... 4.long cycle 18650 3.6V rechargeable Li-ion LiMN2O4 battery 1.high energy 2.military battery quality 3.CE/UL approved 4. ... C Features:1. High operation voltage, Li-ion LiMN2O4 batteries product 3.6 volts.2. High energy density.3. Long cycle life, more than ... level of safety, vision Lithium ion batteries catch no fire and cause no explosion in breaking experiment, with acupuncture, smash, drop, ...