Lipo Battery 2S 7.4V 3500MAH Lipo Battery for Jumper 
T16 T12 Open Source Multi-protocol 
Radio Transmitter battery
Jumper T16 T12 T18 RC Remote Controller Radiomaster TX16S 2S 7.4V 2000MAH 8C Lipo Battery JST Blance Connector OPENTX System
2000mah lipo Specifications:
Item No.:2000mah 7.4V 8C lipo battery
Voltage: 2Cell / 7.4v
Discharge:8C

Plug: 2S balance / JST plug

Size: 66*36*17mm

Weight: about 65g

Suitable for Jumper T16 T12 T18 Radiomaster TX16S RC transmitter
3500mah lipo Specifications:
Item No.:3500mah 7.4V 8C lipo battery
Voltage: 2Cell / 7.4v
Discharge:8C
Plug: 2S balance / Jst
Size:75*37*19MM
Weight: about 106g
Suitable for Jumper T16 T12 T18 Radiomaster TX16S RC transmitter
Packing list:
1pcs*2S 7.4V 3500MAH 8C lipo battery
or
1pcs*2S 7.4V 2000MAH 8C lipo battery