keep in mind that within a couple of weeks or so of using it, you will probably have to rig it to work. The battery drops in and the pressure of the flip top when closed presses it down to activate charging.
After a bit of use, the lid seems to loosen up and does not apply the appropriate amount of pressure to press the batt down far enough to initiate charging.
It is an easy fix but can be troublesome. You can tape a piece of paper in the lid to push the batt down or just put something in it above the batt so when the lid closes it pushes the batt down. Pain it the .... but it works.
I still use my pcc everyday and would be lost without it. It has this one simple problem but other than that it works like a charm. If you have a 510 it is an absolute must have.