User Guide

1 Introduction
1.1 Features
The RESU
®
6.4 EX battery pack has the following features:
Photovoltaic system: This battery pack is designed for photovoltaic system
compatibility.
Battery management system (BMS): The battery pack’s built-in BMS moni-
tors its operation and prevents the battery from operating outside design
limitations. See Troubleshooting on page 11.
Expandability: The battery capacity can be increased by adding expansion
battery packs. Up to two expansion battery packs can be added. An ex-
pansion battery pack can be purchased either with the main battery pack
or as a separate unit.
1.2 LED Indicators
Main battery pack
Sta
tus
Charge / Discharge
RESU 6.4
R
Status Charge / Discharge
RESU 6.4 EX
R
The LED indicators on the front of the main battery pack show its operational
state as follows:
Initializing : While the main pack is initializing itself, the Status indica-
tor is lit orange.
Normal operation : When the main pack is in normal operation, the Sta-
tus indicator is lit green.
4