When smoke or stench from scorched insulation is noticed, immediately unplug the charger from the mains.
There are no user-serviceable parts in the charger. Contact your dealer for spare parts if necessary.
Never charge multiple batteries simultaneously.
Do not attempt to recharge non-rechargeable or defective batteries. This charger is not suitable to charge
Sealed Lead-Acid (SLA) or Valve Regulated Lead-Acid (VLRA) batteries.
Do not short-circuit the charging clamps!
Only replace the fuses by fuses with the same specifications.
3.
General Guidelines
Refer to the Velleman® Service and Quality Warranty on the last pages of this manual.
Protect this device from shocks and abuse. Avoid brute force when operating the device.
Protect the device against extreme heat, dust and moisture.
Familiarise yourself with the functions of the device before actually using it.
All modifications of the device are forbidden for safety reasons.
Only use the device for its intended purpose. Using the device in an unauthorised way will void the warranty.
Damage caused by disregard of certain guidelines in this manual is not covered by the warranty and the
dealer will not accept responsibility for any ensuing defects or problems.
4.
Preparation
Always check the condition of the cables and clamps before using the battery charger. Do not use
when damage is noticed!
Refer to the illustrations on page 2 of this manual.
Disconnect the battery from the vehicle before charging. To do this, first remove the negative pole
connection, and then proceed with the positive pole connection.
Clean the poles with a steel brush or sandpaper.
Open the filler caps and check the level of the battery acid. When necessary, add distilled water (liquid level
must be ±1cm below fill opening).
Note: battery acid is corrosive; avoid contact with skins or clothing. Any spills should be washed off
immediately with plenty of water. Consult a doctor when necessary.
Open all filler caps and leave them open during charging, unless the battery has special safety features
built-in (e.g. spark arrestor). Refer to the data sheet of the battery or consult a specialist to find out.
Make sure the battery charger is not connected to the mains [8].
Connect the positive clamp of the battery charger (red) with the positive pole (+) of the battery. Make sure
the clamp is secured tight.
Connect the negative clamp of the battery charger (black) with the negative pole (-) of the battery. Make
sure the clamp is secured tight.
Select the desired output voltage [3]. Make sure this setting matches with the specifications of the
connected battery!
Plug the battery charger into a suitable mains outlet.
5.
Operation
Refer to the illustrations on page 2 of this manual.
When all preparations are done (see §5), switch on the charger [6].
Set the MIN/BOOST switch [5] to MIN for slow charging (low current, 7 A), set to BOOST for fast charging
(high current, 9 A).
The current meter [1] indicates the charging current. The more the battery is charged, the less current it
will draw. When the current reaches 0 (zero) the charging process must be stopped to prevent the
increasing battery voltage level from destroying the battery.
Note: another way to determine the charge level of the battery is by measuring the density of the acid
using a density meter (see table below).
density = 1.285 g/ml battery fully charged
density = 1.21 g/ml) battery half charged
density = 1.16 g/ml) battery depleted
When the battery is fully charged, immediately switch off the charger [6]. Overcharging will destroy the
battery.
Disconnect the battery from the charger, starting with the clamp on the negative pole (black) and than
proceed with the clamp on the positive pole (red).
The charging of a battery is not a simple process. The charging current will vary due to battery power,
discharge level, temperature and output voltage of the charger.
V. 03 – 11/01/2018
AC15
4
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