Yes that makes sense to me.I guess my problem was that I thought the volts had to be at or above what the battery was rated at....so,something with 30A and min of 12vdc would do....take a look at these specs and tell me if you think this would be ok for the:

Features:

Perfect for Home, Shop and Hobbyist

Built-in Cooling Fan

Input: 115V AC, 60Hz, 500 Watts

Output: 6~15V DC(Adjustable)

22 AMP Constant/25 AMP Surge

Powers 6~15V DC Devices such as Cellular Phones, CB Radios, Scanners, HAM Radios, Autosound Systems, etc.

Screw Terminal Connectors

Crowbar Over Voltage Protection

Short Circuit & Thermal Protection

Fuse Protected

LED Condition Indicators

3 Prong Grounded AC Plug

Heavy Duty Cabinet & Heatsink with Anti-Skid Rubber Feet

Electronic Overload Protection w/Auto Reset

Dimensions: 11.81''L x 9.05''W x 7.08''H

1 Year Manufacturer Warranty