Manual Bosch UniversalRotak 36-555 (page 19 of 333) (English, German, Dutch, Danish, French, Italian, Polish, Portuguese, Swedish, Turkish, Spanish, Norwegian, Finnish)

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Due to the intelligent charging method, the charging condi-

tion of the battery is automatically detected and the battery

is charged with the optimum charging current, depending on

battery temperature and voltage.

This gives longer life to the battery and always leaves it fully

charged when kept in the charger for storage.

Meaning of the Indication Elements of the

charger (AL3620CV/AL36V-20)

Rapid-charging Procedure

The rapid-charging procedure is indicated by

flashing of the green battery charge indicator.

Indication element of the battery: 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

LEDs go out again approx. 5minutes after the battery has

been fully charged.

Note: The rapid-charging procedure is only possible when

the battery temperature is within the allowable charging

temperature range, see section “Technical Data”.

Battery charged

Continuous lighting of the green LED indic-

ator indicates that the battery is fully charged.

Additionally, a signal tone sounds for approx.

2seconds, which acoustically indicates that the battery is

fully charged.

Afterwards, the battery can be removed for immediate use.

When the battery is not inserted, continuous lighting of the

LED indicator indicates that the mains plug is inserted in the

socket outlet and that the battery charger is ready for opera-

tion.

Battery Temperature below 0°C or above 45°C

Continuous lighting of the red LED indicator

indicates that the temperature of the battery is

not within the allowable charging temperature

range, see section “Technical Data”. As soon as the allowable

charging temperature range is reached, the battery charger

automatically switches to rapid charging.

When the battery is not within the allowable temperature

range, the red battery LED lights up when inserting the bat-

tery into the battery charger.

No Charging Procedure Possible

If a different malfunction of the charging pro-

cedure is present, this will be indicated

through flashing of the red LED indicator.

The charging procedure cannot be started and the battery

cannot be charged (see section Troubleshooting).

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

green LEDs

≥ 2/3

Continuous lighting of 2

green LEDs

≥ 1/3

Continuous lighting of 1

green LED

≤ 1/3

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.

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.

English | 19

Bosch Power Tools F 016 L81 836 | (07.09.2018)

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Bosch UniversalRotak 36-555 Manual

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