While the debate goes on about the "one for all" battery or not, in your specific circumstance I'd recommend against it. One of the few gripes about the Zenoah G-20 is the comparitive high current drain of the stock ignition. Pretty much every review I've read on the G-20 has mentioned the high draw compared to pretty much anything out there. Not bad, it runs great.... just that the ignition is "thirsty". Also, the instructions for the G-20 are very clear not to run anything but a 4.8V ignition battery - what's the output voltage of the devices mentioned above, and are they adjustable if higher than 4.8-5.0V?

Even with the electronic 'gadget' in there to isolate any 'noise' from the rest of the system, all of that current draw from the ignition is still going through your receiver. Can it take it... probably. Is it a risk that I would take...... no. Especially in a 2.4GHz system drop the voltage a little low and you get a reboot. Ohm's law being what it is, that higher current draw could accomplish just that.

Just my 2-cents worth.....

BJH