Why dont you just buy a second battery would be a lot cheaper and easier to carry around
Sent from my Desire HD using XDA App
I had 2 batteries for my previous phone, I can confirm it was a royal pain in the ass:
- keeping the spare one charged (I had a desktop charger that had a space for the spare battery, but it soon stopped working)
- having to take the battery out & reboot
Such is the design of the DHD that the less I have to open the plastic compartments, the better
It does also depend on what you want the extended usage for: I wanted to be able to record a GPS track for 5-6 hours at a time (mountain-biking), so stopping to change a battery, wait for reboot & then start the appropriate app took me 10 minutes once
Everyone's needs will be different, but for me at least, the 5000mah power pack is just right for me.