DVS Fast Charging System
Operation and Maintenance Manual
09910-W-03-02
Page
24 of 27
Webasto Charging Systems, Inc.
serviced battery pack prior to fast charging may result in damage to the new module. If
the problem persists or grows worse, replace the battery pack.
J
Entering the appropriate Charger and BMID Configuration
is very important for the life
and utility of the battery pack. A configuration that is not matched to the battery being
charged will result in undercharge, overcharge or excessive heating of the battery during
charge. Use the Charge Configuration menu to make sure the charge configuration is
appropriate for your battery and application. Use the BMID Configuration menu to check
that the BMID installed on the pack has the correct battery manufacturer type-code, the
correct capacity of the cells, and the correct number of cells.
K
A battery that is connected at a state of charge (SOC) which is too low to be fast charged
safely will be charged at a low rate until it has recovered sufficiently to accept fast
charging. In this case, the user must press and hold the EQ button to force charging to
begin.
L
If the battery voltage reported by the BMID goes below the minimum allowable volts per
cell or exceeds the maximum allowable volts per cell during a charge event this fault is
set. The minimum/maximum allowable volts/cell are based upon the battery type
selected in the BMID Configuration. Verify the BMID Configuration contains the
correct battery type. Check the battery charge path for shorts or opens. Check the battery
for defective or damaged cells. If no problems are found replace the BMID.
M
This fault is usually the result of an unprogrammed BMID or an improperly programmed
BMID. Using the BMID Configuration menu verify that the BMID installed on the pack
has the correct battery manufacturer type-code, the correct capacity of the cells, and the
correct number of cells input.
N
Refer to the Installation Manual for correct cable and connector sizing. Check the crimp
or solder joint between the cable and the connector pins to ensure good electrical contact.
Replace the connector if the case is damaged.
O
The equalization schedule is very important to the life of the batteries. If the batteries are
being equalized too infrequently, or the equalization is interrupted too often, the capacity
will start to degrade. If the batteries are being equalized too often, there will be
excessive water loss requiring higher maintenance. Adjust the equalization schedule for
the batteries based on the use level. See the “BMID Manual” for reprogramming
instructions.
P
Flooded lead acid batteries must be watered as part of a regular maintenance schedule.
Insufficient watering will result in reduced capacity, overheating and reduced life.
Consult your battery manufacturer’s guidelines for a watering schedule and proper
procedures.
Q
Loose battery interconnects or power cables increase the resistance of the pack and can
cause overheating and/or slow charging. Using insulated gloves and tools, check the
torque on all bolted interconnects and power cables, and verify that welded interconnects
have not loosened.
R
Tighten all screws and fasteners as needed.
