Cant Find CR2 Protected Rechargeables!

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M3Tyler

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Sep 28, 2009
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So. Cal

Bogalu

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Thanks for all the help, although after seeing the poor mAh for the Cr2's I've decided to go with a chuck so I can get the Cr1's. So I suspose this thread can die out. Although I put up another saying I'm buying a chuck and that I need some vendor options for accessories if anyone has ideas for me then visit that thread. Thanks everyone.
 

youfillintheblank

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Nov 13, 2008
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Ontario, Canada
There was some discussion SOMEWHERE in this massive forum about the Ultrafire CR2 batteries from dealextreme, someone had tested them and discovered by their discharge rate that they are indeed LiFePO4 batteries but just aren't labelled as such. I've been using those for almost a year, I've bought 8 sets, 2 chargers, with 0 problems. The giveaway for LiFePO4 batts is that they are rated at 3 or 3.2 volts. Regular (regarded as unsafe) LiIons are always 3.7 volts. The chemistry of the LiFePO4 cells is what makes them run at a lower voltage, and makes for safer use. I've tested mine as well during their discharge cycle, and lo and behold, after the initial reading of 3.6 volts off the charger, 45-60 minutes later they read 3.2, EVERY time. I've even shorted them out (by accident) and nothing happened other than damage to the spring inside my unit.
 

M3Tyler

Senior Member
ECF Veteran
Sep 28, 2009
168
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So. Cal
There was some discussion SOMEWHERE in this massive forum about the Ultrafire CR2 batteries from dealextreme, someone had tested them and discovered by their discharge rate that they are indeed LiFePO4 batteries but just aren't labelled as such. I've been using those for almost a year, I've bought 8 sets, 2 chargers, with 0 problems. The giveaway for LiFePO4 batts is that they are rated at 3 or 3.2 volts. Regular (regarded as unsafe) LiIons are always 3.7 volts. The chemistry of the LiFePO4 cells is what makes them run at a lower voltage, and makes for safer use. I've tested mine as well during their discharge cycle, and lo and behold, after the initial reading of 3.6 volts off the charger, 45-60 minutes later they read 3.2, EVERY time. I've even shorted them out (by accident) and nothing happened other than damage to the spring inside my unit.

That was me. I posted graphs showing these DX CR2's do indeed appear to be LifePO4 chemistry, though it all fell on deaf ears. I suppose unless they are marked as LifePO4 on the sleeve, no one is buying what I had to say /shrug

Anyway, to the OP - I'm sure you'll be happy with the chuck. I've heard nothing but great things. Personally I want the smallest 6v PV myself, yet I want CR123a battery life along with! I want the best of both worlds I guess, damn it! :)
 

youfillintheblank

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Nov 13, 2008
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Ontario, Canada
I think I'm going to try getting hold of someone from Ultrafire, and see what they say. Maybe convince them to re-label these batteries for what they are. IT's really in their best interests.......if they care.:D

EDIT: Email sent to Ultrafire.

That was me. I posted graphs showing these DX CR2's do indeed appear to be LifePO4 chemistry, though it all fell on deaf ears. I suppose unless they are marked as LifePO4 on the sleeve, no one is buying what I had to say /shrug

Anyway, to the OP - I'm sure you'll be happy with the chuck. I've heard nothing but great things. Personally I want the smallest 6v PV myself, yet I want CR123a battery life along with! I want the best of both worlds I guess, damn it! :)
 
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