The EVE ER18505M is a rechargeable lithium ion battery manufactured by the company Eve Energy. It is a 3.6V, 2700mAh battery, able to provide up to 9.7Wh of energy. It is designed to be used in a variety of applications, including industrial, toys, audio players, GPS and medical electronic products. The battery has a cycle life of 1000 times and a working temperature of -20? - 70?. It features built-in protection against over-charging and over-discharging, and offers a high energy density, long service life and wide temperature range.