Replacement Of Control Module (Bms); Battery Maintenance - Pylontech Force-H2-V2 Manual

5.2.2 Replacement of Control Module (BMS)

5.2.2.1 Turn off the whole battery string's power. Must confirm the D+ and D- terminal are
without power. The turn off progress refer to chapter 3.5.4.
5.2.2.2 Dismantle D+ and D- Power Cable, Communication Cable and Grounding Cable.
5.2.2.3 Dismantle the control Module's fix screw of left and right side. And dismantle the
fix metal brackets.
5.2.2.4 Remove the control module.
Danger: when battery is connected together with the base the internal socket still
have high voltage DC power from serial connected battery modules (battery
module can't be turned off).
5.2.2.5 Pile up the new control module.
5.2.2.6 Install back the control Module's fix screw of left and right side. And Install back
the fix metal brackets.
5.2.2.7 Install back Grounding Cable, Communication Cable and the D+ and D- Power
Cable.
5.2.2.8 Turn on this battery string. Refer to chapter 3.5.4.

5.3 Battery Maintenance

Danger: The maintenance of battery must be 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 whether exist abnormal voltage or not. For example: Single
cell's voltage is abnormal high or low.
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