Alpha ESS Storion-SMILE5 Installation, Operation & Maintenance Manual page 29

Your Smart Energy
Step 18: Open battery housing case and remove DIP baffle, set the DIP switch
2 to "on" mode at the bottom of the module. Then close the DIP baffle and
battery housing case.
NOTE: only the farthest battery from inverter need to set DIP.
If you want to add more batteries, please install the extra ones by the side as
shown below.
NOTE: when adding on battery modules, please install only by side.
You can add up to 6 extra batteries with each two in a string.
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Installation
Figure 26 DIP Operation
Figure 27 Increase the Battery Modules
Alpha ESS Co., Ltd.