Which is better for a KD 50mW?

Which set of CR2's are better for the Kai Domain Copper 50mW Green Laser Pointer (SKU.3304);
the DX Panasonic CR2 2-Pack (SKU.904), or the DX Ultrafire Rechargeable 3V CR2 800mAh (SKU.932)?
And are the Panasonic's rechargeable? I also planned on buying a DX charger (SKU.1236), but what spacers would I need, 1cm thick?
Sorry about all the questions, thanks for your help

Hi,

The Panasonics are primary and not rechargeable. I've posted what I use in this laser at this link:

http://www.laserpointerforums.com/forums/YaBB.pl?num=1202592237/11#11

Cheers, CC

I run mine from the rechargeable CR2's sold on kai (there was only one type at the time), no problems so far.

I charge them with a charger intended for CR123/18640s from deal extreme, using some folded aluminium foil as a spacer (crude but effective).

I use the DX ultrafire CR2 3volt cell. Works good for me.

Mike