The Antigravity Batteries AG-801 8-Cell Motorsports batteries is one of our most popular models. It is an extremely powerful battery in a small package. 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. AG-801 is best used for applications where extreme weight loss and ultra compact size are desired and can be used for bike from 600cc street use and 1200cc race use. ADHESIVE BACKED FOAM INCLUDED IN BOX FOR EASY INSTALLATION. Features Ultra-Lightweight and High Power Lithium Nano-Phosphate Motorsport Battery. Most Compact of Lithium Motorsports Batteries. Can hold a charge up to a year provided there are no “Parasitic Drains” (accessories that draw power when the bike is off.such as alarms, ECUs, iPods, GPS, heated grips, etc.) Built in the USA to high quality standards with unbreakable terminal design. 3-Year Warranty. Read our Warranty Details. Waterproof. Best Uses: Capable of every day use in bikes up to 550cc. Great for use in all Enduro bikes used for trail riding up to 550cc. Race use for Enduro and MX electric start bikes up to 800cc. Race and Track day use in motors up to 1200cc. (High Performance motors should use Antigravity Batteries AG1201.) 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.) Technical Details: 240 Cranking Amps – (Cranking Amps are the power the battery has) 9Ah (PB Eq) – (Amp Hours are the Capacity of a Battery)