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Keep Your Batteries Protected with Attwood

crash courses in automotive | Posted: 9/1/2021

One of the main reasons that people use battery boxes is to protect their batteries. In Canada, battery boxes are a great investment, since they provide an extra layer of protection should your car battery crack in the frigid winters!

What a Battery Box Does?

A battery box keeps battery acid from potentially spilling out and harming not just the battery, but the material and people nearby as well.It contains the battery so it’s not able to shift more than an inch in any direction, which prevents it from becoming damaged, even if the box is tipped over. The box also keeps the battery terminals (the metal electrical contacts on your battery) from coming into contact with other metal objects – which could result in quite the shock!

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Pipe Pronghorn Lead-Acid Battery

Batteries are organized into groups based on a series of numbers developed by the Battery Council International (BCI). BCI publishes the industry standards for lead-acid batteries, including; testing standards, battery dimensions, and amps. The BCI group numbers identify the exact battery used in vehicles based on: case size, voltage, maximum overall dimensions, terminal arrangement, and special features that affect the battery fit.

If you’re looking for the BCI number on your battery, it can be on the top of the battery, printed on a label that will have other measurements on it as well.

Which Batteries Need Boxes?

Lead-acid batteries should be in a battery box if they are exposed to the elements. These batteries, as the name suggests, contain lead, which is a very toxic metal that can be absorbed by your body and the environment. There is also sulfuric acid in these batteries, which can be corrosive.

Deep-cycle lead-acid batteries, or batteries on a high charge, emit hydrogen gas. These batteries are normally used in marine, traffic signals (such as message boards, arrow boards, and speed readers), and recreational vehicles, but they’re used in automotive applications as well. Most often, the gas from a deep-cycle battery is formed when you overcharge a battery. If the concentration of hydrogen gas becomes 4% or higher, you might just have an explosion on your hands – not an ideal situation regardless if you’re on land or the water. A battery box will provide a safe vent to divert any gases that may be produced by a battery during recharges so they don’t build up within the box.

About Our Selection of Battery Boxes

Attwood Battery Boxes
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Here at, we carry the Attwood battery box in five different sizes. We have the small box which is suitable for group 16 batteries, the standard box (both vented and non-vented) which is designed for group 24 or 24M batteries, the Power Guard 27 box which is designed for group 27/27F/27M batteries, and the large box which can be used with group 29 or 31 batteries.

Battery boxes can be used on your RV, in a warehouse environment where you want to protect the battery (or surrounding area) from spillage and debris, for a spare battery in your car or garage, and even as a portable charger to bring with you on your next camping trip.

The Attwood battery boxes have been tested in temperatures ranging from -29°C to 49°C and the hold-down straps can resist up to 350 pounds of force. So even if you’re hauling your trailer down a bumpy oil field road, your box isn’t likely to rattle loose.

How to Install A Battery Box?

Each Attwood box comes with mounting hardware and brackets that hold your strap in place. To begin set up just follow these easy steps:

  1. Set your battery box where you would like it to be located and take your first mounting bracket and slide it beneath the front edge of the box. That way, it will sit flush with the box when installation is completed.
  2. Do the same with the other side of the box.
  3. Mark your screw locations and removed the mounting brackets. Lay your strap between the marks, where the gap in your mounting bracket is.
  4. Place the brackets over the strap and screw them into place. This way, your strap is secure and sturdy.
  5. Finally, place the box on top of your strap, strap it into place, and you’re ready to hit the road!

Now, that covers some of the basics about Attwood battery boxes. If you have any questions about sizes or the different kinds of boxes we carry here at, feel free to contact us here. And make sure to subscribe to our email list so you can keep up to date with new flyers, products, and giveaways!

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