Topak Power Technology Co.,Ltd is one of the leading China 3.7v lithium ion battery manufacturers and suppliers with best China 3.7v lithium ion battery, 3.7v lithium ion cylindrical battery pack, 3.7v li-ion battery cylindrical pack, 3.7v lipo battery, lithium polymer cell factory, welcome to wholesale products from us. Application: Blue-tooth, GPS, Mobile phone, LED Lights, Consumer electrica, Household electrical, Digital Products, Toys, Medical equipments, Personal Care, Backup Power, Military Products, and other fields... 3.7V Lithium ion Battery Packs Below are the partial model list of our mass-produced, if you need the different model, please contact us. We also provide OEM & ODM service at the same time. http://www.globallibattery.com