In some markets the car industry offers cars and 4WDs what not properly charge the batterie(s) anymore due to very strict exhaust regulations. Either the alternator is temporarily not charging or the charge voltage is reduced.
The new DBM20A can be used in 2 main applications such as 12/12V or 24V/12V InCarCharger offering 3 different battery selections with a 3 or 4 stage charge mode (bulk, absorption, float with optional equalize)
If only the DBM20A is installed, it recognizes an IGN-signal or the present charge of the alternator. With the optional installation of the Link Start Kit (DBMLSK + IBS Relay + Switch) or an IBS monitor new version 8.1, then additional functions are available such as link start, winch support, solar link or fast charge. An existing IBS Dual Battery Systems can be partly integrated. New IBS-DBS system with future version 8.1 will support all DBS functions.
As of version 2.7, during the installation of the IBS-DBM20A, the setting of the additional battery type can be changed from lead to Li-ion battery.
During installation with the first connection of the wires red and black, the DBM20A indicates the software version and the configuration mode for the charge voltage starts. The unit offers 6 charge modes: low, low with equalize, mid, mid with equalize, high, high with equalize what can be selected in a cycle with GND (- or chassis) of the yellow Link/Prog wire. Every short GND connection switches to the next charge mode, what is indicated by the "Charge Select" LEDs. If now further charge is done, the selected combination LED will flash after 5 sec and the configuration is saved (for sample: the Mid level and equalize mode LEDs are on, this means the DBM20A charges for 14.4V and equalize is activated).
Typ | charging voltage |
---|---|
Low | 14.0V |
Low mit Equalize | 14,0V und 14.6V |
Mid | 14.4V |
Mid mit Equalize | 14.4V und 15.0V |
High | 14.8V |
High mit Equalize | 14.8V und 15.4V |
The equalize mode protects the battery from sulfation at least after 30 days. The DBM20A monitors the charge level of the Aux battery and how often deep discharge occured.Check datasheet of used battery to decide if equalize is needed (for instance L-type batteries do not need equalize!). There are appliances what might shut down during equalize in Mid or High charge mode due to temporarly high charge voltage.
In hot climat regions we recommend to select the next lower charge mode.
Is the attached load to the Aux battery higher than max. charge current of the DBM20A, the relay (if installed) gets activated and both batteries Main and Aux are now charged from the alternator in parallel. If the heavy load on Aux is switched off, the DBM20A returns after a time delay back to DC/DC charge mode.
The robust aluminium housing with connection latches makes a simple installation possible. Electronics is protected with silicone from water. The DBM20A is to be protected during the attachment in the engine compartment from direct temperature irradiati
Model/Ordernumber | IBS-DBM20A |
Battery System | Dual |
Mounting location | Engine compartment / Inside |
Output voltage max. | 15.4V |
Input Voltage | 6..30V |
Consumption @ 12.5V | 20mA |
Charging current nom. / max. | 20/23A |
Manual Battery Link | yes, with Link Start Kit |
Temperature Range | -20°C- +100°C |
Efficiency | 95% |
Seal | silicones |
Dimension | 140x81x44mm |
Weight | 0.55kg |