Mode 3 "12 V" (14.4 V/3.8 A); Mode 4 "12 V" (14.7 V/3.8 A); 12V (14.4V/3.8A)/12V (14.7V/3.8A) Modes; Automatic Battery Recognition - ULTIMATE SPEED ULG 3.8 B1 Operating Instructions Manual

the LED display
entire charging process, until the battery is fully
charged. When the battery is fully charged,
the LED display
display goes out.
The appliance now switches automatically into
trickle charging mode.
Mode 3 "12 V" (14.4 V/3.8 A)
This mode is mainly used for charging 12 V lead-
acid batteries with a large capacity of more than
14 Ah under normal conditions.
♦ Press the MODE selection button
Mode 3 ( ). If you do not activate another
process afterwards, the electronic system will
activate together with the LED display
and starts the charging process.
If the procedure runs without any problems,
the LED display
entire charging process, until the battery is fully
charged.
When the battery is fully charged, the LED dis-
play lights up and the LED display
goes out.
The appliance now switches automatically into
trickle charging mode.
Mode 4 "12 V" (14.7 V/3.8 A)
This mode is used for charging 12 V lead-acid
batteries with a capacity of more than 14 Ah in
cold conditions or for several AGM batteries with
a capacity of more than 14 Ah.
♦ Press the button MODE selection
Mode 4 ( ). If you do not activate another
process afterwards, the electronic system will
activate together with the LED display
and starts the charging process. In this mode,
the charging current is identical to that of
"Mode 3" ( ).
If the procedure runs without any problems,
the LED display
entire charging process, until the battery is fully
charged. When the battery is fully charged,
the LED display
display goes out.
The appliance now switches automatically into
trickle charging mode.
ULG 3.8 B1
remains on during the
lights up and the LED
, to activate
remains on during the
, to activate
remains on during the
lights up and the LED

Automatic battery recognition

As soon as the charger is connected the mains
power supply, the LED display
ance lights up.
The charger recognises the battery on the basis
of the following criteria:
if the voltage of the battery is less than 3.8 V or
greater than 15 V, the battery is not suitable for
charging or defective. The LED Displays
, and fl ash. The charger remains in
"Standby mode" and cannot be switched to another
charging mode by means of the MODE selection
button .

Pulse charging mode

The mode is suitable for the charging/regeneration
of empty, used and overcharged 12 V lead-acid
batteries.
When the charger is connected to a battery and
the charging process starts it automatically rec-
ognises the battery voltage. It will switch to pulse
charging mode if the voltage is in the range of
7.5 V ± 0.5 V to 10.5 V ± 0.5 V.
This pulse charging process is continued until the
battery voltage has increased to 10.5 V ± 0.5 V.
As soon as this state is reached, the charger switches
over to the previously selected normal charging
mode.
Now the battery can be charged quickly and safely.
Most empty, used or overcharged batteries can be
regenerated and reused using this procedure.
NOTE
► During the pulse charging process, the LED
display fl ashes.

Trickle charging

The charge is equipped with an automatic trickle
charging function. Depending on the voltage of the
battery, the charger reacts by supplying diff erent
charging current. The battery can remain connected
to the charger for a long period of time.

Protective function of the appliance

If a non-standard situation should occur, such as
short circuiting, a critical voltage drop during the
charging process, an open circuit or reversed
GB
IE
on the appli-
,
5