Battery compatible with Crosscall BL 651 A with Li-Ion 3.7 V 1100 mAh: Amazon.co.uk: Electronics & Photo
GND 3.85V 3500mAh/13.475Wh LPN385350 Replacement Battery For CROSSCALL TREKKER X3 Built in Li ion bateria Li Polymer Batterie|Mobile Phone Batteries| - AliExpress