Originally Posted by
platgof
I thought I was having glitching issues, but the car battery went dead on me. I am still running 6.6 volts 3 weeks later on my radio, thanks NIZN batteries. Be careful on Ebay, some jerks are trying to charge like $166 dollars for a set of batteries and a charger. The real price is around $23. One seller is showing $20.42 for both.
All Radios I know have a circuit that shunts the voltage back down whatever the radio was designed for IE 6.6V This is specifically for fluctuations in the voltage when the pack is fully charged it might top out at 7.0 volts.
So IMO its useless to apply higher voltage than what it was designed for and in theory may burn up the circuit if it cant shunt the voltage it receives.
Also if you do decide to use the higher voltage batteries the voltage will stay at the higher voltage longer as it discharges that may be a good thing