CR123 3v and 3.7V

Hi guys,
i have a Pulsion 230L that came with pulsion CR123 battery.
i looked on ebay to purchase some battery and found some cheap ones that were rechargable.


I bought them and a charger and put these in my flashlight. I light it up and notice that the led were very bright and was turning blue.
So i turn it off and take a look at the battery.

The pulsion battery are 3V and the one i bought on ebay are 3.7V. It’s the first time i see battery with the same number having different voltage…
I guess i can’t use them in my flashlight?

The flashlight is still working but it looks less bright but i don’t know if it’s because my battery are getting low or if i damaged the led. May i have damage the led even if it still working?

Also searching on the forum i saw that rcr123 are recharble while cr123 are not. Mine are cr123 but was sold as rechargeable… (there is number16340 too)
Thank you!

The 16340 is a rechargeable battery with nominal voltage of 3.7v. When it is charged it will be 4.2v, which is why your light suddenly got brighter.

I don’t know anything about your Pulsion light, but suspect that the higher voltage may not have agreed with it :frowning:

Have a look at the battery university pages on li-ion cells. Nasty things if not treated well.

I have a night scope that uses a cr123. I really didn’t want to have to deal with disposables so I ordered a couple of 16340’s. Here they sit, I hesitate on using them because i know they charge up to 4.2V.
I am considering a liFePO4 16340, 3V, but they charge up to 3.6V. I wonder if that would be too much also.

CR123 and rechargeables is a mess, I have written a bit about it: https://budgetlightforum.com/t/-/20261

Thank you guys for your answer.

Does any cr123 will last about the same time?
2 original pulsion battery cost me around 12$ here (6$ each)
And i find some deal on ebay for other brand. that would cost me around 1.15$ each
http://www.ebay.ca/itm/20X-CR123A-Photo-Lithium-3V-Battery-DL123A-CR123-CR123-2-VL123a-K123-SF123-/310814046858?pt=Batteries_Chargers&hash=item485df5fa8a&\_uhb=1