EFLB1501S25 E-Flite 3.7V 150mAh 1S 25C LiPo Battery Pack for Blade mSR X.

Type: LiPo
Capacity: 150mAh
Voltage: 3.7V
Weight: 0.14 oz (4.15 g)
Configuration: 1S
Length: 1.47 in (37.5mm)
Width: 0.48 in (12.2mm)
Height: 0.22 in (5.5mm)
Maximum Continuous Discharge : 25C
Maximum Continuous Current : 3.75A