Battery Maintenance - Pylontech PowerCube-H1 Operation Manual

Caution: Turn off this MBMS will stop the power output of belonging whole Battery Energy Storage
System.
5.2.3.2 Dismantle the 4 screws.
5.2.3.3 Install the new MBMS inside. And reconnect the cables. Refer to chapter 3.5.
5.2.3.4 Turn on this MBMS. Refer to chapter 3.6.
Caution: Before pull out the communication cables must mark the cable number, to avoid cable
wrong sequence.

5.3 Battery Maintenance

Danger: The maintenance of battery must done by qualified and authorized personnel only.
Danger: Some maintenance items must turn off at first.
5.3.1 Voltage Inspection:
[Periodical Maintenance] Check the voltage of battery system through the monitor system.
Check the system abnormal voltage or not. For example: Single cell's voltage is abnormal high or
low.
5.3.2 SOC Inspection:
[Periodical Maintenance] Check the SOC of battery system through the monitor system. Check
the battery string abnormal SOC or not.
5.3.3 Cables Inspection:
[Periodical Maintenance] Visual inspect all the cables of battery system. Check the cables has
broken, aging, getting loose or not.
5.3.4 Balancing:
[Periodical Maintenance] The battery strings will become unbalance if long time not be full
charged. Solution: every 3 month should do the balancing maintenance (charge to full),
normally it will been done automatically by the communication between system and external
device.
5.3.5 Output Relay Inspection:
[Periodical Maintenance] Under low load condition (low current), control the output relay OFF
and ON to hear the relay has click voice, that's mean this relay can off and on normally.
5.3.6 History Inspection:
[Periodical Maintenance] Analysis the history record to check has accident (alarm and
protection) or not, and analysis its reason.
5.3.7 Shutdown and Maintenance:
[Periodical Maintenance]
Some system function must be maintenance during the EMS restart, it is recommended to
maintenance the system every 6 months.
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