The iPhone eats battery power. The more you use it the more it eats. As a result, the more you use it the unhappier you get when it dies.
So I picked up this 1900mAh external battery and it was a great investment.
I keep it in my bag and it’s great when I need it. It’s not just powering your phone, it’s charging it! So once you remove it from the phone, it’s been charging your phone in the meantime.
Honestly, it doesn’t snap on very well, so it’ll fall off if you place it in a jacket or suit pocket and aren’t careful, but it won’t fall off if you’re using it for most non-gaming applications. It seems to fits well with my Seidio case (review).
For $14 (at Amazon), this is the best stocking stuffer you could get the iPhone enthusiast in your life (or iPod Touch or any iPod device I guess); if only it came in colors!
It always seems to have a charge whenever I need it. Although it’s rare more than a few weeks go by when I need it.
It you plug in the battery into a charger and the iPhone into the battery it’ll charge both. This brings me to my biggest complaint: I wish that when it was on the phone and plugged into the sync cable it’d charge both devices and pass through the data so I could sync at the same time.
This works with the current Amazon bonus of $5 worth of MP3 downloads with purchase (I think this is good only once per cart, not for multiple items in the same cart).