Repair and restore 6 Bosch Ixo screwdrivers....Ixo 5

I bought 6 not working Bosch Ixo screwdrivers and three chargers.
Over the following videos I hope to fix them all.

[jensschroder]

I guess this is the 4th generation of the IXO.
Version 3 also has the insulator on the battery.
But in this version the direction switch is definitely different than the older IXOs.

[dutchhvacrguy]

The outer pinsnon the direction switch are the mounthing of the outher case of the switch. Thats why there is contineuity on them. The mittle 3pins are the pins on the switch. Center in common en legt and rigt ar the switch sides

[TheEmbeddedHobbyist]

Do i take it that the first plastic cogs are turning faster and with less torque through them than the metal cogs in the later stage of the gear reduction train.
Will we soon be seeing the history of Bosch Ixo screwdrivers, to see how they have changed over time would be quite interesting.

[minimal]

Have a look at the IXO range of accessories and you'll understand what the rubber 'thing' is for …