I bought my IMP500 several months ago and my whole family loves the product! The IMP500 can power many different products such as Nintendo DS Lite, Gameboy, or a Ipod Touch to name a few. This is a very long life solid power pack. It usually lasts for days of intermittent use without needing to be recharged. I share the power pack with my son who uses it for his Nintendo DS Lite and his IPod Touch and my wife who uses it for her phone. This is a very versatile product with a lot of power in it. The indicator lights tell you how much juice is left and flash when you recharge the power pack. The on/off switch insures you don't accidentally discharge the power pack. I have no complaints about this product and would highly recommend it.