3.7V 800mAh lipo Battery For Syma X5 X5C X5S X5SC 
X5HW X5HC X5SW M68 X300 X400 X
Voltage:3.7 V
Current quantity :800 mAh
Size: Length 44* width 25* high 9.8 (mm)

Line length:37 mm (Include plug)
Weight: 18g
Other information: 25C

Inclusion in the package:

1pcs 3.7V 800mAh Battery SM Plug

1pcs 3.7V 800mAh Battery JST Plug

1pcs 3.7V 800mAh Battery XH2.54 Plug

As  your  choose!!