The EI Battery – Add Batteries
EI Residential Solar Solution US Installation Manual | www.tigoenergy.com | Help Center 43
To add three batteries in parallel:
1. In the inverter connection wireboxes, connect a COM cable between the battery #1 and
battery #2
COM Parallel
RJ-45 ports.
2. Inside the battery enclosures, connect a COM cable from the battery #1 lower outer
module
COM Link Out
plug to the battery #3 upper module
COM Link In
plug.
3. Inside the battery enclosures, connect a COM cable from the battery #2 lower outer
module
COM Link Out
plug to the battery #4 upper module
COM Link In
plug.
4. In the battery expansion wireboxes, connect power conductors between the
BAT+
and
BAT–
terminals on batteries #1 and #3.
5. In the battery expansion wireboxes, connect power conductors between the
BAT+
and
BAT–
terminals on batteries #2 and #4.
6. In the battery expansion wireboxes, connect terminators to CAN/COM terminals on
batteries #3 and #4.
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