Translations:KAVAN Smart PRO T70 Dual battery switch with telemetry expander - Instruction manual/2/en
It is suitable for models equipped with dual receiver batteries or an ESC battery eliminator circuit (BEC) used as a primary power source, combined with a small backup battery. The battery switch prefers its primary battery input, and in case of a voltage drop it automatically switches to the secondary input. The charging circuit may be optionally enabled to charge the secondary battery from the primary input/BEC.