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INTRODUCTION

This document describes how to connect the HELIOS ESS, a rechargeable Li-ion battery from Discover Energy Systems (Discover), in a battery bank configuration where multiple batteries are connected in parallel.

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Paralleling Two Batteries

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Paralleling Three Batteries

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Paralleling More Than Three Batteries

The following accessories are available for connecting the HELIOS ESS batteries in parallel.

Accessory

Part Number

HELIOS ESS Battery to Inverter Power Cables

  • 2 pairs of 200 A cables with quick connects:

    • 2/0 AWG Positive Battery Cable (1.0 m, 39.37 in)

    • 2/0 AWG Negative Battery Cable (1.0 m, 39.37 in)

  • 2 pairs of 170 A cables with quick connects:

    • 1/0 AWG Positive Battery Cable (1.0 m, 39.37 in)

    • 1/0 AWG Negative Battery Cable (1.0 m, 39.37 in)

 

950-0070

 

 

950-0071

HELIOS ESS Parallel Wire Kit (battery to battery)

  • 1 pair of 200 A cables with quick connects:

    • 2/0 AWG Positive Battery Cable (1.35 m, 53 in)

    • 2/0 AWG Negative Battery Cable (1.35 m, 53 in)

  • CAT6 Cable (135 cm, 53 inch) (COM3/COM4)

950-0068

HELIOS ESS Terminal Connector Set

950-0072

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