[. . . ] Connect battery chargers that are used in the open via a ground fault circuit breaker. penetration of water in the battery charger increases the risk of an electric shock. [. . . ] Please observe the article number on the type plate of your battery charger. The voltage of the power supply must correspond with the data given on the nameplate of the battery charger. Charging Procedure The charging procedure starts as soon as the mains plug of the battery charger is plugged into the socket outlet and the battery 1 is inserted into the charging compartment 2. Therefore, disconnect the battery charger from the mains supply after the battery has been charged and remove the battery. With continuous or several repetitive charging cycles without interruption, the charger can warm up. This is not meaningful and does not indicate a technical defect of the battery charger. A battery that is new or that has not been used for a longer period will not achieve its full capacity until after approx. Leave such a battery in the battery charger until it has warmed up considerably. A significantly reduced working period after charging indicates that the battery is used and must be replaced. The wires in the cable are coloured according to the following code: Do not connect the blue or brown wire to the earth terminal of the plug. [. . . ] Only for EC countries: Do not dispose of battery chargers into household waste!According to the European Guideline 2002/96/EG for Waste Electrical and Electronic Equipment and its implementation into national right, battery chargers that are no longer usable must be collected separately and disposed of in an environmental correct manner. [. . . ]