The battery product should be stored in a dry, cool, and cool environment;
Generally, the maximum storage period at room temperature is 6 months. When the
battery is stored over 6 months, it is recommended to check the battery voltage. If the
voltage is higher than 51.2V, it can continue to store the battery. In addition, it is needed
to check the voltage at least once a month until the voltage is lower than 51.2V. When
the voltage of the battery is lower than 51.2V, it must to be charged according to the
charging strategy.
The charging strategy is as follows: discharge the battery to the cutoff voltage with
0.2C(40A) current, and then charge with 0.2C(40A) current for about 3 hours. Keep the
SOC of the battery at 40%-60% when stored;
When the battery product is stored, the source of ignition or high temperature should be
avoided and it should be kept away from explosive and flammable areas.
7 Troubleshooting
To determine the status of the battery system, users must use additional battery status
monitoring software to examine the protection mode. Refer to the installation manual about
using the monitoring software. Once the user knows the protection mode, refer to the
following sections for solutions.
Table 7-1: Troubleshooting
Fault Generation
condition
The cell voltage
sampling circuit is
faulty.
The cell temperature
sampling circuit is
faulty
The welding point for cell
voltage sampling is loose or
disconnected.
The voltage sampling terminal
is disconnected.
The fuse in the voltage
sampling circuit is blown.
The cell temperature sensor
has failed.
Electrochemical
cell fault
The voltage of the cell
is low or unbalanced.
Due to large self- discharge,
the cell over discharges to
below 2.0V after long term
storage.
The cell is damaged by external
factors, and short circuits,
pinpricks, or crushing occur.
The cell voltage is
greater than 3.65 V in
The busbar input voltage
exceeds the normal value.
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