Involvement:General (knows how to use it) - Ownership:1 day to 1 week
Is very useful to have a usb battery charger, because working in the office, you nearly allways have a computer near, so for charging AAA and AA batteries, for mp3, wireless mouse...
Good for use with an external usb charger to have another 220V batt charger
In some usb ports (front ones in computers) the charger is a little bit big so it can not fit. Just use the back ports
The device for changing AA to AAA batteries (change of size for the contacts) is not very intuitive
Very useful, tiny and resistant, godd value gadget
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