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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
4.2 ★★★★★
Based on 402 reviews
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Product Reviews
★★★★★ 5
Great Watch For the Money
Color: Black/Black, Style: AE1000W-1BVCF
I have been purchasing Casio watch products for over 25 years now. Their watches are low cost and nicely designed. I was not let down when I received this watch and all for 18 dollars. The watch is nice looking, has mostly usable features which fulfills its purpose. For a watch that costs under 20 dollars this is a great knock-around piece that can be worn in any setting. Whether hiking/climbing in the woods, fixing the car, swimming or just plain rough housing with my kids, having a low cost and functional watch that fits all my needs really makes this product a great buy.
This Casio comes with several functions:
1) You can track up to 4 different time zones. Since I do a fair amount of business travel (about 1x a month), I am constantly in different time zones. Now I can set them easily.
2) The watch has a manual DST setting which I don't mind. It's literally a push of a button.
3) It is water resistant to 10 Bar. This means swimmers, surfers, etc... can use this watch with confidence.
4) It comes with a typical alarm. I always make sure I know how to turn this off, because you know somehow some 2 or 3 year old will get it and find a way to turn on the alarm so that it wakes you and 0200 in the morning.
5) Stop watch. Not much to say here. I use it for running/walking
Cons: A couple of oddball design features that are difficult to see.
1) The upper right hand circle is actually a visual of an analogue watch, so that if you look at another time zone besides the one that you set for your home city, you can get a quick view of the time. Not so easy to see.
2) The time zone characterization is also difficult to see and not so sure it is necessary, since the back of the directions lists out the cities you can use to select the proper time zones.
So this may not be a "smart" watch which seems to be very popular these days, but I will say the price makes it very worth while. If you need a knock-around that looks nice and has the core functions you need, I think you will be very satisfied with this product. You know... maybe some things don't need to be smart. Enjoy!
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Reviewed in the United States on November 2, 2014
★★★★★ 5
It is mini computer for such a low price. My favorite. Just go for it, you will be amazed!
Color: Black, Style: AE-1000W-1AVDF
I would say this is a mini computer and I keep wondering how could they put these many functions inside this small watch and offering it for 15 dollars.I'm blown away by this wonderful product and this is my favorite watch all the time and I rarely wear my other watches.
Isn't this amazing that it got the time for close to 50 cities and I can select 4 of them in T1(Home City), T2, T3 and T4 to easily flip through using the bottom right button. This functionality helped me a lot during my 2 international trips through multiple transits. Before the departure I select all the Cities that I'm transiting through so that I can easily flip to that time zone when I land in that airport and I do not need to rely on airport clock or internet to know the time and calculating the time left for catching my connecting flight. I love this watch especially for this functionality.
While scrolling through the time zones for selection the tiny world map in the watch will blink the specific geographical area for that time zone. The capabilities of this watch does not end here, It has lot more to offer.
We can program 5 daily or one time alarms into this tiny piece. Stopwatch, Counter, 12 or 24 hour time format, Day light saving ON or OFF which simplifies the time setting when the DST switches. We can set it to signal a beep for every hour.
There is digitally displayed manual clock at the top right corner which will display your home country time stored in the T1 timezone. When I go on an international trip, I flip the digital display to local time(T2-T4) and will refer the home city time(T1) in the manual clock.
The watch is really durable, light weight, stylish, sporty, water proof, 10 years battery life and comes with a detailed instruction for setting up each and every functionality of this watch.What more can I expect for a 15 dollar watch.
My impression to buy this watch happened after seeing one my friends wearing it. I bought one for me and 3 more for giving it as gift. My friend lost it twice and bought the same watch 3rd time which proves how much he also likes it.
The last thing that I want to say is, I don't like the fancy brands which charge their customers just for the sake of their brand name or fancy packaging and offer noting more than a normal brand offers. I always prefer quality over show off so I picked this Casio watch. I really appreciate that CASIO believed in quality and functionality and not on fancy packaging.
I feel really bad that I'm writing this review after 1.5 years of my purchase and I should have done it long back. I highly recommend this watch for everyone and I'm sure you will never be disappointed.
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Reviewed in the United States on April 23, 2016
★★★★★ 5
Excellent value
Color: Green, Style: AE1000W-3AV
Nice watch typical Casio quality for a excellent price
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Reviewed in the United States on March 4, 2026
★★★★★ 3
The little watch that tried...and almost succeeded.
Color: Black/Black, Style: AE1000W-1BVCF
The main problem with this watch for me is it tries to do too much and relies heavily on the user.
With Day light Savings time not being universal in when it starts, when it ends, and which countries decide to use it, it is a lot of work for some functions
Day Light Savings time really hurts this watch and what it tries to do.
This Casio watch is priced right and pleasant to look at. It has four main functions\modes.
1 Timekeeping
2 World Time
3 Stop watch
4 Alarm
I'll focus on the first 2 as this is where it shines and falls short for me.
In TIME KEEPING mode --Works Great
You can set 4 different times and tab through them with the bottom right button. This is very useful and quite easy to set up. Upon setting up your local time the next three will be based off that and you only need to set Day Light Savings time on or off accordingly. This is easy to maintain and the world map reflects the time zone you are currently in.
In WORLD TIME mode you can quickly tab through over 40 cities around the globe. This is where the watch falls short. You need to set each city depending on their Day Light Savings time. Some cities do not use DST, some start in the middle of March, Some start at end of March, ect.. If you do not mind doing this for each city in WORLD TIME which will require you to look up each of their DST information then this is a nice function. I'm not at all interested in doing this. This is a function an atomic watch would excel at but a manual setting watch it's not worth the effort
The rest of the features are more than gimmicks. The world map is functional, especially if you set the DST for each of the cities in WORLD TIME. The analog dial always shows your current time no matter what mode you are in or which of the 4 cities you are on in TIME KEEPING mode.The light is unbalanced but sufficient to light the entire dial. You can change it to 3 seconds from it's factory 1.5 seconds which makes it much more useful.
If you want this watch to keep track the current time in four cities it is very easy to set up and works quite well.
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Reviewed in the United States on March 10, 2014
★★★★★ 5
Well made, high quality wallet
Size: One Size, Color: Brown
I bought this for my husband for Father's Day. It's a beautiful, well made, quality wallet. The stitching is heavy duty and the leather is very nice. It isn't bulky. A few months of having it and it seems to have broken in well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2025
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