Description:Walkera Mini CP,V120D02S and other small electric helicopters' 1S charger can only charge fot two battaries in the same time.After using these accessories in the package and weld them in the old 1S charger,then the charger which is upgraded can charge four batteries in the same time.Before welding components, please look at the following pictures.Two components weld at site which they mark in rectangle.Electric resistance can use the 1.2K units which mark in rounded rectangle.The electric resistance marked in red rhombus should change into 1.2K electric resistance.The capacitance marked in ellipse should all weld in 100nF units.The led should keep the same high as before.Blue arrow should keep the oringnal led in the same direction.Do not make a mistake of Plus-n-Minus.Red is corresponding to positive electrode.Black is corresponding to negative electrode.The electric wires position is depend on your own.Package include:1 x 1s Upgraded Charging Package
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