FAFREES F20 Master Manual Del Usuario página 18

DO NOT cover up the charger while it is charging. The charger air cools and needs to be
on a hard, flat surface in an open space. Use the charger with the indicator lights facing
upward.
DO NOT open the battery housing, which will void the warranty and can result in
damage to the battery, property or cause serious injury and/or death.
EN 15