So I thought I’d take a look at some extended batteries for my HTC Desire. The Desire battery life isn’t exactly great, but I can comfortably say it does a lot better than the majority of today’s smartphone, however they still dont compare to the 2000′s when a phone would comfortably last 2/3 days on normal usage (Nokia 3310 anyone?).
Anyways, on Friday I ordered this from eBay, and it arrived on Monday
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170614549831&clk_rvr_id=231704290653
2400mAh Power with Replacement Back Cover
Basically the original battery rating is 1400 mAh for the Desire, and my general understanding without getting all technical is that if i scrape a days usage out of a 1400 mAh battery, then if I was to get a 3200 mAh I should theoretically get over 2 days usage, right? Juicy.
Well, apparently the guys on the XDA Forums have managed 3-4 days out of it. So I looked on ebay, and the only good looking UK seller had 2400 mAh with proper labels and warranty, so to stay as safe as possible I got that one, which should still easily get me well over a day or so of usage.

Taken with a Blackberry Curve 8900, apoligies for the blurry cam
I will write a proper review of it after about a week of full usage (next Monday?) but on first use, I must say I am very impressed, no overheating at all and CLEAR difference in battery strength.
Last night (about 1am) I drained the battery down to 26%, the next late afternoon (today around 3:30pm) the battery was fully depleted, after continuous use of Spotify, a bit of browsing and a couple of phone calls, mad right?
Also to top it of I have over-clocked the CPU to 1.2ghz max and min 384ghz, and it still managed an easy full day of heavy usage.