SDHQ Off Road

'07-21 Toyota Tundra SDHQ Built Complete Dual Battery Kit

  • VENDOR: SDHQ Off Road
  • PART#: SDHQ-53-3000-G3
  • YOUR PRICE: Regular price $1,492.62
  • SDHQ Built Dual Battery FAQs
  • If you have questions about our SDHQ Built Dual Battery Kits. Our SDHQ Built Dual Battery FAQ page will most likely have the answers to most, if not all, of your questions


Our SDHQ Built Dual Battery kit for the 2007-2021 Toyota Tundra is the most durable dual battery system on the market today. There is no need to piece different components to make your dual battery set up to work. We include all the parts you need for a clean direct from the factory quality install. This dual battery kit was 3D CAD designed, engineered & built in-house for our typical SDHQ Built quality, fit, and finish.

Benefits of running a dual battery system:

If you are someone who goes or is planning on going on 4x4 camping trips (overlanding), then you will need auxiliary power. A dual battery system is where two separate batteries are working in conjunction with each other. However, each battery has a different purpose. Running a second battery will ensure your Toyota Tundra has start-up power and that your fridge, lights, and other campsite accessories have constant power.


  • 2007-2021 Toyota Tundra


  • 3D CAD designed, engineered & built in-house for our typical SDHQ Built quality, fit, and finish
  • Drilling (2) ¼” mounting holes required
  • The tray mounts to (7) locations on top and (1) location to the side of the wheel well
  • Second battery location provides better weight distribution than systems that put the batteries right next to each other.
  • Triangulated mounting positions to provide superior strength (utilizes the firewall, inner fender, and wheel well when mounting).
  • Fits batteries with dimensions up to 10 7/8” Wide x 6 7/8” Deep x 7 1/2” Tall (top of battery, not terminal).
  • Powder coated black for a durable finish.
  • Test fitted with Stock and TRD Intake Air Box Systems (may fit with other intake systems but not guaranteed)
  • Intergrated mount for Blue Sea Systems ACR
  • Recommended to use 2 new matching batteries. *Batteries are not included*
  • The #SDHQBUILT Dual Battery Kit for the 2007-2021 Toyota Tundra will allow you to run all of your aftermarket accessories without draining your main battery.


  • SDHQ Dual Battery Wiring Kit - SDHQ-50-3002-U1
  • HD Billet Main Battery Terminal Kit - SDHQ-50-3003-C2
  • 34R Main Billet Battery Hold Down - SDHQ-50-3005-U1
  • HD Billet Secondary Battery Terminal Kit - SDHQ-02-3003-C1
  • Blue Sea Systems ACR (Automatic charging relay)
  • 07-21 Tundra Secondary Battery Tray Kit - SDHQ-53-3001-G3
  • 07-21 Tundra Windshield Wiper Reservoir Relocation Kit - SDHQ-53-1160-G3



  • 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.
    • Powder coated black for a durable finish.
    • Includes Billet Hold Down
    • Fits batteries with dimensions up to 10 7/8” Wide x 6 7/8” Deep x 7 1/2” Tall (top of battery, not terminal).
    • Does NOT fit Group 27 or 31 batteries
    • 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

  • This kit includes everything needed to wire your SDHQ Dual Battery Mount System
    • Premium Cross-Linked SAE J-1127-SGX cables
      • 2 AWG Main Cables (main to aux battery ground and main/aux batteries to ACR)
      • 4 AWG Second Battery to Frame Ground Upgrade
      • 6 AWG Main Battery to Body Upgrade
      • 6 AWG Aux Battery to Body Upgrade
    • Upgraded ground wires provide better connection between both batteries and Body/Frame grounds

  • SDHQ'S Billet Battery Terminal Upgrade kit is designed to replace your vehicle's OEM battery terminals. No more splicing and cutting up your vehicle's wiring when installing your off-road accessories.
    • Multi connection Battery Terminal
    • Five additional terminal pads
      • 2 - 3/8" Terminal pads
      • 1 - 5/16” Terminal pad
      • 2 - 1/4" Terminal pads
    • Ability to retain all factory wiring
    • Positive and Negative Billet 6061 Aluminum Terminals.
    • Complete Hardware Kit
      • Stainless Steel Hardware with included Anti-Seize Compound.

  • Secure your vehicle's primary battery with SDHQ's Billet Battery Hold Down. Manufactured out high quality 6061 Aluminum, this billet hold down kit replaces your vehicle's OEM steel factory hold down.
    • 3D CAD designed, engineered & built in-house for our typical SDHQ Built quality, fit, and finish
    • Billet Aluminum Hold Down replaces factory sheet metal hold down.
    • Anodized Hold Down for durability.
    • Billet Aluminum for strength
    • Easy driveway installation, no drilling or trimming required.
    • Fits 34R size aftermarket batteries only.

  • Our terminal protection kit were designed and engineered in house at SDHQ for our typical SDHQ Built quality, fit, and finish.
  • Why do I need this protection kit?
    If you are working under the hood of your vehicle our protection kit will protect your billet battery terminals from short circuits.
    • Includes negative and positive protection boot
    • Injection Molded from ExxonMobil Santoprene
    • Recyclable and environmentally friendly

  • Our #SDHQBuilt HD Billet Battery Terminal Kit is designed to be used with a secondary battery (dual battery kit) set up.

  • If you are planning on running an SDHQ dual battery set up on your 2007-2021 Toyota Tundra, you will have to relocate the windshield wiper reservoir. This kit is designed to relocate the reservoir with no drilling, cutting, or welding.
    • For Tundras only. Relocates a new Windshield Wiper Bottle behind the air intake.
    • Includes new 2 Quart Windshield Wiper Bottle with pump, relocation mount, harness to power pump and hardware.
  • Circuit allows up to 500 Amps continuous draw and 700 Amps for 5 minutes. 
  • Cranking rating of 1450 @ 30 seconds. 
  • Live Current Switching up to 300 amps. 
  • Circuit is designed to auto charge the 2nd battery when the vehicle is running, but isolates the 2nd battery when the vehicle is off. Leaving the second battery for emergency starting. 
  • Manual switch on the circuit allows the batteries to combine or isolate. 
  • Optional Remote switch control and LED output to indicate when the batteries are combined, isolated or in lockout. 
  • Undervoltage lockout below 9.6 Volts. Overvoltage lockout above 16.2 Volts. 

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