The various indicators have the following meanings:
-The LED blinks red and green every second (Not for 9V Block batteries):
The rechargeable batteries are alternately char- ged and discharged..
-The LED flashes red and green in a 1/2 second rhythm (not applicable to 9V rechargeable batteries):
If the rechargeable batteries do not have to be refreshed (refresh function), conditional on the length of storage or the age, the following process takes place: the rechargeable batteries are di- scharged to minimize the memory effect.
-The LED glows red constantly:
The rechargeable batteries are charged with the maximum charge current.
-The LED glows green constantly:
The batteries are fully charged and the Battery Charger has switched over to trickle charge.
Warning!
The batteries could become hot during charging. NEVER touch hot batteries! There is a danger of being burnt!
• 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.
Calculating the average charging time
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.
Note, however, that the times calculated are only indicative.
Current time (Min.) =
Capacity of the battery (mAh) x 1,5 x 60 Charging current of the appliance (mA)
Automatic charging control/
Retention charging
This Battery Charger controls the charging time for rechargable batteries of the types
In mathematics, with Delta Δ differences are described.
„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 light fall in voltage is recognised by the charging electronics and the charge process is terminated. The Battery Charger automatically switches to „Retention charging“. This means that the batteries are no longer being charged with continuous power, but with short power impulses instead. This counteracts the process of
Timer control
In addition, this charger is fitted with a timer control, which after 15 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.
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