Specifications - VOLTCRAFT VC 750 Bedienungsanleitung

CHARGING A LEAD-ACID BATTERY
• First make sure your lead-acid battery is a 6-V battery or a 12-V battery. Do not charge batteries with
different operating voltages!
• 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 terminal (+).
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.
• Set the slide switch to 6 V or 12 V depending on the battery to be charged.
• Connect the battery charger to the battery with the correct polarity. On the battery, connect the red
clamp of the battery charger with the positive terminal (+) and the black clamp with the negative
terminal (-).
• When the polarity is correct, connect the battery charger to the power supply (220-240 V~/50/60 Hz).
• The charging process starts automatically.
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.
LED INDICATORS
LED
Battery status indicator lights up red
Battery status indicator lights up green
Battery status indicator flashes green
Reverse polarity indicator lights up red
No LED is lit
MODE OF OPERATION
This automatic plug-in charger allows you to charge any 6-V or 12-V lead-acid batteries.
Due to automatic voltage detection, a battery connected will be charged optimally.
If the connected battery reaches the charging end voltage (7.2 V /14.4 V) during the charging process,
the charging current is switched off to protect the battery from overcharge.
When the charging end voltage has been reached, the battery charger automatically switches to trickle
charging to optimally maintain the battery. If the battery voltage falls below 6.5 V/13 V, the battery
charger starts charging again.
This protects from harmful overcharge as well as the generation of oxyhydrogen.
To start charging, a 6-V battery must have a voltage of at least 3.75 V and a 12-V battery of at least 7.5
V. If the voltage of the battery is below the specified values, the charging process cannot be started (the
green LED flashes).
A safety circuit ensures that no voltage is applied in the battery clamps when no battery is connected.
As opposed to simple battery chargers, the charging current of this automatic plug-in charger is not a
fixed value. It depends on several factors.
These factors include the battery status, the battery age, the battery type and the battery capacity.
It is also important to what extent the battery has been discharged.
If the battery has been discharged considerably, charging starts with a high charging current which
gradually becomes lower. This means that the charging current decreases with increasing battery
voltage.
The following diagram illustrates the charging behaviour:
Status
Quick-charging
Battery full
Battery bad
Polarity incorrect
Not charging
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: ..................... 220-240 V~/50/60 Hz
Charging end voltage: ............... 7.2 V +/- 0.25 V (6-V batteries)
14.4 V +/- 0.25 V (12-V batteries)
Charging current: ....................... 750 mA max.
Charging characteristic: ............ UIoUp
Rechargeable battery type: ....... Any 6-V and 12-V lead-acid batteries (vented batteries, AGM, gel)
Battery capacity: ........................ from 1.2 Ah
Dimensions: ............................... 98 x 55 x 33 mm
Weight: ....................................... 180 g
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®.