201673 Model:LA4000-1S-8 Quantity:1 piece(s) per pack Color:Black Material:Li-ion battery Compatible Model:No Battery Type:Li-ion polymer Voltage:3.7 V Marked Capacity:4400 mAh Actual Capacity:4000 mAh Other Feature:Provide power for WFLY 7-CH remote controller transmitter， can replace 4 x AA batteries. Durable use， long life. Packing List:1 x Battery Dimensions: 4.13 in x 1.10 in x 0.51 in (10.5 cm x 2.8 cm x 1.3 cm) Weight: 2.82 oz (80 g)