How to Mount 2 Batteries on A-Frame Trailer with Limited Space on Tongue
Question:
Hi we just bought a new Winnie and are looking to install 2 batteries to extend our off the grid time. Im having trouble finding something that works as the battery mounting area is either perfect for 2 batteries and too small for 2 battery boxes....the area we are working on is 21 length and 8 wide. the mount is in between the frames
asked by: Bradley V
Helpful Expert Reply:
I do have a possible solution for you but unfortunately there aren't any battery boxes available that will hold two 12V batteries and fit within a 21" length and 8" width. The closest thing we have is the TorkLift PowerArmor Locking Battery Box # TLA7708R which measures 26-3/4" long x 8-3/16" wide x 13" tall and as you can see from customer pictures the batteries fit in there pretty snug.
Your batteries actually don't have to be side by side so you could potentially put one inside your trailer or you could place one on something like the Stromberg Carlson Trailer Tray Cargo Carrier # CC-255 which installs on your A-Frame and sits 29" above the frame.
The NOCO Battery Box with Strap # 329-HM300BKS was made for Group 24 batteries but it does have internal dimensions of 10-1/2" long x 7-3/16" wide x 9-5/8" deep so you could potentially use it to keep your 12V batteries safe.

Products Referenced in This Question
Snap-Top Battery Box with Strap for Group 24 Batteries - Vented
- Battery Boxes
- Camper Battery Box
- Equipment Battery Box
- Marine Battery Box
- Trailer Battery Box
- Group 24 Batteries
- 14L x 10W x 10-11/16D Inch
- Black Plastic
- NOCO
more information >
Stromberg Carlson Trailer Tray Cargo Carrier for A-Frame Trailers - 300 lbs
- RV Cargo Carrier
- Cargo Tray
- A-Frame Trailer Mount
- Stromberg Carlson
more information >
Product Page this Question was Asked From
TorkLift PowerArmor Locking Battery Box - 6V and 12V Batteries - Diamond Plate Aluminum
- Battery Boxes
- Camper Battery Box
- Trailer Battery Box
- 6V Batteries
- 12V Batteries
- Locks
- 27-3/4L x 9-3/4W x 13D Inch
- Aluminum - Diamond Plate
- TorkLift
more information >
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Jim G.
5/28/2020
Jon G, I don't think it is legal or advisable to mount batteries inside the trailer due to outgassing of hydrogen. Jimbo