minimalmac:

Anyone who owns an iPhone knows that, if you use it as intended, you will need to charge the battery far more often than any other device you have grown accustomed to. This is especially true as it gets older. Mine is a bit over a year old now and on a good day I drain it before bedtime.

There are a few battery pack cases you can get but they add additional bulk. The other alternative is a battery backup pack, designed to plug into the bottom and recharge your iPhone. There are a bunch of options here too, but I went with the Monoprice iPhone Battery Pack.

The price and performance really can’t be beat. For only $14.50, you get a pack that can fully charge your iPhone almost two times without needing to be recharged itself. A real steal. This has been quite a handy little item to have around and especially good on trips if you watch a lot of video, use the GPS, or any other battery draining task. And, as a bonus, it can also charge an iPod as well.

Hat tip to TUAW for the tip off on this.

It’s not the same deal for me though. The charger seems capricious in charging the iPhone and iPod Touch. It will charge for a few minutes and then just decide to stop charging.

Does anyone know why?