Antigravity Lithium Batteries

Powerful Lithium Upgrade for Cars, Motorcycles, and UTVs

Antigravity Batteries has changed the game by bringing high-performance Lithium-Ion technology to everyday drivers and enthusiasts alike. Whether you are looking to shave 40 pounds off your sports car’s weight or you need a reliable, compact battery for your custom motorcycle, Antigravity offers a solution that outlasts and outperforms traditional batteries.

Our selection covers everything from the popular "Small Case" batteries for custom builds to direct-fit "Group Size" replacements for modern vehicles like the H6/Group 48 and Group 35 models. These aren't just batteries; they are an investment in your vehicle's reliability and performance.

Industry-Leading Warranty Protection

Antigravity Batteries are synonymous with quality and durability. To protect your investment, Antigravity offers a robust warranty program based on the type of battery you purchase:

• Automotive Batteries: 5-Year Limited Warranty
• Powersport Batteries: 3-Year Limited Warranty (1 year for Race use)
• Deep Cycle Batteries: 10-Year Limited Warranty
• Micro-Starts & Accessories: 1-Year Limited Warranty

Important Note: To be eligible for a warranty claim, you must register your new battery or Micro-Start online at the Antigravity website within 30 days of purchase. Warranties are non-transferable and apply only to the original purchaser.

Why Choose Antigravity Lithium?

• Never Get Stranded: The patented RE-START feature monitors the battery's voltage. If it gets too low, the battery puts itself to "sleep" before it's empty, leaving enough energy for you to press a button and start your engine.
• Incredible Weight Savings: Replacing a standard 50-pound car battery with an Antigravity Lithium battery can drop your vehicle's weight by 30 to 40 pounds instantly.
• Longer Life: Lithium batteries can last up to 8–10 years—nearly double the lifespan of a standard battery—making them a smarter long-term value.
• Built-In Management: Every battery features an advanced Battery Management System (BMS) that protects against over-charging and over-discharging automatically.

Frequently Asked Questions

What is the "RE-START" feature?

RE-START is a built-in jump-starting system. If you accidentally leave your lights on and the battery drains, it will automatically shut itself off before it is completely dead. You simply press the "RE-START" button on top of the battery (or use the optional remote) to get enough power to start your engine and drive away.

How do I handle a warranty claim?

All warranty claims are handled directly by Antigravity Batteries to ensure you get expert technical support. If you believe your product has a manufacturing defect, do not return it to Battery Mart. Instead, visit the Antigravity Batteries website to fill out their official Warranty Claim Form.

Can I use my regular battery charger?

No. Lithium batteries require a specific type of charger that uses a different charging profile than standard lead-acid chargers. Using an old-style charger can damage the battery. We recommend using a dedicated Lithium charger, like the Antigravity 16V/5A model, to ensure your battery stays healthy.

Will an Antigravity battery fit my car or bike?

We carry direct-fit sizes for most common vehicles. For example, if your car uses a "Group 48" or "H6" battery, our Antigravity H6 model is a "drop-in" replacement that uses the same dimensions and terminals as your original battery. For custom bikes, our "Small Case" AG-801 or AG-1201 models are famous for being tiny yet powerful enough to start large engines.

Are lithium batteries safe for road use?

Yes. Antigravity uses Lithium Iron Phosphate (LiFePO4) technology, which is the most stable and safest lithium chemistry available for automotive use. They are designed to handle the vibration and heat of a high-performance engine bay or a rugged UTV environment.

How do I know which "Group" size I need?

You can find your current battery's "Group Size" (like Group 35, 24, or 48) on the label of the battery currently in your vehicle. If you aren't sure, you can search our site by your vehicle's year, make, and model, or give our experts a call for a guaranteed fit.