Home > Consumer Reviews > Black & Decker CPI20XB 20 Watt Power To Go Cordless AC/USB Power Supply

Looking at the three versions of this: 10W, 20W, 100W, I found the technical details on the B+D site helpful:

The 10W has a 700mAh battery, This Model # CPI20XB (the 20W) has a 2Ah battery, and the 100W a 4Ah battery. It looks like they are progressively heavier, but I can't find accurate figures on weight or dimensions.

Input - 8.4 VDC, 5.0A
Output - 115V AC 60Hz-20W for 5 minutes, 16W continuous
Battery - 2Ah, NiMH
USB - 5V DC (350 mA)
- *Approximate talk time based on average results using commonly used cell phones. Results may vary depending on features/cell phone used.

November update - I ordered the product. One negative is that the power adapter provided to charge it is only for 120V countries (the US, basically)... I wasn't able to put it through any significant use so far, but I will try to test out how well it recharges electronics and how well the battery holds.

For a on-the-go, fit in your pocket power source this cant be beat. I dont know any portable power sources for this low price that give you an indicator bar (the kind you'd see on a cell phone display). This works great and Im glad I bought it.

I bought this item on clearance through a local retailer. A the time I thought I was getting a pretty good deal, but I now realize that it was a reason the store was getting rid of them. I am a college, and I use my mp3 player which has an audio recorder to record class lectures. However, the battery doesn't last very long and I was excited by the prospect of having an extended power supply.

My excitement ended with my first attempt to use the product. I charged the unit upon purchasing it a couple weeks before classes started. The evening before my first class I checked the Black & Decker power supply before packing in in my bookbag, and it had no power. I thought that it wasn't unreasonable if the charge had dissipated over two weeks and plugged it into the wall and lest it overnight. The next morning I brought it to class with me. Three hours later when my audio recorder died I plugged it into the battery and there was not enough charge to even power the unit up.

After a couple more attempts to charge the unit I realized that it was completely incapable of holding any charge for any length of time.

I would highly recommend looking elsewhere for portable power.

I bought 2 of the 20W models for a project and was very disappointed. In both units, the wall charger that came with it did not function (one worked for about 2 minutes before pooping out). I used a different charger - I was careful to match the voltage and charge settings. Both units did start charging. After a long 36 hours they finally showed a full charge. When I tried to use them with a 10W device, the power only lasted for about 10 minutes. A real waste. Not that expensive, but I would skip this unit if you have a choice.

It takes too long to charge and doesn't hold the charge. I've read a lot of negative reviews about it but bought it anyways. Shouldn't.