Pylontech PowerCube-M2 Operation Manual page 40

(5) Turn off the UPS(if has).
The UPS can turn on if have equipment must keep running can't turn off. Otherwise
must turn off the UPS to save its power.
Caution: Before change the battery module for service, must charge/discharge the
replaced battery same voltage to the other in system battery modules. Otherwise the
system need long time to do the balance for this replaced battery module.
Warning: Do not turn off the "Power OUTPUT Switch" during normal running condition.
Otherwise will cause this battery string current surge by another battery strings. If
turned off the "Power OUTPUT Switch" in normal running condition, must first turn off
the PCS.
Warning: Do not turn off the "Power Switch" during normal running condition.
Otherwise will cause the DC relay of this Control Module adhesion. If turned off the
"Power Switch" in normal running condition, must first turn off the PCS.
For internal power sypply,
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