Battery upgrade for Olight SR51
"My Olight SR51 only came with the battery magazine for CR123 batteries, so I wanted to get this magazine to be able to use 18650 batteries. The magazine has the usual springs for the negative end of the battery, so even without any or - markings, it's easy to tell how to insert the batteries. The magazine fits perfectly inside, no rattling or loose connections. I was able to use both protected and unprotected batteries. I only have button top batteries, so I don't know if flat top batteries will work."



