only bought this because i did not know the streamlight package i bought came with second battery. so now i have three for my light.was glad to see it was factory battery not some cheap after market one. i read many reviews from other sellers that were sending out cheap after market replacements and not the factory backup batterys.
Pros: it is actually factory battery not after market
This review was written in the old system and had content requirements that are different than reviews written today.