Pylontech PowerCube-H1 Operation Manual page 19

Danger: DO NOT turn off the "Power Relay Switch" during normal running condition, only in
emergency case it could be turned off directly. Otherwise will cause this battery string current
surge by another battery strings.
(4) Turn off the "Power Switch" of the MBMS. If the ESS configures only single battery without
MBMS, then ignore this operation step.
(5) Turn off the UPS if configured.
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.
NOTE
After installation, DO NOT forget to register online for full warranty:
www.pylontech.com.cn/service/support
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