AG-801 Antigravity Battery Small Case

Antigravity AG-801 Lithium Battery

5 out of 5 based on 8 customer ratings
(8 customer reviews)


The Antigravity Batteries AG-801 8-Cell Motorsports battery is one of the most popular models. It is an extremely powerful battery in a small package. 240 Cranking Amps. 9 Amp Hours (PB Eq).

Only 24 left in stock (also available on backorder)

SKU: AG-801 Category: Tag:


Small Case Lithium Battery

At a very small 4.25″ Length x 2.25″ Depth and 3.75″ Height (to the top of the terminals) this battery offers extreme power in the most compact size in Lithium Motorsport batteries. This battery is best used for applications where extreme weight loss and ultra compact size are desired and can be used for bikes from 600cc street use and 1200cc race use.


  • Adhesive-Backed Foam Included for EASY INSTALLATION.
  • Most Compact of Lithium Motorsports Batteries available.
  • Ultra-Lightweight and High-Power Lithium-Ion Motorsport Battery.
  • 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).
  • Built in the USA to high quality standards.
  • Large all-brass terminal design.
  • Waterproof (Not intended for jetski use).
  • 3-Year Warranty (view our Warranty page for details).

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 Batteries 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.)
Antigravity Battery Series
Download Specs
Antigravity Lithium Batteries Specs Comparison
Antigravity Batteries Specs Comparison
Additional Information
Weight 3 lbs
Dimensions 5 x 6 x 4 in
Product Weight

1.56 lbs

Product Size

4.25″ x 2.25″ x 3.75″ (mm: 110x57x95)

Cranking Amps


Amp Hours (Pb Eq)


Reviews (8)

8 reviews for Antigravity AG-801 Lithium Battery

  1. 5 out of 5


    We do a lot of riding for work and we’ve never been let down with an AntiGravity Battery. Love how little the small case ones are, too. Mount em any which way and still never have to replace one. Best money I’ve spent in awhile

  2. 5 out of 5


    Picked up this battery for my 500 exc after the stocker went kaput. I am really really impressed so far. The thing is so light and so compact! It fits great with the adhesive foam attached to it and cranks my bike like its brand new. Can’t say that it’s cheap but it really does blow away the stock battery.

  3. 5 out of 5


    I have a 1981 Honda CX500 cafe racer. It had a 4 cell when I got it, but I fried it with the wrong charger (my fault). I replaced it with the 8 cell (and proper charger), I couldn’t be more satisfied. It packs a PUNCH and starts that bike almost instantaneously. Definitely will recommend this to others and I will be a repeat customer when I need another battery!

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