Mugen Power 5000mAh Extended Battery For iPAQ HX47 series, thick
- Product Review (submitted on May 5, 2012):
Lasts a long, long time even with bluetooth on - 8 to 10 hours continuous use, maybe more ?
Only had it a month so don't know how long it's going to last.
It's fairly weighty so that's something to bear in mind, but it's to be expected.