Victron Integration Guide

Rev 2.1 09-14-21
3
Battery 1
Battery 2
Battery
N-1
Battery N
Bus
terminator
Bus terminator
Fortress Power - Victron Inverter Guide
Step 3 – Install the battery-to-battery communication circuit
When installing multiple batteries use standard ethernet cables to enable communication between them. Each
Fortress Battery type (eFlex, eVault, eVault MAX) has unique communication requirements. If a single battery is
being used skip this section.
eFlex:
IP65 Bus Terminator + Cap. Installed on the
last available communication port of the eFlex
when paralleling multiple batteries.
It does not matter which communication port you plug into on the eFlex – they are universal.
The batteries should Parallel with each other automatically. If a battery does not parallel the battery will
disconnect and the BMS light (red) will turn on.
See product manuals for additional detail.
eVault
Bus Terminator. Installed on the last port of the eVault when paralleling multiple batteries.
It does not matter which communication port you plug into on the eVault– they are universal. The Bus
terminator looks like a standard ethernet plug without a cable attached.