Antigravity AG401 4-Cell

by Antigravity

$209.95 AUD

The AG-401 battery, at a minuscule 4.25 x 1.25 x 3.75 inches (LxWxH to the top of the terminals), offers extreme power in the most compact size in Lithium Motorsport batteries. The AG-401 is best used for Performance applications where extreme weight loss and ultra compact size are desired. Can start inline 4-Cylinder motors up to 600cc for race use. This battery is also a favorite of custom builders who want the smallest battery to tuck out of the way.

  • 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.
  • Product Weight 1 lb (0.45kg)
  • Product Size 4.25″ x 1.25″ x 3.75″ (mm: 110x32x95
  • Cranking Amps 120
  • Amp Hours (Pb Eq) 6
Best Uses
Custom builds like cafe racers or small bore customs up to 350cc.
Race use for Enduro and MX electric start bikes up to 250cc. 
Race and Track Day use in inline 4 cylinder 600cc sport bikes 
(If you have a 250cc 2-stroke use the Antigravity Battery AG801)
(Honda CBR600 rider should use the Antigravity Battery: AG-801)

Please note if you use older classic bikes from mid 1980s and earlier you should update the charging systems to a modern voltage regulator; damaged voltage regulator can overcharge the battery and damage it.
KTM SX-F 250/350/450 require battery box modification to fit.
Not for use in Passenger Cars or Street use Automobiles.

Not for use in PWC (Personal Watercraft).


Join our rewards program and receive a $20 voucher. T&C's apply.


Free worldwide shipping with any purchase over $99. We're so sure you'll be 100% satisfied with your Cafe Racer Club purchase that items can be exchanged within 60 days. T&C's apply.


For any questions or assistance please contact our customer service department at

Fast & Free

Free Australia & NZ shipping on ANY purchase. Free worldwide shipping with any purchase over $99AUD. Orders are dispatched within 24 hours so you get your stuff fast, very fast!

Verified & Secured

Cafe Racer Club is an Australian registered business. Our checkout is verified and secured with bank level encryption so you never have to worry about your money.

Free Returns

Cafe Racer Club guarantees unbeatable quality and most items are backed up by our extended 30 day free returns policy. We even cover return shipping for RacerClub Members, so join today!