EG4 BOSSBox Cable Kit, Battery to Inverter Communication and Power Cables for EG4 WallMount 280Ah Lithium Batteries

Overview

This is the EG4 BOSSBox Cable Kit, the power and communication cables that connect EG4 WallMount 280Ah batteries inside a BOSSBox enclosure to an EG4 hybrid inverter. Factory-specified lengths remove guesswork.

Planning a system? Read our guide: How to size a battery backup system for your home.

Key benefits

• Degson quick-connect ends push onto the battery without special tools and resist vibration.
• Raw ends connect to most compatible inverters, with lugs added where needed.
• Each cable is rated for 200A continuous with less than 2% voltage drop under full load.
• Communication cable enables closed-loop BMS integration using RS485 or CAN.

Key features

• Four 72in 2/0 AWG (70mm²) power cables
• Routes to inverters such as the 18kPV, 12kPV, FlexBOSS18, or FlexBOSS21
• Weatherproof Degson connector on one end, raw wire on the other
• Meets NEC requirements for battery interconnections

Ideal use

For BOSSBox systems adding a second or later inverter, since each extra inverter needs its own cable kit. Multiple batteries also require the EG4 paralleling kit.

What is included

• Two red 2/0 AWG power cables
• Two black 2/0 AWG power cables
• Communication cable

Key specifications

Model / SKU

EG4BBSTARTKIT

Brand

EG4

Category

Batteries

From the manufacturer

The EG4 BOSSBox Cable Kit provides essential power and communication cables which connect the EG4 WallMount 280Ah batteries to the EG4 hybrid inverters when used with the BOSSBox enclosure. This cable set uses factory-specified cable lengths, eliminating guesswork and ensuring proper connections within the BOSSBox configuration. The kit includes four 2/0 AWG (70mm²) power cables, two red and two black. Each 72in cable is rated for 200A continuous power between the battery and the inverter. They route from the battery inside the BOSSBox enclosure to an externally mounted inverter, such as the 18kPV, 12kPV, FlexBOSS18, or FlexBOSS21. Each cable features one weatherproof Degson quick connect terminal end and one raw end. The Degson connectors provide a simple connection without complicated tools. Line up the cable with the matching terminal on the weatherproof battery and push to connect. The connection is secure, vibration resistant, and suited for outdoor use. The raw end makes it possible to connect to nearly any compatible inverter. Attach lugs for inverters that cannot accept raw wire. 3/0 AWG lugs ensure the thick cable fits snug while allowing all strands to slide in with ease for a secure connection. All cables meet NEC (National Electrical Code) requirements for battery interconnections, and they can handle maximum surge currents with less than 2% voltage drop under full load conditions. The communication cable enables closed loop BMS (Battery Management System) integration. This makes it possible to monitor the battery in real time, report the SOC (State of Charge %), and coordinate the charging and discharging between the batteries and compatible EG4 inverters. It’s possible to use both RS485 and CAN protocols. These are standards for system integration, and they enable remote monitoring options. Important: A BOSSBox purchase includes cables for one inverter and one battery. Every additional inverter requires one additional cable kit. Systems with multiple batteries need the EG4 paralleling kit to parallel all units. Choose the EG4 BOSSBox Cable Kit to simplify wiring in a BOSSBox with multiple inverters.

Warranty terms mentioned in this description are the manufacturer’s. Our own coverage is the 30-day limited warranty.

Before you order

We confirm compatibility, installation requirements, and delivery details with you during order review, before any payment. Home electrical work may require a qualified installer.

Ask our team whether this cable kit fits your BOSSBox. Message our team on WhatsApp.