Installation Manual

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 32.
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. See Installing the Expansion Battery Pack on page
22.
1.2 Package Items
Main battery pack
Items other than those listed below, such as a power cable, may be provided
separately.
Status
Charge / Discharge
RESU 6.4
R
Main battery pack Communication cable
adapter
Mounting brackets
For details on how these items are used, see Installation on page 15.
5