Battery booster for iPhone 4

Just wondering if anyone has seen a battery booster that is compatible with the iPhone 4? Had a Mophie Juice pack for my 3G and loved it...

Is your battery draining real fast? I really don't think you'll need a battery booster, my iPhone 4 lasts me a day in a half with somewhat heavy use in texting, calling, games, checking my emails, and so forth.

But I haven't heard of any juice pack as of yet. Personally I'd just turn your notifications off, and your location based services. I have everything turned off, and just check it manually, helps significantly with battery performance.

I'll try some of the above things..it doesn't drain very fast but I'm not sure it'll get me through the day from 7am to about 11pm.

Yes, those things will help a lot. Just turn on your location services when you need them. Personally if I am out and about I always turn 3G off and just use EDGE. The call quality is the same and puts less power consumption than 3G, and turn 3G on when I need it.

That's just me.

i think you will have to change the battery .