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.
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.
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.
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 – www.P65Warnings.ca.gov
otto@biltwellinc.com –
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
Anonymous –
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.
Daniel –
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!