Antigravity Group-U1 / U1R Lithium Auto Battery


  • Group U1 and U1R OEM Automotive and UTV Case size (directly replace stock battery).
  • LxWxH: 7.75 x 5.2 x 7.3 inches.
  • Amp Hours: 20 Ah.
  • High Power: 925 Cranking Amps.
  • Exclusive RE-START Technology: Wireless Jump-Starting built-in; just press the button on your Keyfob remote.
  • Advanced Battery Management System built-in.
  • Ultra Lightweight: Drop up to 30 lbs instantly! 70% lighter than lead.
  • Safest Battery Technology using full BMS and Lifepo4 Lithium chemistry.
  • Many Applications: Auto, Lawn/Tractor, Generator Battery and more.
  • Threaded Terminals: M8x1.25

SHIPPING NOTE: Adult signature required.

SKU: AG-U1-RS Category: Tag:

Group-U1 Battery

NEW! Lightweight Lithium Batteries with Wireless Built-In Jump Starting!

The first Intelligent Lithium-Ion Automotive Battery that won’t leave you stranded!

This newest RE-START Battery is made in the U1 and U1R Sizes. The U1 Battery size is very compact, and is used in many applications such as Smaller Automobiles such as the Mazda Miata, in some brands of UTVs, Farm Equipment, Riding Lawn Mowers, Small Tractors, and more. This Lithium U1 Battery also features our famous “RE-START” built-in WIRELESS Jump-Starting! That means if your battery is ever discharged to the point of going dead, for example by leaving your lights on or playing the stereo too much, you simply press the Button on the provided Keyfob (2 keyfobs included), start the Vehicle and drive away! No need for a Jump-Starter, or any assistance. You don’t even have to access or touch the battery; do it from the seat of your vehicle. The AG-U1 RE-START Battery has 20 Amp Hours and is available in Right or Left Side Positive Terminals. It comes with a carry handle, and also Includes our Automotive SAE Terminal Adapters. If you want to also track your battery status via Bluetooth and an App on your phone, you can use our Lithium Battery Tracker.




Never stranded again… Our amazing RE-START Technology is the first battery ever to offer Wireless Remote-activated built-in Jump Starting. (Can also be activated manually by pressing the Restart button on top of the battery.) So the RE-START Battery won’t allow you to get stranded with a dead battery! For example if you left your lights on, the intelligent Battery Management System (BMS) would put itself to sleep before being drained dead, yet save just enough energy to start your vehicle and get you out of that emergency. And with our WIRELESS REMOTE KEYFOB you can activate the Jump-Starting without ever opening the hood of the car. Simply press the Keyfob Button, start your vehicle and drive away.



The Antigravity Batteries RE-START system offers the latest technology for the safest, longest life cycle possible. Our superior on-board Battery Management System (BMS) offers Safety Circuitry to prevent Over-Discharge and Over-Charge, and has Short-Circuit protections, while additionally offering Cell Balancing and Thermal protections. These advanced features of our BMS make the battery not only as safe as possible, but also extend the life of the battery by keeping the battery in the prime operating zone and not allowing damage to the battery, therefore creating the longest possible Life Cycle. From 7-9 years are expected from the Antigravity RE-START Batteries depending on use and climate.



The Antigravity Batteries RE-START Automotive Batteries come in EXACT FIT OEM sizes for most all Automobiles, Motorcycles, and Powersports Vehicles. We are the First Lithium-Ion Battery company to offer most every popular BCI (Battery Council International) size including H5/Group 47, H6/Group 48, H7/Group 94R, Group 35 and several other sizes that allow our batteries to fit most every vehicle on the road from vintage to modern. So whether you have a Porsche, Lamborghini, GTR, Mustang, Camaro, Corvette, Viper, BMW, Audi, Subaru or other Performance Car, we have a model that can fit. But keep in mind Lithium isn’t only for Performance Cars, it works great in Trucks, and Passenger Cars too! (Please check our Car Battery Fitment page for details).


Weight: The ultralight Antigravity RE-START Batteries weigh from 8.5 lbs to 16 lbs (4-7 Kg) depending on the model and Amp Hours. On average this equates to a weight loss from 35- 60 lbs (16-27 Kg) over a typical lead/acid battery! The incredible weight savings will increase your vehicle’s performance in several key areas such as handling, allowing shorter braking distances, improved acceleration and even better gas mileage. Additionally, our Lithium-Ion battery is by far the most economical weight loss product on the market! A 30 lbs weight reduction in Carbon Fiber or Titanium would cost over $50,000 dollars compared to roughly $600-$800 dollars for our Battery. Plus with our battery you won’t ever be stranded!
Power: The high cranking power of the Antigravity Lithium-Ion Battery can start Motors more efficiently than Lead/Acid Batteries! Our Lithium batteries have over twice the Cranking Power of the same size Lead/Acid battery! This equates to better Starting due to less voltage sag on start-up, and a faster spinning motor as well in most cases. So cars start much better using a Lithium Battery.


At Antigravity Batteries we realize our customers have different applications. So we offer different Amp Hour Capacities in the same Case Size. For example some owners may just need the basic battery for average daily use, and they have not added accessories to their vehicles so they will use a standard Amp Hour model, while another user might have put extra lighting on the vehicle, or want to store the vehicle longer so they would want to opt for a battery with more Capacity, so they can opt for more Amp Hours. So you can choose the option that suits your application the best. We have most models available in 24Ah, 30Ah, 40Ah, 60Ah and 80Ah.

Group U1

Available in 20Ah


20 Amp Hours

925 Cranking Amps

7.25 lbs



  First Battery with WIRELESS Built-In Jump-Starting! Wireless Keyfob Remote actuated Emergency Jump Starting. So you won't be stranded by a dead battery ever again!

  FULL Battery Management System (BMS) including Over-Discharge, Over-Charge, Short Circuit, Thermal Protections and Cell Balancing.

  RE-START TECHNOLOGY: The RE-START Battery has self-restarting capabilities. It intelligently monitors its status and if it senses over-discharge it will put itself into a sleep mode, yet saves enough energy to allow you to RE-START your vehicle. Simply press the Wireless Keyfob.

  OEM FITMENT: Exact Lead/Acid Replacement sizes. No additional modifications or trays necessary to install.

  LONGER LIFE: 2x to 3x the lifecycle of lead/acid and other Lithium batteries due to full Battery Management system.

   HIGH POWER: Up to 3x the Cranking Amps of similar sized lead/acid battery. Better Starting and higher voltage at start-up.

  ULTRA LIGHTWEIGHT: The Antigravity RE-START Battery can be as much as 70% lighter than the Lead/Acid equivalent. This equates to roughly 25-55 lbs of instant weight-loss just by changing out the battery! That makes the Antigravity Lithium-Ion Battery the most cost-effective weight-loss product hands-down, while offering better starting, handling and braking! A real performance value!

  LOW SELF-DISCHARGE: The RE-START Battery does not self-discharge like Lead/Acid Batteries. It offers a longer storage time provided there are not excessive Parasitic Drains on the battery.

  DURABILITY AND CAR SAFE: Much more resilient to vibration than Lead/Acid. Incredibly shock and vibration resistant; no liquids or acid inside to spill or drain out. Will not release dangerous Hydrogen while Charging and will not leak liquids that are damaging to your finish or chassis such as acid.

  ENVIRONMENTALLY SAFER BATTERY: No Acid or Heavy Metals such as Lead, Cadmium, or Mercury. Always remember to Recycle your batteries responsibly!

Proposition 65 Warning

WARNING: Cancer and Reproductive Harm –

Additional information
Weight 8 lbs
Dimensions 10 × 7.25 × 8 in
Product Weight

7.25 lbs

Product Size

7.75 x 5.2 x 7.3 in (mm:197x132x186)

Amp Hours

20 Ah

Cranking Amps


Nominal Voltage


Low Voltage Cut-Off


Positive Terminal Location

LEFT side, RIGHT side

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