Is there any way to improve battery life when using Garmin XT?

[Guest X-Ray A4T]

I have found that Garmin XT really chews the battery and the phone gets really hot. I get around 1 hour of use before I would need to charge. Using XCPUScaler and dropping the CPU to 100MHz makes the phone run cooler and I get about 1.5-2 hours of use. Has anyone managed to get a longer use out of a GPS program? I have one of those FM transmitters to listen to music while driving but I cannot charge at the same time :rolleyes: