Try then Rikaline GPS-6033 which can be found on eBay for 50-70. I had never heard of this brand or even know how reputable it is, but their reciever has an auto function, which, when attached to the car via the included charger, and set on "auto" mode, it will turn on and off automatically with your car so you never have to worry about battery.
I also wanted this feature so I took a chance on the reciever and have been quite happy with is so far.
It also comes with magenteic mounts so you can keep the reciever secure in your car.
HTC One XL - King Kang Build 1
Samsung Galaxy Tab 2 7.0 - CM9
Android: HTC Sensation, HTC Desire Z
WinMo: Sony Xperia X1, HTC Kaiser, HTC Wizard, Motorola MPX220