... time discharge than others .ER17505M 2800mAh 3.6V lithium battery packsFeatures: 1.long time discharge 2.same price ... .Height (mm):50.5application: mobile electronic gifts, laptop, portable DVD, electric toys, military equipment, mobile phones, LED ... , point-of-sale, solar lights, etc. primary lithium battery LiSOCl2 battery Lithium thionyl chloride battery ER17505M A size 2800mah 3.6V power type