Century C12-100XSLi User Manual page 18

5. Troubleshooting continued
NO. SIGN
Battery no voltage
6
reading
Sleep mode cannot
7
be deactivated
Battery external
8 damage - terminal,
cover, casing
9 Battery exploded
BMS keeps cutting
off when batteries
10
connected in series
or parallel
18
POSSIBLE CAUSES
The battery is over-discharged below 10V and is
lower than the working voltage of the BMS, the
BMS cannot work normally
BMS power supply line is damaged, BMS cannot
work normally
Internal power cord disconnected
BMS failed
The activation voltage is 1.2V lower than the
battery voltage
The current of load is too small
In parallel string, one battery is in sleep mode due
to over-discharge sleep protection
Improper operation such as drop, impact, etc.
High voltage due to improper charging causes
BMS to fail, and the battery is not protected
Instant violent collisions, squeezing, puncture, rupture
etc. making the battery unable to release energy
One battery triggers over-voltage, under-voltage
and over-current protection, etc.
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CORRECTIVE ACTIONS
Recharge the battery in time and confirm
that the battery can be switched on
normally. If the battery cannot be turned
on again, replace the battery
Replace the battery
Replace the battery
Replace the battery
Ensure that the charging activation voltage
is 1.2V higher than the battery voltage
Disconnect the load and reconnect the
load to ensure that load resistance <5kΩ
Disconnect the battery and ensure both
batteries are at similar SOC before
reconnecting
Replace the battery
Replace the battery
Check the load and charger situation.
Ensure the system works within the
specification. Also refer to all the above
relevant information
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ADVANCED LiFePO4 TECHNOLOGY