Jerry, not sure where your charger would be. I've updated many Hi Los and have seen them all over the place. Mostly stowed up front, streetside. (to save wire, they are usually near the power cord). Have seen then in the bath cabinet and under the dinette seat next to the heater. Most are in the 8" X 10" X 3" size, although even this varies. All have many wires leading to it, so look for a bundle and follow it. Also suggest you get a good multi-meter, and unplug shore power, wait a while, check batt voltage-- plug in shore and retest. Voltage SHOULD increase, maybe as high as 13.6- 13.8v.
Tree