I have a Verizon Treo 700p with the stock battery that it comes with. I am familiar with the Seidio extended batteries but their largest battery goes up to 3200 mah. I believe that the stock battery is 1800 mah. Anyway I was looking to see if there was a battery that is double the capacity as the stock battery so I found this:
Mobi Products Super Extended 3600 mAh Lithium Ion Battery

http://www.wirelessground.com/tr6507007070.html

It is $90 and it is double capacity and you have to buy a different battery door too.

Does anyone who owns a treo 650 or 700 use this battery and does it really have the battery capacity that it is advertised? Does that battery make the treo too unsightly thick?