VOLTCRAFT VC 10 PROFI Mode D'emploi page 4

CHARGING A LEAD-ACID BATTERY
• First make sure your lead-acid battery is a 12 V battery. Do not charge batteries with different
operating voltage!
• Disconnect all loads from the battery.
• If the battery is installed in a car, turn off the ignition and any other loads.
Observe the instructions and safety information of the vehicle to find out how the
vehicle battery should be charged. Modern vehicles are equipped with sensitive
electronic parts and controls that can be damaged if you do not proceed properly!
We recommend disconnecting all poles of the battery from the vehicle. First disconnect the
ground connection (negative/-) from the battery. Then disconnect the positive connection
(+). Please note that the radio or the on-board computer in your vehicle might lose data
during this process.
• Carefully clean the battery terminals. Make sure that no residues come into skin or eye contact.
• First connect the battery charger to the battery with the correct polarity. If the polarity is not correct, an
audio signal is played and LED 11 lights up.
• When the polarity is correct, connect the battery charger to the power supply (230 V~/50 Hz).
• Use the On/Off switch (1) to switch on the battery charger. The switch is illuminated and the standby
LED (2) lights up. If the battery has not been connected yet, LED 8 (battery faulty) lights up as well.
• Now you can select a function using the mode button (3). See the next chapter for a description of the
individual operating modes.
If you want to charge a vehicle battery without disconnecting it (see safety instructions at
the beginning of this section), you have to find out which terminal of the battery is
connected to the vehicle body (the negative terminal in most vehicles) before connecting
the battery charger.
Use a bare piece of metal (no painted metal). Moreover, it has to be as far away as
possible from the battery or fuel lines.
Negative terminal of the battery is connected to the body:
First connect the red clamp of the battery charger to the positive terminal (+) of the battery.
Then connect the black clamp to a bare piece of metal of the engine block.
Positive terminal of the battery is connected to the body:
First connect the black clamp of the battery charger to the negative terminal (-) of the
battery. Then connect the red clamp to a bare piece of metal of the engine block.
• After the charging process, disconnect the battery charger from the mains supply.
• First remove the clamp from the negative terminal and then from the positive terminal.
OPERATING MODES
Mode 1: Summer mode (14.4 V +/- 0.25 V)
This mode is suitable for all lead-acid batteries (also SLA, gel, and AGM) with a capacity above 20 Ah at
normal ambient temperature.
To select this mode, press the mode button (3) until LED 4 (car symbol) lights up. The charging process
starts automatically. At the same time, the charge LEDs (9, 10, and 12) light up depending on the battery
voltage (also see "Description of LEDs/functions").
When the battery is fully charged (14.4 V +/- 0.25 V), all three LEDs (9, 10, and 12) light up.
Mode 2: Winter mode (14.7 V +/- 0.25 V)
This mode is suitable for all lead-acid batteries (also SLA, gel, and AGM) with a capacity above 20 Ah at
low ambient temperature or for batteries with a higher specified charging end voltage. Please observe the
charging instructions of the battery manufacturer.
To select this mode, press the mode button (3) until LED 6 (winter symbol) lights up. The charging
process starts automatically. At the same time, the charge LEDs (9, 10, and 12) light up depending on
the battery voltage (also see "Description of LEDs/functions").
When the battery is fully charged (14.7 V +/- 0.25 V), all three LEDs (9, 10, and 12) light up.
Mode 3: For motorcycle batteries (up to 14 Ah)
This mode is intended especially for batteries with a capacity above 4 Ah, e.g. for motorcycle batteries.
To select this mode, press the mode button (3) until LED 7 (motorcycle symbol) lights up. The charging
process starts automatically. At the same time, the charge LEDs (9, 10, and 12) light up depending on
the battery voltage (also see "Description of LEDs/functions").
When the battery is fully charged (14.4 V +/- 0.25 V), all three LEDs (9, 10, and 12) light up.
Mode 4: Starter function
This mode is used when the battery voltage is too low to start the vehicle.
The starter function provides enough power to start the vehicle.
To select this mode, press the mode button (3) until LED 5 (starter function) lights up. The electronic
control initiates the charging process automatically.
If the battery voltage falls below 8.5 V (e.g. when you try to start your vehicle) in this mode, the device
supplies 35 A to the battery for 3 seconds. This is usually sufficient to start the engine. If necessary,
repeat the procedure.
Regeneration function:
This function is designed to regenerate deep-discharged batteries.
The battery charger automatically detects the voltage of the connected battery.
At a battery voltage of 7.5 V, the battery charger uses pulse charge to charge the battery until the voltage
is 10.5 V. At a battery voltage of 10.5 V, the battery charger automatically switches to the previously
selected charging process.
Overheat protection:
The device is equipped with a temperature-controlled overheat protection.
When the temperature inside the casing exceeds 45 °C, the built-in fan is activated at intervals to make
sure the operating temperature is appropriate.
CHARGING CURVE
• At the beginning of the charging process in mode 1 or mode 2, the battery charger charges with a
battery-friendly soft start. For one minute, it charges the battery applying a low current between
1 - 1.2 A.
• If the battery voltages is very low (between 7.5 and 10.5 V), the battery charger begins with pulse
charge to regenerate the battery (PULSE phase).
• When the battery voltage reaches 10.5 V, the charger continues with maximum current (HIGH RATE
CHARGING phase).
• At a voltage of 13 V, the device gradually reduces the current (MEDIUM RATE CHARGING phase) and
finally charges with a constant current (LOW RATE CHARGING).
• When the charging end voltage is reached, the battery charger stops charging.
• When the battery voltage falls below 12.8 V due to self-discharge, the battery charger starts charging
again with a low current to balance the self-discharge of the battery.
Please note that the charging current in motorcycle mode 3 (batteries up to 14 Ah) is lower
accordingly.
CLEANING
Disconnect the battery charger from the battery and the mains voltage before cleaning it. Clean the
outside of the product with a clean, dry, and soft cloth.
Do not use aggressive cleaning agents to avoid discolouration.
DISPOSAL
Product
At the end of its service life, dispose of the product according to the relevant statutory
regulations.
Lead-acid batteries
The end user is legally obliged (battery regulation) to return used batteries. Disposal in the

household waste is prohibited!
Batteries containing lead are marked with "Pb" written next to the trashcan symbol. This
Pb
indicates disposal in the household waste is prohibited.

You can return used lead-acid batteries free of charge at the official collection points of
your community, in our stores, or wherever lead-acid batteries are sold!
You thus fulfil your legal obligations and contribute to the protection of the environment.
Pb
SPECIFICATIONS
Operating voltage: ..................... 230 V~, 50 Hz
Charging end voltage: ............... 14.4 V +/- 0.25 V or 14.7 V +/- 0.25 V
Charging current: ....................... 10.0 A (summer and winter mode)
1.0 A (motorcycle mode)
35.0 A (for 3 seconds in starter mode)
Rechargeable battery type: ....... Any 12 V lead-acid batteries (vented batteries, AGM, gel)
Battery capacity: ........................ 4 - 120 Ah
Dimensions: ............................... 240 x 200 x 130 mm
Weight: ....................................... 1.9 kg
Legal notice

These operating instructions are a publication by Voltcraft®, Lindenweg 15, D-92242 Hirschau/Germany, Phone +49 180/586 582 7
(www.voltcraft.de).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming, or the capture in electronic data
processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
These operating instructions represent the technical status at the time of printing. Changes in technology and equipment reserved.
© Copyright 2009 by Voltcraft®.