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Description
Genesis Offroad Dual Battery Kit, Gen 3, 2007 - 2021 Toyota TundraGen 3 Dual Battery System for 2007 2021 Toyota Tundra Genesis Offroad launched the first completely integrated, easy to install dual battery system for the Jeep Wrangler in 2013. Never satisfied with 'good enough', we have listened to customer feedback and refined our dual battery system to be even better suited to meet the demands of today's off road vehicles and their drivers. Our purpose remains the same to allow you to enjoy your aftermarket
Gen 3 Dual Battery System
for 2007 - 2021 Toyota Tundra
Genesis Offroad launched the first completely integrated, easy to install dual battery system for the Jeep Wrangler in 2013. Never satisfied with 'good enough', we have listened to customer feedback and refined our dual battery system to be even better suited to meet the demands of today's off road vehicles and their drivers.
Our purpose remains the same - to allow you to enjoy your aftermarket electrical accessories without worrying about draining down your cranking battery. Even if your cranking battery gets too low to start the engine, simply press a button to jump start from your second battery. Gone are the old days of reading wire schematics to figure out how to add a second battery to your vehicle with a manual selector switch or isolator device. Genesis dual battery kits are completely pre-wired for you out of the box for easy installation. No wire strippers or crimpers required!
What's new with Gen 3
1 - New heavy duty battery combiner
Allows your engine's alternator to charge your cranking and accessory batteries.Connects batteries together in parallel while driving, then separates them once the voltage drops below 12.7v to protect your cranking battery from getting drained by your accessories.Rated for 300 amps continuous current flow, and spikes of up 2500 amps for 10 seconds to handle anything you can throw at it.Compatible with all modern high output alternators.Uses NO power to keep batteries connected, allows batteries to stay fully charged when not in use and run accessories even longer.Generates NO heat, since no current is flowing through it while the batteries are connected, the battery combiner produces no heat at all.More robust and more reliable design means more worry-free adventures
2 - New boost button
Now includes 3 user-selectable modes - Auto, On, and Off'Auto' mode automatically connects batteries when either one is above 13.1v for 90 seconds, and disconnects them when they drop below 12.7v for 30 seconds.'On' mode will manually connect the batteries together. Use this to jump start the engine when the cranking battery is low, or manually provide extra run time to your accessories by using both batteries together.'Off' mode will manually separate the batteries. Use this when you want to leave the batteries isolated for any reason. Note the alternator will not charge the Aux battery while in this mode.The green halo light will turn on to indicate the batteries are connected, and the light will be off when the batteries are separated.3 - New bus bars
Now includes 3 tall studs and 3 small screws for power & ground wire connectionsDifferent stud sizes 1/4", 5/16", and 3/8" give you more flexibility for connecting your heavy duty accessory cables such as a winch, stereo amplifier, air compressor, fuse panels, etc.Lighter gauge wires such as LED lights, CB, etc, can use the 3 small screws for connecting #10 sized ring terminals.Any accessories connected to the bus bars will run from the Aux battery and will not drain down the cranking battery.The protective cover flips up for easy access for routing your wires.
4 - New Heavy Duty Cables
Higher solid copper strand count for more current carrying capacity and more flexibilityThicker insulating jacket for even more protection from the elementsHeavy duty adhesive lined heat shrink protects the wire from corrosionTin-plated copper lugs and post clamps for superior conductivity
New Cover
Our most requested feature!
Completely covers all the electronics and wiring for protection and a cleaner lookEasy flip up access to your bus bars
G Screen Monitoring System portIntegrated connection point for plugging in the optional G Screen.This kit uses G Screen v5.3, part number 227-GS
System Includes:
- Gen 3 Power Hub
- Smart battery combiner
- Boost switch
- Accessory Bus bars
- G Screen port
- All wiring
- Steel Battery Tray
- Installation hardware
Batteries: Sold separately. Matching Group 25 batteries are required.Battery Options:
- Requires 2 Group 25 size batteries, any brand.
- Batteries must be the same physical size for the lid to securely hold them in place
- We recommend the Full Throttle FT750-25 or the Odyssey ODP-AGM25, or any other high quality AGM batteries
- The Optima Red Top Group 25 and the Optima Yellow Top Group 75/25 will work, but due to their physically smaller size, they have far less capacity than other brands, and therefore we do not recommend Optima batteries with this kit.
- Traditional wet lead acid batteries are NOT recommended
- Note the stock battery is NOT compatible with this kit
Optional Ring Terminal
Are you planning on connecting some accessories to the power & ground bus bars? We offer this convenient 16 piece assortment of high quality, adhesive-lined heat shrink ring terminals. These are much better quality than the cheap ring terminals at the auto parts stores.Each package Includes 4 each of the following sizes to match the bus bars on the Gen 3 Power Hub.Each package Includes 4 each of the following sizes to match the bus bars on the Gen 3 Power Hub.
- #10 ring, 16-14ga
- 1/4" ring, 16-14ga
- 5/16" ring, 12-10ga
- 3/8" ring, 12-10ga
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 91 reviews
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Product Reviews
★★★★★ 5
Worth it!
Size: Queen(Pack of 2)
These pillows are amazing and very soft and comfortable. They came nicely packaged and I let them sit out for just a few hours before using them and that was plenty of time! They come with the cooling cover and fit a standard queen sized pillowcase. The material expands well and does not have any weird smells. 10/10 well worth the price.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Miracle pillow
Size: Standard(Pack of 2)
Best pillow I’ve ever had. I have been using this since December 2024 and it still hasn’t gotten flat. It is amazingly comfortable and solves all my neck issues for a side sleeper. My head never gets hot either. I’ve recommended this to my friends and they’ve had success with it as well.
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Reviewed in the United States on May 28, 2026
★★★★★ 4
Really wanted to love these
Size: Queen(Pack of 2)
I really wanted to love these but they gave me a stiff neck. I haven't slept with a pillow since buying these. They are firm except where you lay your head. It just deflates there. I expected it to sink in to match the curve of my neck but it was more than I could handle. My head ended up in a valley between the two ends of the pillow. The price was good, zipper worked fine, it looks as advertised and the pillows are good quality. The cooling part works, its just not what I needed.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
best pillow I have ever bought.
Size: Queen(Pack of 2)
most comfortable pillow I have ever bought. It seems very well put together so I believe that it will last a long time. Very happy with the purchase. I do think the weight of the pillow will surprise many people because while it is quite heavy, it is very firm and extremely comfortable. Great value.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
I paid for the product and it’s GOOD 👍🏽
Size: Queen(Pack of 2), Size: Queen(Pack of 2)
Honest review to help your decision. These are a bargain at two for one. I paid almost $30 for one at a local retailer and it’s already flattened after 7 months.
This product arrives vacuum sealed with the cooling pillow covers separately (separate so you can wash before using). They are loaded with memory foam which I found pleasing. I chose to leave all of the foam in because I’m sure it’ll flatten sometime in the future. I’ve been using these for TWO MONTHS now and they have not flattened.
Easy to mold and fluff, soft and they are added support for my back up pillows. I cannot attest to any type of pain relief because I have not experienced that with these personally. I do feel my sleep is better so my tension headaches have lessened.
The cooling hex layer is on the cover NOT the actual pillows. I’m sure everyone knows that memory foam gets really hot 🥵 but the cooling covers on these help minimize that. It actually feels cool to the touch like a gel product. I find the quality to be exceptional.
All in all, give it a shot.
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Reviewed in the United States on September 16, 2025