We use these super-small, super-light, yet super-powerful lithium batteries in nearly all our projects these days. Many models to choose from depending on your size restraints or power needs. The popular 16 cell battery shown measures only 4.5"x3.25"x5.25"H and weighs just 3LBS, yet it delivers 480 cranking amps - enough to turn over most performance V-Twins!
Call to discuss.