Lithium Batteries with Inverter

How to Integrate Lithium Batteries with a Solis 50kW Inverter

Seamless Solar Battery Integration for Commercial and Industrial Use

Integrating lithium batteries with the Solis 50kW Three-Phase Inverter is an effective way to build a reliable, energy-efficient solar power system. Whether you're upgrading an existing setup or installing a new solar solution, this guide covers how to connect lithium batteries to your inverter safely and correctly.

1. Why Pair Lithium Batteries with the Solis 50kW Inverter?

The Solis 50kW inverter is designed for commercial-scale solar systems and offers full support for high-voltage lithium battery integration. Benefits include:

High energy efficiency and fast charging

Long battery lifespan with deep cycle support

Stable power supply for backup or peak shaving

Remote system monitoring via SolisCloud

Easy compatibility with LiFePO₄ technologies

2. Choose a Compatible Lithium Battery

To integrate lithium batteries successfully, choose high-voltage battery systems compatible with the inverter. Supported options include:

LBSA WFRE 691V Lithium Battery Systems

LiFePO₄ (Lithium Iron Phosphate) Batteries

Modular lithium battery packs for commercial use

Ensure the battery voltage is within the supported input range of the Solis inverter.

3. Check BMS Communication

The Solis 50kW inverter supports Battery Management System (BMS) communication to manage charging, discharging, and fault protection.

Protects against overcharging and thermal overload

Improves battery life and system reliability

Supports communication via CAN or RS485 (based on battery brand)

Always use lithium batteries with a built-in BMS and verified inverter compatibility.

4. Match System Voltage and Capacity

Before connecting the system:

Ensure total battery voltage matches inverter input specs

Calculate total battery capacity (kWh) based on site requirements

Use properly rated cables, breakers, and disconnects

Voltage mismatches can cause safety issues or inverter faults.

5. Install the Battery Bank

Use a qualified installer to connect your battery bank:

Connect DC cables from the battery to the inverter

Follow the battery and inverter wiring diagrams

Use fuses or breakers to protect each battery string

Ensure proper grounding and enclosure for outdoor use

The Solis 50kW inverter is IP65-rated for outdoor installation, making it suitable for rooftop and outdoor setups.

6. Configure Battery Settings on SolisCloud

Once installed, access SolisCloud or the local inverter interface to:

Select lithium battery mode

Set charge and discharge voltages

Enable temperature protection and current limits

Monitor battery levels and performance in real time

Smart configuration helps prevent battery degradation and optimises overall system performance.

7. Applications for Lithium Battery + Solis Inverter Setups

This integration is ideal for:

Commercial solar PV systems

Agricultural and farm power setups

Warehouses and factory solar installations

Estate and residential hybrid systems

Avoid These Common Mistakes

Connecting incompatible low-voltage batteries

Skipping BMS setup or communication links

Incorrect charge/discharge settings

Not using a certified installer