BÜTTNER ELEKTRONIK – Batterie-Control-Booster MT BCB 30/30, MT BCB 40/40, MT BCB 60/40
EN
5
2. Description
The battery control booster MT BCB has
3 functions for fully automated charging,
charge maintenance and care of the board
batteries. The device is adjustable to all
common battery types (lead acid/Gel/
AGM/LiFePO
4
).
The device is to be installed either bet-
ween starter- and board battery, or also
integrated in the leisure vehicle in paral-
lel to the existing charge unit and charges
depending the model with additional 30 A
respectively 40 A on 230 V mains and 30 A,
40 A, or even 60 A while driving with most
recent, temperature compensated IUoU
characteristic. The integrated pulsing unit
ensures appropriate battery care if none
of these charging sources are available. As
a result, the device differs in many func-
tions of a charger installed in most Recre-
ational vehicles and is not only used to
maintain and for care, but also to keep the
board battery always fully charged.
2.1. Mains operation
Allows charging the board battery and
supplying the 12 V-consumers from mains
power.
The intelligent microprocessor charging
control with “IU
1
oU
2
oU
3
” charging charac-
teristic and dynamic charging time cal-
culation automatically ensures fast and
gentle full charging as well as subsequent
100% charge retention of the connected
board battery from any state of charge
and always enables simultaneous supply
of 12 V-consumers.
The built-in auxiliary charging output
(12 V/4 – 5 A) ensures that the vehicle
starter battery is charged and is protected
against overcharging.
For silent operation with a dimmed cont-
rol panel, the device can also be operated
in night mode.
Mains operation has priority over booster
and pulsing operation i.e. start - and board
batteries are charged and kept at full charge.
2.2. Booster operation
Enables the board battery to be fully char-
ged while driving, even with most recent
vehicles (Euro 6) with so-called “smart al-
ternators”.
The booster not only completely compen-
sates for voltage drops on the incoming
charging wiring, but also increases the vol-
tage to the level required – depending on
the battery type – to be able to fully char-
ge the board battery as on mains opera-
tion using the optimal “IU
1
oU
2
oU
3
”-char-
ging characteristic.
2.3. Pulsing operation
Whenever there is no charging possibil-
ty, the unused lead battery is protected
against rapid aging and failure due to sul-
phation by battery training (e.g. longer
breaks, wintering or seasonal operation)
– see chapter 4.2.
Note:
• The pulse unit does not replace the
charging source! Check and recharge
the battery regularly (self-discharge)
• Ensure that only one pulse unit is acti-
vated at a time and deactivate if neces-
sary
• With LiFePO
4
batteries, the pulse func-
tion is automatically deactivated
