Unprotected, button top. Price includes storage cases! Batteries are sold individually.
This is a great "medium drain" cell, with a 15A continuous discharge rating and 3000mAh capacity. I put "medium drain" in quotes because in the direct-drive single emitter lights this is a top notch performer!
Manufacturer Cell Specifications:
These cells, like all lithium and IMR cells, should not be discharged below 2.5 volts.