To replace the batteries of the Nuki Keypad, open the housing by detaching the lower part of the keypad from the upper one - this can be done easily without tools. If necessary, use a flat-head screwdriver to remove the batteries, if the batteries are not too easy to remove. Now insert two new CR2032 batteries (button cells) and close the case carefully.
Batteries - lifetime
The Nuki Keypad is battery operated and comes with two button cells (CR2032). The average life of the batteries is 12-18 months; this corresponds to about 30,000 lock actions. If the batteries of the keypad are empty, you will need your smartphone, Nuki Fob or the physical key to open your door.