Because my phone is for business, I typically need more power throughout the day than the stock battery can deliver. Being in construction, I am out in the field a lot making lots of calls, checking multiple email accounts, texting, using the web, etc. and don't have access to charge the battery when it gets low. The 4G Touch battery life is like most stock batteries I've used on other phones. I like using extended batteries, so I contacted Seidio to find out if they are going to make an extended battery for this phone. Here's the good news....