john from ottawa asks:
I have an Olight that uses four CR123A batteries. Do these batteries equal two 123 batteries? Would two 18650s be equal to the four CR123A used in my light?

Regarding the following product:
Nitecore NL1826 18650 2600mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Blister Pack
$13.00
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