the 8 cell that would work with most of our applications.

Dimensions (Standard): 4.5" (L) x 2.5" (W) x 4.25" (H)
Weight: 768 grams (1.7 lb)
Voltage (Charged): 13.6V
Amperage: 15 Pb-eq A/H
Pulse Cranking Amps: 275 CCA
Operating Environment: -18°C (0°F) to 60°C (140°F)
Typical Applications: 1000cc and under multi-cylinder motorcycles and 550cc and under singles cylinder dirt bikes, scooters, and ATV’s.

They also claim
No trickle charger required, loses only 10% of charge over a year of static use


more info can be found here.

http://www.ballisticparts.com/products/batteries/batteries.php