Working Advice - Bosch UniversalRotak 36-550 Originalbetriebsanleitung

20 | English
Charging Advice
With continuous or several repetitive charging cycles without
interruption, the charger can warm up. This is not meaning-
ful and does not indicate a technical defect of the battery
charger.
A significantly reduced working period after charging indic-
ates that the battery is used and must be replaced.
Observe the notes for disposal.
Battery Cooling (Active Air Cooling)
The fan control integrated into the charger monitors the tem-
perature of the inserted battery. When the battery temperat-
ure is above 30 °C, a fan cools down the battery to the op-
timal charging temperature. The fan generates a ventilation
sound when switched on.
If the fan is not running, the battery temperature is within the
optimum charge-temperature range or the fan is defective.
In this case, the charging time of the battery might be exten-
ded.

Working Advice

Battery charge-control indicator
The battery is equipped with a charge-control indicator,
which indicates its charge condition. The charge-control in-
dicator consists of 3 green LEDs.
Press the charge-control indicator button to actuate the
charge-control indicator. After approx. 5 seconds, the
charge-control indicator goes out automatically.
The charge condition can also be checked when the battery
is removed.
LED Indication Battery Capacity
Continuous lighting of 3 ≥ 2/3
green LEDs
Continuous lighting of 2 ≥ 1/3
green LEDs
Continuous lighting of 1 ≤ 1/3
green LED
Flashing of 1 green LED Reserve
When no LED lights up after pressing the button, then the
battery is defective and must be replaced.
For safety reasons, the charge condition of the battery can
only be checked when the garden product is at a standstill.
During the charging procedure, the three green LEDs light up
one after the other and briefly go out. The battery is fully
charged when the three green LEDs light up continuously.
The three green LEDs go out again approx. 5 minutes after
the battery has been fully charged.
Troubleshooting
1 609 92A 5WA | (16.07.2020)
Temperature Monitoring Indicator of the battery
The red LED of the temperature monitoring indicator signals
that the battery or the electronics of the garden product
(with battery inserted) are not within the optimum temperat-
ure range. When this occurs, the garden product will not op-
erate or not at full capacity.
Temperature Monitoring of the Battery
The red LED flashes when pressing the button or the On/Off
switch (with battery inserted): The battery is outside of the
permitted operating temperature range.
The battery switches off at a temperature above 70 °C until
the allowable operating-temperature range is reached again.
Temperature Monitoring of the Garden
Product's Electronics
The red LED lights up continuously when pressing the On/
Off switch: The temperature of the garden product's elec-
tronics is below 5 °C or above 75 °C.
At a temperature above 90 °C, the electronics of the garden
product switch off until the temperature is within the allow-
able operating-temperature range again.
Cutting Capacity (Battery Operating Duration)
The cutting capacity (battery operating duration) depends
on lawn properties, such as grass density, moisture content,
grass length and height of cut.
Switching the machine on and off frequently during cutting
will also reduce the cutting capacity (battery operating dura-
tion).
To improve the cutting capacity (battery operating dura-
tion), it is recommended to cut more frequently, increase
the cutting height and walk at an appropriate pace.
The example below shows the connection between cutting
height and cutting capacity with regard to three batteries.
Cutting Conditions
6cm
4cm
Very thin, dry grass
Cutting capacity
Battery with 2.0 Ah up to 250 m
Battery with 4.0 Ah up to 500 m
Battery with 6.0 Ah up to 750 m
To increase the run time an additional battery can be pur-
chased from an authorised customer service agent for Bosch
garden products.
2
2
2
Bosch Power Tools