This group sees as a recurring post people looking to get more
electrical power.

To go from a 7ah standard gel cell to the same battery with 12 amp hours
would be a 70% increase in power, but the key will be manufacturers who
will modify their existing battery holders so they will accept a wider
battery such as the one linked below.

http://www.apexbattery.com/powersoni...s-battery.html