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Bosch Professional AL 2450 DV Original Instructions Manual page 5

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Battery Charger
Charging time for battery capacity,
– 1.2 Ah
– 1.3 Ah
– 1.4 Ah
– 1.5 Ah
– 1.7 Ah
– 2.0 Ah
– 2.4 Ah
– 2.6 Ah
– 3.0 Ah
Number of battery cells
Weight according to EPTA-
Procedure 01:2014
Protection class
Please observe the article number on the type plate of your battery
charger. The trade names of individual battery chargers may vary.
Starting Operation
 Observe the mains voltage! The voltage of the power
supply must correspond with the data given on the name-
plate 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 7 is inserted into the charging compartment 6.
For charging Bosch batteries without contact APT 1, use
adapter 3.
To remove the adapter 3 from the charging compartment 6,
press release button 2.
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.
Note: The charging procedure is only possible when the bat-
tery temperature is within the allowable charging tempera-
ture range, see Section "Technical Data".
Meaning of the Indication Elements
Flashing Green Battery Charge Indicator 4
The rapid-charging procedure is signalled
by a flashing green battery charge indica-
tor 4.
Afterwards, the battery can be removed for immediate use.
Note: The rapid-charging procedure is only possible when the
battery temperature is within the allowable charging temper-
ature range, see section "Technical Data".
Bosch Power Tools
Continuous Lighting of the Green Battery Charge Indica-
AL 2450 DV
tor 4
When the battery is fully charged, the battery charger imme-
diately switches to trickle charging. This compensates the
natural self-discharging of the battery.
When the battery is not inserted, continuous lighting of the
battery charge indicator 4 indicates that the mains plug is in-
serted in the socket and that the battery charger is ready for
Continuous Lighting of the Red Battery Charge Indicator 5
6 – 20
/ II
section "Technical Data". As soon as the allowable charging
temperature range is reached, the battery charger automati-
cally switches to rapid charging.
Flashing Red Battery Charge Indicator 5
Troubleshooting – Causes and Corrective
Flashing red battery charge indicator 5
No charging procedure possible
Battery not (properly) insert-
Battery contacts contaminat-
Battery pack defective
Battery charge indicators 4 or 5 do not light up
Mains plug of battery charger
not plugged in (properly)
Socket outlet, mains cable or
battery charger defective
Working Advice
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 charg-
English | 5
Continuous lighting of the green battery
charge indicator 4 indicates that the bat-
tery is fully charged.
Continuous lighting of the red battery
charge indicator 5 indicates that the tem-
perature of the battery is not within the al-
lowable charging temperature range, see
A flashing red battery charge indicator 5
indicates a different malfunction of the
charging procedure, see section "Trouble-
shooting – Causes and Corrective
Corrective Measure
Properly insert battery into
battery charger
Clean the battery contacts
(e.g. by inserting and remov-
ing the battery several times)
or replace the battery
Replace the battery
Insert mains plug (fully) into
the socket outlet
Check the mains voltage;
have the battery charger
checked by an authorised af-
ter-sales service agent for
Bosch power tools
1 609 92A 1T8 | (20.1.17)



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