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Step 4The cells
The photo shows one of the original cells. Metal tabs spot welded to the ends of the cells protrude through slots in the circuit board and are soldered in place. I marked the circuit board with "+" and "-" so I would not forget the polarity. It is easy to become confused.
My new cells did not have metal tabs spot welded to them. I decided to use some bare stranded wire. I pushed it through the slots in the circuit board and soldered an end to the circuit board. Then I cut it to length to reach the point of contact on the cell ends. I roughed up the ends of the cells with sandpaper and tinned them with solder. I soldered the cells to the wire pieces.
Put the circuit board back into its case and slide its case into the shaver.
My new cells did not have metal tabs spot welded to them. I decided to use some bare stranded wire. I pushed it through the slots in the circuit board and soldered an end to the circuit board. Then I cut it to length to reach the point of contact on the cell ends. I roughed up the ends of the cells with sandpaper and tinned them with solder. I soldered the cells to the wire pieces.
Put the circuit board back into its case and slide its case into the shaver.
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