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'07-21 Toyota Tundra SDHQ Built Dual Battery Tray Kit
Dual Battery Wiring Kit (SDHQ-50-3002-U1)
STATE OF CALIFORNIA CONSUMER WARNING: Some products may contain chemicals such as DEHP, which can cause cancer, birth defects or other reproductive harm.
The Toyota Tundra SDHQ Built Dual Battery Tray Kit for the 2007-2021 Toyota Tundra allows you to mount a second battery in your Tundra's engine compartment.
This Dual Battery kit was 3D CAD designed, engineered & built in-house for our typical SDHQ Built quality, fit, and finish.
FITMENT DETAILS:
- VEHICLE FITMENT: 2007-2021 Toyota Tundra
- This kit only includes the dual battery tray kit to include our wiring kit please select that in the product options above
- This kit removes the factory windshield wiper bottle in Toyota Tundras. To maintain a windshield wiper bottle, purchase the Tundra Windshield Wiper Bottle Relocation - SDHQ-53-1160-G3.
KEY FEATURES:
- Fits 2007-2021 Toyota Tundras
- Drilling (2) ¼” mounting holes required for Tundras.
- The tray mounts to (5) locations on top of the wheel well.
- Second battery location provides better weight distribution than kits that stuff 2 batteries in the stock location.
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Battery Fitment
Mount fits Group 24, 34/34R (34R fits stock battery location) and 35 series batteries - Fits Group 24 and 35 batteries with the SDHQ Built Secondary Battery 24F/35 Upgrade Kit (SDHQ-50-3005-24F) *See product configuration
- May fit other batteries with dimensions of 10 7/8” Wide x 6 7/8” Deep x 7 1/2” Tall (top of battery, not terminal) or less.
- Powder coated black for a durable finish.
- Test Fit with Stock and TRD Intake Air Box Systems (may fit with other intake systems but not guaranteed)
- Recommended to use 2 new matching batteries. *Batteries not included*
- Integrated mount for Blue Sea Systems ACR.
- This kit replaces the (2) power steering hoses to the factory power steering reservoir with longer, upgraded Fragola hoses.
- A new fabricated power steering mount relocates the factory power steering reservoir out of the way.
TECH NOTES:
- This kit removes the factory windshield wiper bottle in Toyota Tundras. To maintain a windshield wiper bottle, purchase the Tundra Windshield Wiper Bottle Relocation - SDHQ-53-1160-G3.
WHAT'S INCLUDED:
- Main Battery Mount
- Toyota 34R Battery Hold Down
- Rear Upright Support
- Vertical Support
- Hardware Kit
SDHQ DUAL BATTERY WIRING KIT:
Our #SDHQBUILT Dual Battery Wiring for your Toyota Tundra includes everything you need to wire your SDHQ Dual Battery System. This Wiring Kit is designed to be used with a battery isolator between the batteries.
WHAT'S INCLUDED:
- Premium Cross-Linked SAE J-1127-SGX cables
- 2 AWG Main Cables (main to aux battery ground and main/aux batteries to battery isolator)
- 4 AWG Second Battery to Frame Ground Upgrade
- 6 AWG Main Battery to Body Upgrade
- 6 AWG Aux Battery to Body Upgrade
Recommended to use 2 new matching AGM or Sealed batteries
Why do I need to use matching batteries?
Batteries in series or parallel applications, where more than one battery is connected to another battery should always have batteries that are identical in age, size and type. Batteries that are different from each other in any of those ways will behave differently when delivering and receiving electricity, which can leave one chronically undercharged, while the other is chronically overcharged, shortening the lifespan of both.

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