If you own an iPhone, you probably know that the battery could be better. It’s gotten better with the new generation, but it could always be better. While you can’t buy an internal battery to lengthen the battery life on your iPhone 3GS, you can always purchase an external battery and take it with you when you need it. IMP500 A iPhone 3Gs External Battery is a cool power solution for iPhone 3GS that lets you get over 38 hours of extra movie time on the go.
IMP500 is a Lithium-Ion Polymer battery that not only adds extra hours of battery life to your iPhone, it also doesn’t require you to take a large accessory with you on the go. It’s very portable and doesn’t weight too much, so it’s much easier to take it around with you in airports, train stations, and so on.
I found IMP500 to be very solid and reliable. It adds over 180 hours of audio time, so if you are not using your iPhone to watch videos, you are going to get a plenty of play time on your iPhone. You can power up this battery through USB and use the same connection to charge up your iPhone as well. It also works with Blackberry and other cell phones as well. Great accessory to own for emergency situations.
