... 18650 with the capacity of 1300mah ,650mah ,1000mah,1100mah 1800mah 2000mah, 2200mah, 2400mah, 2600mah. Usage / Application :Backup power , Tracking system prodcut , Portable ... 1300mah ,650mah ,1000mah,1100mah 1800mah to 2600mah. such s 1800mah, 2000mah, 2200mah, 2400mah, 2600mah etc.Usage / Application :Backup power , Tracking system prodcut ...