Introducing our voltage booster, the perfect solution for all your AGM battery needs! This amazing product corrects your alternator output by 1/2 to 3/4 of a volt, ensuring that your AGM batteries are always correctly charged and maintained.

AGM batteries, such as Odyssey, Optima, Northstar, and others, require a higher charging voltage than stock lead-acid batteries. Our voltage booster will force your alternator to output between 14.1 and 14.7 volts, the optimal range for charging and maintaining AGM batteries.

Our voltage booster is not only effective but also built to last. The diode in our booster is professionally installed and soldered, ensuring a secure connection and optimal performance. To further protect the diode from external factors, such as moisture and heat, it is coated with a polymer compound, providing extra durability and longevity to our booster.

Installation is a breeze - simply replace the ALT-S fuse in your front fusebox with this booster and retain your factory fuse protection. It's that easy! Our booster has been verified to work with a range of popular vehicle models, including the 2003-2009 4Runner, 2004-2006 Tacoma, and 2007-2014 FJ Cruiser.

Don't let a dead battery ruin your day. Investing in our voltage booster is investing in the longevity of your vehicle's electrical system. Enjoy peace of mind knowing that your AGM batteries are always charged and your alternator is functioning optimally. Order your voltage booster today and enjoy a hassle-free driving experience!

Verified to work with:

2003-2009 4Runner

2004-2006 Tacoma V8 engines. V6 search "special Tacoma"

2007-2014 FJ Cruiser

2007 Tacomas are backwards for some reason. Contact me to make you a special one.

This will only work with MINI FUSE - it will not work with other makes/ models/ years not listed above!

1 YEAR WARRANTY ON PART - We will replace any failed part, no questions asked.