Have a Lowrance Mark 5x that I have installed on my Nitro bass boat and I was curious if the unit works better at higher voltages or does it work best at 12-13 volts? Screen reads that I am running around 12.5 to 12.8 volts, but also noticed that the Manual says that it can take anywhere from 10 to 17 volts. I have read that bad readings can occur if the voltages drop too low, so was not sure what effect this would have if I upped the volts to say 15 or 16 via a battery pack. Have finally got it mounted in a good place and everything is looking decent, but not looking the way that I have seen on the net and such. If higher volts do indeed help performance, I am just looking to get what I can out of the unit. Any help would be greatly appreciated. Thanks