Home > Consumer Reviews > Black & Decker CP120B 20-Watt Power Backup Battery Pack

i needed a battery back up just in case if i am unable to plug in my wall charger. i tested this unit several times after fully charging the back up unit and it will charge my cell phone for 20 minutes and then it will run out of energy.

the price dropped dramatically here on amazon so i am guessing it is being discontinued or it is on clearance.
i am going to look for another back up unit

I bought on of these for $5 in the bargain aisle of wal mart, I bought it just for kicks to see if it would charge my Zune, I was happy to see that it did start to charge my zune and was very happy at that point, thinking that I had finally found a USB charger for my wonderful Zune, Turns out there are 2 major problems here, this unit it way to heavy to carry around on only charged my Zune for about 5 - 10 minutes. I figured that I could always take the whole unit apart and wire it up to the 14.7V system of a car, nope, the battery pack inside is only a 9.6V pack, bad things could happen if you hooked it to 14.7v.

For an 1800Mha pack, it should give more than a 10 minute charge.

It's a little bigger and bulkier than an SNES game cartridge. It's about the weight of a shoe. I tested it on my Zune 30 and my friend's iTouch 8gb. It didn't charge the iTouch at all, so don't count on that. It charged my Zune, but took pretty much two of these using the USB charging outlet to charge it from completely empty (non-functioning) to completely full (green battery icon). I plugged in my Zune AC wall charger into the pocket power AC outlet and had a little more success. It didn't quite take two. It didn't charge my laptop.

I gave it two stars based on the Amazon price. I got two for $15, and would give it three based on that. I guess I can only recommend this if you find two really cheap and you have a Zune.

I have had 3 of these now,1 was junk straight out of the box new, 1 is still working and I'm waiting for another replacement since the 1st replacement was bad too.

I haven't even removed this from the packaging - it's being returned.

This is not a pocket-anything, it's a large heavy brick. Definitely not something to 'slip in your purse'.

I'm giving it one star because of the misleading description.