Model: 3.7v AAA Size ICR10440 Battery
Diameter:0.41 inch*Height:1.75inch ,they can't replaced the 18*65mm battery
Do NOT use these batteries in electrical devices that require 1.5V batteries.
More than 2000 times Long cycle life,bring you high quality experience.
Battery appliations: Solar light , Flashlight,headlamp,lantern,LED light,weapon light.