Protected, button top. Price includes storage case! Batteries are sold individually.
This is Panasonic's highest discharge capable 18650 cell with a high-quality protection circuit.The protection circuit consists of a Seiko IC and AO8814 MOSFETs which are widely regarded to be the highest quality available.
Panasonic rates it for up to a 10A discharge but the protection circuit will cut off at around 7.5A; if you need to draw more current than this take a look at the unprotected version. It is a good compromise between IMR and regular LiCo cells, offering lower internal resistance and higher discharge rate capabilities and higher capacity than IMR. This is a popular cell for high drain XM-L & XM-L2 lights because it's lower internal resistance allows these high forward voltage LEDs to remain brighter longer.
Manufacturer Cell Specifications:
These cells, like all lithium and IMR cells, should not be discharged below 2.5 volts.