Alpha ESS Storion-SMILE5 Installation Manual page 16

Making the communication cables between batteries
Step13 Make the communication cable between batteries, roughly 700mm in
:
length. Pull the communication cable through the communication baffle that was
taken off in step 2.
Note: There is a communication baffle that does not require communication cable
to go through it.
Step14 Connect the communication cable of cable box from step8 to the battery.
:
Use the communication cable from step13 to connect the two batteries at the side.
After all above connection's done, lock all communication baffles.
Wiring the communication cable
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