Description: Compatible with: DOOGEE X5 and DOOGEE X5 Pro smartphone Very suitable for your mobile phone, can solve the problem of mobile phone suddenly without electricity for you. Ii is the best choice for back-up power. Type: Li-Ion Output Voltage: 3.7V Charging voltage limit: 4.2V Capacity: 2400mAh Package Included: 1 x 2400mAh Battery for DOOGEE X5 X5 Pro