Has anyone tried the Battery Grip for Pentax K100D

[Rick@HRHD]

While searching around I found this Battery Grip for the Pentax K100D
What concerns me is it takes the 7.2 Li-ion Batteries and the K100D is powered with 6.5 volts

It has already been stated using Rechargable CRV-3 Cartridges will
cause problems with the camera

I do not see these in any stores or listed in the US
only a direct order fron China ..Company name is OwnUser

 

[Rick@HRHD]

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