Antigravity G35/350Z/G37/370Z/Q50/Q60 YTX20 Lightweight Lithium Battery w/Re-Start

The AntiGravity YTX-20 is one of the most popular lightweight battery swaps for VQ-platform cars like the G35, 350Z, G37, and 370Z — and for good reason. Weighing in at just 3.8 lbs, it delivers massive weight savings compared to the 35-plus-pound stock battery, instantly improving handling, acceleration, and braking response. Despite its compact size, the YTX-20 packs more than enough cranking power to fire up the VQ reliably, and its lithium LiFePO₄ chemistry means exceptionally long service life with far less self-discharge than a traditional lead-acid.

The only real “compromise” is physical size: the YTX-20 is much smaller than the factory Group 35, so you’ll need to secure it with either an aftermarket adapter bracket or simple custom bracketry. Many owners fabricate their own solutions, and there are universal lightweight battery trays on the market to make the swap straightforward. Beyond that minor fitment adjustment, there are virtually no downsides — you get faster starts, improved reliability, and a huge weight reduction in one of the highest-sitting points in the car.

Yes, the upfront cost is higher than a conventional battery, but that’s simply the premium for lithium performance. For anyone serious about shaving weight and squeezing every ounce of performance from their VQ-chassis, the YTX-20 is one of the smartest upgrades you can make.

Straight from Antigravity's groundbreaking RE-START line of batteries - the first batteries with built-in jump starting capability. The revolutionary ATX20-RS RE-START Battery intelligently monitors its status, and just before going completely dead puts itself to sleep with just enough energy to get your vehicle started again. Simply press the RE-START button located on the battery, start your vehicle and drive away. No more dead battery emergencies or being stranded!

Vehicle Compatibility:

• 2003–2007 Infiniti G35 Coupe VQ35DE

• 2003–2006 Infiniti G35 Sedan VQ35DE

• 2003–2009 Nissan 350Z VQ35DE / VQ35HR

• 2007–2008 Infiniti G35 Sedan VQ35HR

• 2008–2013 Infiniti G37 Coupe VQ37VHR

• 2009–2013 Infiniti G37 Sedan VQ37VHR

• 2009–2020 Nissan 370Z VQ37VHR

• 2014–2015 Infiniti Q60 Coupe VQ37VHR

• 2014–2024 Infiniti Q50 VQ37VHR / VR30DDTT

• 2017–2022 Infiniti Q60 VR30DDTT