is minimizing the unit furthermore the primary recharging unit can include some battery unit along with the controller all in one structure the housing 27 is preferably filled with an isolation composite 19 such as ferrite molypermalloy powder or kool mu u00ae the recharging power derived from the controller is regulated by the on board circuit components 23 resident on a printed circuit board 21 and is then applied to the charging coils 15 the circuit components 23 on printed circuit board 21 are contained within an enclosed metal case 24 case 24 being recessed and seated inside housing 27 the charging coils 15 are isolated from the printed circuit board 21 by a layer of isolation material 20 that may be any good electrical insulation material and which is sandwiched between the circuit board 21 and the back wall of metal case 24 additionally the charging coils 15 are isolated from the printed circuit board 21 by a layer of heat insulation material 25 that may be any good heat insulation material and which is sandwiched between the back wall of metal case 24 and ferrite core 18 to be described charging coils 15 are connected to the circuit components 23 via a power cable 26 the circuit components 23 of.