16
4445103694
Display panel
LED indicator on display panel
3
TR terminal
Output for controlling a
normally open relay NO
(connection variant D) or a
normally closed relay NC
(connection variant C1)
4
D+ terminal
Input for D+ signal of the
alternator or ignition lock
signal (terminal 15)
5
Netz terminal
Output for 12 V signal
when connected to mains
(max. 100 mA)
6
BORD+
Connection to positive
pole of 12 V house battery
7
COM–
Connection to negative
pole of the house bat-
tery/chassis
8
START+
Connection to positive
pole of 12 V starting bat-
tery
No in
fig.
Designation
1
On/Off button
2
Indicator LEDs
No in
fig.
2
,
page 3
Designation
Description
LED
Status
Description
Current
(red)
On
Charging current
present; mains or
booster charging
mode; brightness
indicates the inten-
sity of the charging
current
Off
Charging current
<0.2 A
Batt. I
(yellow)
On
House battery is
charged in mains
or booster
charging mode
Flashing slowly
• High tempera-
ture protection
• Only LiFePO4
batteries: Low
temperature
protection
Flashing
quickly
Only LiFePO4
batteries: Low tem-
perature protec-
tion
Off
No charging
Battery full
(green)
On
House battery fully
charged (100 %);
U2/U3 phase
Flashing
Charging process
in U1 phase (lead
batteries: <75 %,
LiFePO4 batter-
ies:< 90 %)
Flashing slowly
State of charge
75 – 100 % (lead
batteries: >75 %,
LiFePO4 batteries:
> 90 %)
Summary of Contents for BUTTNER MT BCB25/20
Page 3: ...4445103694 3 6 7 1 2 3 5 4 8 1 5 4 3 2 1 8 7 6 2...
Page 4: ...4 4445103694 2 1 3 100 mm 100 mm 4 5...
Page 6: ...6 4445103694 1 2 3 90 a 2 3 5 m 5 m 1 4 5 5 m b...
Page 10: ...10 4445103694 223 270 74 f...
Page 27: ...4445103694 27 Weight 2 85 kg Inspection certification...
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