save 50 cents each when you buy a case of 500. 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

  • Battery Vent Cap #5000

    Flip-Top Battery Vent Cap

    #5000 Battery Vent Cap

    This vent cap was designed for European and Douglas batteries and fits into a 1-3/8 inch (1.375″) diameter battery opening. Please measure before ordering. Features:

    • Water Level Indicator (Basket) for More Accurate Filling
    • Flip-Open Top Allows Faster Inspection & Watering
    • Push-in Style with Rubber O-ring Seal (Included)

    Click here to contact us for pricing.

  • Adapter for retrofitting bayonet style caps to batteries with M22 threads.

    M22x1.5 Battery Vent Cap Adapter

    $2.21$213.00

    #M22X1.5 Battery Cap Adapter

    Features:

    • Converts M22x1.5 Threaded Hole to Accept 1/4-turn Bayonet Caps
    • Screw-in Style with Rubber O-ring Seal (Included)

    To buy, enter a quantity in the drop-down box below and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left.

    Quantity discounts are available.
    Click here to inquire.

    PayPal seal

  • Adapter for retrofitting bayonet style caps to batteries with M27 threads.

    M27X3-SIA Battery Vent Cap Adapter

    $2.21$213.00

    #M27X3-SIA Battery Vent Cap Adapter

    Features:

    • Converts M27-3 Threaded Hole to Accept 1/4-turn Bayonet Caps
    • Adapts #4000600 Level Indicator to fit Threaded Battery Hole
    • Screw-in Style with Rubber Seal (Included)

    To buy, enter a quantity in the drop-down box below and click the “Add to cart” button. Then click the “Checkout” button that appears at the top left.

    Quantity discount for 250 or more.
    Click here to inquire.

    PayPal seal

  • Battery Vent Cap #1070

    Safety Battery Vent Cap

    $1.00$220.00

    #1070 Battery Vent Cap

    Features:

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

    You may view the lab test report here. Why pay extra for a vent cap that has an internal spark arrestor? Find out why by reading this. To buy, choose either single or case quantity in the 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

  • Available colors for model 1050 Battery Vent Caps are yellow, red, orange, black, blue, and white.

    Standard Battery Vent Cap

    $1.00

    #1050 Battery Vent Cap

    Features:

    • 1/4-Turn Bayonet Style Mount
    • Acid-Proof Rubber Seal Washer (Included)

    Quantity Discounts

    QuantityPrice
    1-99$1.00
    100-249$0.48
    250-499$0.44
    500 +Contact Us
    To buy, select a color in the drop-down box below. Then enter the quantity and click the Add to cart button. Then click the Checkout button that appears at the top left.

    PayPal seal

  • Standard Flip-Top Battery Cap

    Standard Flip-Top Battery Vent Cap

    $1.90$2.25

    #2050 Battery Vent Cap

    Benefits:

    • 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 / Lost Battery Caps
    • Acid-Proof Rubber Seal Washer (Included)
    • 1/4-Turn Bayonet Style Mount

    This battery vent cap is available in four models. Click here to see the difference between part numbers.

    Quantity Discounts

    Part NumberQuantityPrice
    20501-99$1.90
    "100-249$1.80
    "250-499$1.75
    "500 +Contact Us
    2050CE1-99$2.00
    "100-249$1.90
    "250-499$1.85
    "500 +Contact Us
    2050C1-99$2.00
    "100-249$1.90
    "250-499$1.85
    "500 +Contact Us
    2050EX1-99$2.25
    "100-249$2.15
    "250-499$2.00
    "500 +Contact Us
    To buy, select a part number in the drop-down box below. Then enter the quantity and click the Add to cart button. Then click the Checkout button that appears at the top left.

    PayPal seal

  • Standard Flip-Top Push-In Battery Cap

    Standard Flip-Top Push-In Battery Vent Cap

    $2.50$1,185.00

    #2075 Battery Vent Cap

    This vent cap fits into a 1-3/8 inch (1.375″) diameter battery opening. Please measure before ordering. Benefits:

    • 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 / Lost Battery Caps
    • Water Level Indicator (Basket) for More Accurate Filling
    • Push-in Style with Rubber O-ring Seal (Included)

    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

  • Standard Stationary-Top Battery Cap

    Standard Stationary-Top Battery Vent Cap

    $2.25$1,180.00

    #2050S Standard Stationary-Top Battery Vent Cap

    Features:

    • Acid-Proof Rubber Seal Washer (Included)
    • 1/4-Turn Bayonet Style Mount

    To buy, select 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

  • Water Miser Battery Cap

    WATER MISER Battery Caps

    $3.98$5.38

    Water Miser Benefits:

    • Water Miser Battery Vent Caps Reduce Evaporation
    • Internal Condenser Reduces Watering Intervals by up to 30%
    • Reduces Acid Fumes & Emissions
    • Keeps Top of Batteries Drier
    • Water Miser Caps Reduce Maintenance Costs
    • Internal Spark-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

    Water Miser Battery Cap Models

    #2000 Our most popular model. Recommended for most applications.

    #2000C Larger opening for easier watering and level checking. Extra height reduces potential overflow.

    #2000EX Our tallest model. Provides maximum protection against potential overflow. May not be suitable where space is limited. Compare the difference between all three models.

    Water Miser Quantity Discounts

    Part NumberQuantityPrice
    20001-99$3.98
    "100-249$3.84
    "250-499$3.74
    "500 +Contact Us
    2000C1-99$4.78
    "100-249$4.62
    "250-499$4.54
    "500 +Contact Us
    2000EX1-99$5.38
    "100-249$5.12
    "250-499$4.99
    "500 +Contact Us
    To buy, select a part number in the drop-down box below. Then enter the quantity and click the Add to cart button. Then click the Checkout button that appears at the top left.

    PayPal seal

  • Water Miser Flip-Top Push-in Battery Cap

    Water Miser Flip-Top Push-in Battery Cap

    $5.00$2,375.00

    #2085 Water Miser Battery Cap

    This vent cap fits into a 1-3/8 inch (1.375″) diameter battery opening. Please measure before ordering. Benefits:

    • Internal Condenser Reduces Watering Intervals by up to 30%
    • Reduces Evaporation & Emissions
    • Reduces Maintenance Costs
    • Internal Spark-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 / Lost Battery Caps
    • Water Level Indicator (Basket) for More Accurate Filling
    • Push-in Style with Rubber O-ring Seal (Included)

    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

  • Water Miser Stationary Battery Cap

    Water Miser Stationary-Top Battery Cap

    $4.00$1,875.00

    #2000S Water Miser Battery Cap

    Benefits:

    • Water Miser’s Internal Condenser Reduces Watering Intervals by up to 30%
    • Reduces Evaporation & Emissions
    • Reduces Maintenance Costs
    • Internal Spark-Flame Arrestor
    • Acid-Proof Rubber Seal Washer (Included)
    • 1/4-Turn Bayonet Style Mount

    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