a specialized single-cell lithium polymer battery pack designed primarily to power Flysky RC surface transmitters. 
Its ultra-slim form factor is engineered specifically to slide into the dedicated battery compartments of popular radio systems.
Explicitly intended as a replacement factory pack for Flysky radios including the FS-GT2B, FS-GT3C, and FS-i10.
Requires standard 3.7V lithium-chemistry charging protocols. It charges perfectly via the transmitter's onboard mini-USB port or matching Flysky FS-101BC USB cradle.