BP-LFP-2725(D)
Revision 1-2
16
G1 Switch position OFF
Please note: The following description applies to the BP-LFP-2725 (pack version), but
not
to the BP-LFP-2725D
(DIN rail version, see G2 "Switch position UPSI").
This is the switch position for long-term storage of the battery. The power consumption of the BMS is
reduced to an absolute minimum. The main switch of the BMS (Power-MOSFETs) is permanently blocked, which
means that the main power plug is de-energized. The battery cannot be charged or discharged in this switch
position. IC
2
communication with the battery is not possible.
Note that the battery should not be stored for a long time in a completely discharged state, as the BMS never-
theless has a very low power consumption and the batteries also show a certain self-discharge.
When the switch is in the OFF position, the storage life is approx. 1 year at 30 % SOC.
G2 Switch position UPSI
This is the switch position for operation with the UPS
UPSI-2412
or
UPSI-2412D
from Bicker Elektronik GmbH.
BP-LFP-2725D
: BP-LFP-2725D: In the DIN rail version of the battery the switch is delivered in the
UPSI
switch
position. It
cannot
be operated without opening the housing.
Both the communication plug and the main power cable must be connected to the UPS system. The UPSI-
2412(D) controls the connection and disconnection of the battery via the system present function of the 8-pin
communication connector. All necessary information is transferred to the UPSI-2412(D) via the SM bus: current
flow, individual cell voltages and state of charge. The protocol is based on the "Smart Battery Data Specification
v1.1".
Please note: After a complete backup operation of the UPSI-2412(D) together with the battery, it should be
recharged as soon as possible. If the input voltage returns to the UPS, it will automatically start charging the
battery.
If the UPS with connected discharged battery is not put in operation again for more than two weeks, the battery
may be deeply discharged.
IMPORTANT:
The switch position
UPSI
is available twice on the switch. The switch settings are the same in normal de-
livery. On request, the
ON
position can be activated by a jumper. The ON position allows the user to use
the battery without a Bicker UPS in the top switch position. In this position, various energy-saving modes
are forcibly inactive because the pack has to be always on standby. As this significantly increases the risk
of deep discharge in the event of accidental activation, this function is standardly deactivated.
