Originally Posted by
dirtybird
I have one of Ralphs G62s. The case back does not look like one of his.
A simple diode is a lot easier and more reliable than a regulator. A123's are not at 7.2 once they are connected to a load. They quickly drop to 6.6V . A silicon diode drops 0.6 V in the forward conductive direction. That puts you right at 6.0V.
A regulator has many active parts than can fail. Plus it ads to the internal resistance of the battery.
To the best of my knowledge Ralph is the only one who used an RCA type jack for input power. Most guys will go regulator as it is a plug and play solution. If you want to continue to suggest your diode setup you may want to publish a schematic. Giving guys a supplier, part number and informing them that a diode is polarized may help your suggestion along.