Black & Decker CPI100B 100 Watt Laptop Power To Go Cordless AC/USB Power Supply

Watch Video Here: http://www.amazon.com/review/R2TQU4OIRO3P9E Although the packaging states "powers and re-charges" and shows a picture of a laptop along phones, ipods, and clearly states "Laptops and more" on front of package, this device will not power laptops.

The word "laptop" in the product description may be deceptive. This unit died when attached to a small laptop. It is able to partially charge an iPod through one of two USB ports, after long periods of time charging itself. A year ago, I purchased a Black & Decker car starting batter pack that also was DOA. Obviously, I'm avoiding this brand from now on.

Amazon, the packaging, and the Black and Decker website all three lead one to believe that this is designed for powering laptops. The Amazon site can be fairly interpreted to imply that it will power a laptop for 9 hours. Of course this is nonsense that anyone understanding the meaning of 4000mAh will spot immediately. Unfortunately many have been mislead. I knew that I wouldn't get nine hours but I'm not getting anywhere near 4000mAh out of mine either. It works well and is handy but the battery power useable for 120V is closer to 2000mAh. I can't reliably watch an entire DVD on a portable DVD player (no internal battery). The batteries in the pack loose their charge just sitting in storage at a very fast rate. You want to be sure you leave it plugged in until the last possible minute.
For those looking to power their laptop, you'd be better looking to get one of the $250 to $400 lithium based battery packs that is shaped like a laptop. That's what I'm doing now.

The Black & Decker power supply works great. Just what i needed as I am often without power when working on my computer.

It appears to charge itself, but it will only charge another device for about 5 minutes before dying. I need to return it. Do not recommend.