cecotec CONGA POPSTAR Z900 ERGOFLEX Manual De Instrucciones página 9

Avoid contact between the battery and small metallic objects
such as paper clips, coins, keys, nails or screws.
Before a new battery is used or the battery is used for the first
time after long-term storage, fully charge the battery. When
the device is stored and not used for long periods of time,
ensure that the battery pack is fully charged.