These 18650 batteries I am 100% satisfied !! By significantly raised Button Top good function in almost all devices is given (eg flashlights), which are intended for 18650 and the "stacking" of the battery is also possible without any problems. These batteries have even a bit more capacity than specified. They emit a high current for a very long time. I use these batteries mainly in underwater lights. Compared to low batteries "Ultra Fire" this Panasonic batteries deliver more than 4x as long usable electricity. In one of my dive lights it means for example that the "Ultra Fire" would not even hold out with only 35Minuten term a night dive, while this Panasonic battery in the same lamp loose 2 to 2.5 hours orderly supplies electricity. Of course you should this unprotected battery model only in devices with built-in protective electronics use do not accidentally discharged too deeply about the batteries. 100% Kaufemfehlung !!! :-)
