Sauber V55 Mode D'emploi page 15

27. Do not open the batteries under any circumstances
whatsoever. The batteries should be stored at a
temperature of below 40℃.
28. Make sure that dust, dirt or other foreign objects do not
block the fan grill on the appliance.
29.
WARNING: For the purposes of recharging the battery,
only use the detachable supply unit provided with this
appliance.
30. This appliance contains batteries that are only replaceable
by skilled persons.
Detachable supply unit <ZD12D270050EU>
- 14 -