There is no such thing as over-amping anything (on powering RC receivers). The system draws as much current as it needs.

The dual battery actually puts the batteries in parallel which keeps the voltage the same but makes AVAILABLE more current. Batteries in series adds voltage. Batteries in parallel adds current.. but only makes it available as draw requires. If it is a 500 ma (mili-amps or .5 amps) system, it will draw 500 ma no matter if there is 5 amps available.

An 1100 mah battery pack consists of four 1.2 volt 1100 mah NiMh or NiCd batteries wired in series. + to - to + to -. and so on, as in a flashlight with a pair of D cells back to back with the + pole of the back dry cell touching the - pole of the one in front of it. Series.

Parallel means that all the + poles are tied together with all the - poles tied together and the output wires are taken anywhere from the + and - poles.

A dual pack in parallel makes 4.8 volts with an available current of 2200 ma.

Maybe the drawing will explain better.

CGr.