[. . . ] Should the power cable be defective, immediately arrange for it to be replaced by a service partner to avoid the risk of injury. The Battery Charger does not contain any userserviceable components. should you open the housing of the Battery Charger , the warranty expires! [. . . ] (Refresh function: With this, older batteries or batteries that have been stored for a long time will be refreshed. ) The LED blinks green: The batteries are being charged by a batterypreserving impulse charge. The LED continuously glows red: The batteries are being charged with the maximum charge current. Dependant on the type, age and remaining battery charge, hence the charging process takes different lengths of time. The average charging times can be calculated using the following formula. , , Minus Delta U" in this case means a negative voltage difference. This charge identification makes itself useful in the following effects: Should a battery be charged with a constant current, its voltage rises continuously. When the battery is full, its voltage reaches a maximum and falls lightly with further current flow. This means that the batteries are no longer being charged with continuous power, but with short power impulses instead. Should Type C or D batteries be charged in the outer charging slots, the operating condition is displayed by the respective outer LEDs. Remove the power cable of the Battery Charger from the plug socket and allow the batteries to cool down. Afterwards you can remove the charged batteries from the Battery Charger. In addition, this charger is fitted with a timer control, which after 17 hours automatically switches over to trickle charge. This serves as additional protection against overcharging should the charge terminating device not respond, due to a possibly defective battery. [. . . ] The warranty covers only claims for material and maufacturing defects, but not for transport damage, for wearing parts or for damage to fragile components, e. This product is for private use only and is not intended for commercial use. The warranty is void in the case of abusive and improper handling, use of force and internal tampering not carried out by our authorized service branch. [. . . ]