Short Circuit Protection - Victron energy LiFePO4 Manuel

A residual discharge current is especially dangerous if the system has been
discharged completely and a low cell voltage shutdown has occurred. After
shutdown due to low cell voltage, a capacity reserve of approximately 1Ah per
100Ah battery capacity is left in the battery. The battery will be damaged if the
remaining capacity reserve is drawn from the battery. A residual current of
10mA for example may damage a 200Ah battery if the system is left in
discharged state during more than 8 days.
3 Installation
Note: Batteries must always be installed in upright position.
Maximum torque
LiFePO4 Battery 12,8V/60Ah Smart: 10 Nm (M6)
LiFePO4 Battery 12,8V/90Ah Smart: 14 Nm (M8)
LiFePO4 Battery 12,8V/100Ah Smart: 10 Nm (M8)
LiFePO4 Battery 12,8V/150Ah Smart: 10 Nm (M6)
LiFePO4 Battery 12,8V/160Ah Smart: 14 Nm (M8)
LiFePO4 Battery 12,8V/200Ah Smart: 14 Nm (M8)
LiFePO4 Battery 12,8V/300Ah Smart: 20 Nm (M10)
LiFePO4 battery 25,6V/200Ah Smart: 14 Nm (M8)

3.1 Short circuit protection

Single battery installation
The battery must be protected by a fuse.
The battery must be connected to a BMS.
Series connection
Up to four 12,8V batteries or up to two 25,6V batteries can be series
connected.
The batteries must be connected to a BMS.
The string of batteries must be protected by a fuse.
Parallel or series parallel connection
Up to five batteries or strings of batteries can be parallel connected.
The batteries must be connected to a BMS.
Each battery or string of batteries must be protected by a fuse, see
figure 1.
Do not interconnect the intermediate battery to battery connections of
two or more parallel strings of batteries.
5