Antigravity AG-801 Lithium Battery

(8 customer reviews)


The Antigravity Batteries AG-801 Lithium 8-Cell Motorsports battery is one of the most popular models. It is an extremely lightweight powerful battery in a small package.

  • Small Case format
  • 4.375 x 2.37 x 3.75 inches (LxWxH)
  • 240 Cranking Amps
  • 11 Amp Hours (Pb Eq)/ 5.5Ah (Actual)
  • 1.56 lbs

In stock (can be backordered)

UPC: 639713372700 SKU: AG-801 Category:

Antigravity AG-801

Small Case Lithium 12v Powersports Battery

At a very small 4.375 x 2.37 x 3.75 inches (LxWxH to top of terminals) this lightweight motorcycle battery offers extreme power in the most compact size in Lithium Motorsport batteries. The Antigravity AG801 weighs only 1.56 lbs and is best used for applications where extreme weight loss and ultra compact size are desired. The loss of large amounts of weight allows for faster acceleration, shorter braking distances, better overall handling and even mileage improvements – all beneficial for the everyday rider and racer. The AG-801 Lithium battery can be used for bikes from 600cc street use and 1200cc race use.

Antigravity AG-801 High-Power Lightweight Lithium Battery

AG-801 Features

  • Ultra-Lightweight and High-Power Lithium-Ion Motorsport Battery.
  • Most Compact of Lithium Motorsports Batteries available (great for racers and custom builders).
  • Adhesive-Backed Foam Included for EASY INSTALLATION.
  • Can hold a charge up to a year provided there are no “Parasitic Drains” (accessories that draw power when bike is off (i.e. alarms, ECUs, iPods, GPS, heated grips, etc).
  • Large all-brass terminal design.
  • Can be installed in any orientation.
  • No highly toxic materials like Acids or Lead.
  • No fluids to leak and damage the vehicle.
  • 3-Year Warranty (view our Warranty page for details).

AG-801 Best Uses

  • Capable of every day use in bikes up to 750cc.
  • Great for use in all enduro bikes used for trail riding up to 750cc.
  • Race use for Enduro and MX electric start bikes up to 1000cc.
  • Race and Track Day use in motors up to 1200cc. (High Performance motors should use Antigravity Battery AG-1201.)
  • Custom builds like cafe racers or small bore customs up to 800cc. (Please note if you use older classic bikes from mid 1980s and earlier you should update the charging systems to a modern voltage regulator.)
  • Note: there is no BMS in the SMALL CASE Batteries, only Balance Charging. They are for closed course use only.

Not for use in Passenger Cars or Street use Automobiles.
Not for use in PWC (Personal Watercraft).

Use only Lithium specific Motorsport Chargers to charge this battery! (No lead/acid chargers.) How to Choose a Charger

From Everyday Riders to Pro Racers & Teams

The Monster Energy Kawasaki USA and Europe SX/MX/MXGP teams, as well as many other top teams use Antigravity Batteries.

Antigravity Battery Users: Monster Energy Kawasaki Team
Monster Energy Kawasaki Team
Antigravity Battery Users: Star Racing Yamaha Team 2019
Star Racing Yamaha Team
Antigravity Battery Users: Monster Energy Kawasaki Europe Team
Monster Energy Kawasaki Europe Team

Small Case Comparison

Compare Antigravity Small Case models - the smallest, lightest, most Powerful lithium motorsports batteries available. (on mobile, swipe to see all specs)

Model Price Cranking Amps Amp Hours Size Weight
AG-1601 $289.99 480 22 Ah (PbEq)/11 Ah (Actual) 4.5" x 3.25" x 5.25" 3.18 lbs
AG-1201 $219.99 360 16 Ah (PbEq)/ 8Ah (Actual) 4.5" x 3.25" x 4.25" 2.25 lbs
AG-801 $179.99 240 11 Ah (PbEq)/ 5.5Ah (Actual) 4.375" x 2.37" x 3.75" 1.56 lbs
AG-401 $119.99 120 6 Ah (PbEq)/ 2.6Ah (Actual) 4.375" x 1.37" x 3.75" 15.2 oz
SC-1 (Race Only) $119.99 150 5 Ah (PbEq)/ 2.2Ah (Actual) 4.375" x 1.37" x 3.75" 15.2 oz

Proposition 65 Warning

WARNING: Cancer and Reproductive Harm –

Additional information
Weight 3 lbs
Dimensions 5 × 6 × 4 in
Product Weight

1.56 lbs

Product Size

4.375″ x 2.37″ x 3.75″ (mm: 111x60x95)

Cranking Amps


Amp Hours (Pb Eq)


Reviews (8)

8 reviews for Antigravity AG-801 Lithium Battery

  1. Mike

    I installed this battery on a Honda XR650L, after reading several “DIY” articles, on how to replace the original “brick” that comes standard on the Honda. Once installed, the battery worked like a treat. No issues at all, and the bike starts just as good as the original. Weight savings are significant. Very happy !!

  2. Shank

    Bought one of the 12 cell’s a few years ago for my custom chopper and have never had a problem with it. I went through 5 Odyssey batteries before it and the vibration killed them. This one has never let me down. I needed a battery for my #BikerLive bike build and this was my only choice. Best bang for your buck!

  3. Anonymous

    We are using this type for our Formula Student rececer. We have engine from Honda CB 600 F (nown as Hornet), si it is the best solution for us. Also we like the size and weight of the battery,

  4. Gregory Birch

    My DRZ fired up like a rocket thanks to this battery. Thank you!

  5. Dan Forbes

    These little batteries pack a punch….doubt that I will ever go back to a traditional acid battery again…

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