Did a little digging for information on CR123A for my baby tactical light. The poor thing has traveled the global since 2004. It is becoming silver from wear and tear.
Anyway, I came across the following site that discusses nothing but candle power
From reading some of the threads, they get into the weeds on the specific candle power usage.
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The following site has some serious specials, do not know the trust worthy of the site below: