Ever had a battery fail because of corrosion or exposure? A simple battery box can prevent costly damage and keep your power system safe. Del City offers a range of battery boxes and mounting solutions designed to keep your battery secure and protected in any environment including boats, RVs, and utility vehicles. Battery boxes from Attwood® can provide an economical solution to protect your battery from the elements, extend its life and ensure reliable power when you need it most.
Choosing the Right Battery Box for Your Application
A battery box is suitable for any application that uses a 12V battery, including lead-acid types such as deep cycle or dual-purpose marine batteries. Regardless of the type—Lithium-ion (LiFePO4), AGM, Gel, or lead acid—your battery should be protected from the elements because it contains corrosive chemicals that can harm people and the environment if the battery becomes damaged.
When choosing a battery holder, consider:
- Battery Type: Lead-acid batteries may require vented boxes for off-gassing, while lithium and AGM batteries typically do not.
- Size & Group: Match the box to your battery’s group size (e.g., Group 24, 27, 31).
- Application Environment: Marine and outdoor setups need corrosion-resistant, UV-stable materials.
- Extra Features: Some boxes include built-in terminals, accessory ports, or battery level indicators for added convenience.
Battery boxes are ideal to protect batteries in many applications including:
- Boats, Jet Skis & Kayaks
- RVs & Campers
- Trailers
- ATVs, UTVs & other types of utility vehicles
- Industrial equipment
- Automotive & Collector cars
- General battery storage & transportation
Why You Need a Battery Box
The primary purpose of a battery box is to keep your battery secure and contained to prevent damage and maintain the integrity of the battery so you can get the most out of it and have reliable power from your battery when you need it. The key benefits of battery boxes include:
- Protection from the elements – Shields exposure to elements like water, sun, dirt and salt that can accelerate wear.
- Safety – Should something happen to the battery, a battery box will keep any spilled chemicals contained, protecting people and equipment around the battery. And it keeps the metal terminals on a battery from ever coming into contact with other metal objects.
- Movement prevention – Battery boxes are designed to keep the battery securely in place which prevents opportunity for damage to the battery as its transported, even if the box is tipped over.
- Accessibility – A battery box creates a designated compartment for the battery which helps keep things organized and easily accessible.
Types of Attwood Battery Boxes
PowerGuard PRO Battery Boxes – PowerGuard PRO Battery Boxes have an advanced design to provide maximum durability, security, and convenience for Group 24, 27, and 31 batteries.
- Built from a rugged polypropylene composite that resists acid leaks, UV damage, and environmental wear
- Upward-facing ventilation system reduces water intake by 94% while spill channels direct rain and splash away from the battery
- Folding entry panels provide easy access to battery terminals without removing the hold-down strap
PowerGuard Battery Boxes – For a quality, cost-effective solution, Attwood’s PowerGuard Battery Boxes are available in a wide range of versatile sizes and options.
- Constructed from heavy-duty polypropylene for marine-grade durability with complete acid resistance
- Equipped with U.S. Coast Guard Certified hold-down straps rated at 350 lbs, exceeding industry standards for added safety
- Designed to withstand temperatures from -20°F and +120°F for extreme durability
The Power Box F27 Series Battery Box is engineered for size 27F batteries and offers enhanced functionality compared to standard battery boxes. It combines heavy-duty protection with advanced features for convenience and reliability.
- Built-in LED battery level indicator with a one-touch test button for quick status checks.
- External terminals for easy connection without opening the box.
- 12V DC accessory port equipped with a built-in 10A fuse to ensure safe and dependable performance.
Attwood Battery Box Comparison:
| Battery Box | Battery Series/Group | Internal Dimensions | Outer Dimensions | Options | Del City Part Number |
|---|---|---|---|---|---|
| PowerGuard PRO | Group 31 Group 27 Group 24 | 13-1/8” L x 7” W x 11” H | 21” L x 11-1/4” W x 11-1/2” H | Vented | 9090707 |
| PowerGuard 29/31 | Group 31 Group 29 | 15-7/16” L x 6-15/16” W x 9-3/4” H | 18-7/8” L x 9-1/4” W x 10-1/4” H | Vented | 9090841 |
| PowerGuard 27 | Group 27 (27, 27F, 27M) | 13-1/16” L x 6-15/16” W x 10-1/2” H | 16-7/8” L x 9-5/8” W x 10-7/8” H | Vented | 9090671 |
| Power Box F27 | Group 27F | – | – | – | 9090761 |
| PowerGuard 24 | Group 24 (24, 24F, 24M) | 10-5/8” L x 7” W x 10-1/8” H | 14” L x 9-5/8” W x 10-5/8” H | Vented & Non-Vented* | 9090651 9090691 |
| PowerGuard U1 | Group U1 | 8-1/4” L x 5-1/2” W x 7-7/8” H | 11” L x 7-1/2” W x 8-1/2” H | – | 9090821 |
*The PowerGuard 24 non-vented option is not intended for marine use.
Attwood Battery Trays – an alternative for tall batteries
Depending on the application, dimensions of the battery, or installation requirements, a battery box may not be possible, but it’s still important to secure the battery, so a Battery Tray may be a suitable alternative to a fully enclosed battery holder. For taller batteries, Attwood offers range of Heavy-Duty Adjustable Battery Trays which provide a corrosion-proof solution that meets ABYC E-10 and U.S. Coast Guard standards for marine applications.
Attwood Heavy-Duty Adjustable Battery Trays – Expands 7–9.5”
If you need flexibility for varying battery heights, the Heavy-Duty Adjustable Tray is your go-to solution. Built for rugged environments, it combines durability with adaptability, making it ideal for marine and RV applications where space and size can vary.
- Material: Heavy-duty, non-corrosive black plastic
- Adjustable Height: 7″ – 9.5″ for taller batteries
- Compatibility: Group 27 batteries
- Hardware: Includes adjustable crossbar and two retaining bolts
- Compliance: Meets ABYC E-10 and U.S. Coast Guard standards
- Ideal For: Marine and RV applications needing flexibility
Attwood Heavy-Duty Battery Trays – ABYC & USCG Compliant
For those requiring maximum stability for larger batteries, the Heavy-Duty Tray offers a fixed-size design with reinforced construction. It’s perfect for installations where strength and reliability are top priorities.
- Material: Heavy-duty, non-corrosive black plastic
- Fixed Size: Fits Group 29/31 batteries
- Dimensions: 13-1/16″ L × 6-7/8″ W
- Hardware: Stainless steel retaining bolts and molded-in fastener holes
- Compliance: ABYC E-10 and USCG compliant
- Ideal For: Larger batteries where maximum stability is required
Attwood Low Profile Adjustable Battery Trays – ABYC & USCG Compliant
When space is limited, the Low-Profile Adjustable Tray provides a compact solution without sacrificing security. Its streamlined design makes it perfect for tight compartments in boats or RVs.
- Material: Heavy-duty, non-corrosive black plastic
- Compact Design: Perfect for tight spaces
- Compatibility: Group 24 and 27 batteries
- Dimensions: 10-5/8″ L × 7-1/4″ W (24 Series) or 12-5/8″ L × 7-1/4″ W (27 Series)
- Hardware: Adjustable-height crossbar and two retaining bolts
- Compliance: ABYC E-10 and USCG compliant
- Ideal For: Space-saving installations in boats or RVs
Attwood Battery Tray with Straps – Fits Batteries Up to 10-1/2”
For a lightweight, cost-effective option, the Tray with Straps offers quick installation and easy battery removal. Its simple design is perfect for smaller setups or applications where convenience is key.
- Material: Molded plastic base with polypropylene strap
- Quick-Release Buckle: For easy battery removal
- Compatibility: Group 24, 27, and 29/31 batteries
- Dimensions: Up to 12-7/8″ L × 7″ W
- Hardware: Installs with four #10 panhead fasteners
- Ideal For: Lightweight, cost-effective mounting in compact spaces
| Tray Type | Material | Battery Size | Dimensions (inside) | Key Feature |
|---|---|---|---|---|
| Heavy-Duty Adjustable | Non-corrosive plastic | Group 27 | 12-1/8″ L × 6-3/4″ W | Adjustable height (7″–9.5″) |
| Heavy-Duty | Non-corrosive plastic | Group 29/31 | 13-1/16″ L × 6-7/8″ W | Stainless steel retaining bolts |
| Low-Profile Adjustable | Non-corrosive plastic | Group 24/27 | 10-5/8″ or 12-5/8″ L × 7-1/4″ W | Compact design for tight spaces |
| Tray with Straps | Molded plastic + strap | Group 24/27/29 | Up to 12-7/8″ L × 7″ W | Quick-release buckle strap |
How to install a battery box
Once you’ve selected a battery box or tray that meets your needs, installing it is easy! Attwood battery boxes and trays come with a tie-down strap and/or mounting hardware to secure the battery so that it stays in place even when driving down bumpy roads, uneven terrain or in rough water conditions.
To install the battery box, there are just a few simple steps:
- Place the box where you’d like to mount it, then slide the included mounting brackets underneath the box on each side.
- Remove the box and mark the screw locations for each bracket, then lay the included strap in between the screw marks.
- Lay the brackets over the strap and screw the brackets into place. With the strap secured to the mounting surface, just put the battery box in place and fasten the strap over the top of the battery box and you’re ready to go!
Conclusion
Protecting your battery isn’t just about convenience – it’s about safety, performance, and getting the most out of your investment. Proper storage and mounting are crucial for keeping your battery safe and secure. Attwood battery boxes from Del City make it easy to secure your battery against corrosion, vibration and environmental damage, helping ensure reliable power and performance. With durable construction, marine-grade reliability and simple installation, battery boxes are an economical way to get the most out of your battery.