KERN MCB 300K100M Mode D'emploi page 70

9.10.2 Rechargeable battery operation (optional)
When an optional rechargeable battery is used, proceed as follows:
On models where the back of the display unit is not directly accessible, remove the
two black rotary knobs from both sides of the display unit in order to open the battery
compartment and remove the display unit from the holder.
 Lift-off the battery cover on the lower
side of the balance
 Carefully take out the battery holder
(1)
 Carefully pull-out plug (2) from the
connection CN 4 (3)
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