Self-consumption kit 18 panels 8 kVa three-phase with storage

SOFAR Solar BTS-5K High-Voltage Lithium Battery – 5.12 kWh for Solar Installation with Three-Phase Inverter

Optimize your photovoltaic system with the SOFAR Solar BTS-5K (5.12 kWh) high-voltage battery: a plug-and-play modular solution designed for residential and commercial installations. Thanks to its LiFePO₄ (lithium-iron-phosphate) technology, it ensures an initial capacity of 5.12 kWh, high efficiency, and excellent durability.

Compatible with SOFAR three-phase hybrid inverters (notably HYD and ME series), this battery operates at a nominal voltage of 400 VDC (range 350-435 V) and can be expanded up to ~20 kWh by assembling multiple modules.

Key Features:

• Capacity: 5.12 kWh (per module)
• Nominal voltage: 400 V DC, range 350-435 V
• Efficiency and reliability: lithium-iron-phosphate technology, active cell balancing, modular design
• Easy installation: pre-assembled cables, plug-and-play design, IP65 protection rating (indoor/outdoor installation possible)
• Expandable: up to 4 modules in series for ~20 kWh storage.

Why Choose It?

This battery is ideal for homes or small businesses looking to increase self-consumption, add storage capacity after initial installation, or benefit from backup power. Its modular format allows you to start with 5.12 kWh and add more as needed.

Uses / Needs This Kit Addresses

• A well-insulated single-family home, but with energy-intensive equipment (heating, heat pump, large appliances, garage, workshop) in three-phase.
• A household with high daytime consumption (machines, teleworking, cooking, air conditioning): this kit covers a large part of consumption.
• A geographical area with reasonably good sunlight and a well-oriented roof (ideally south / south-east / south-west) to optimize solar production.
• A desire to reduce energy bills and/or prepare for rising electricity prices.
• Mixed use: solar production + storage + use outside production hours (evening, night) thanks to the battery.
• An owner or user in a light non-residential building (workshop, office, small business) connected in three-phase, wishing to produce and consume their own electricity.
• A household sensitive to sustainability, ecology, and property value enhancement.

Specific Information for Belgian Customers - Bebat Tax

As part of our commitment to regulatory compliance and environmental responsibility in Belgium, we would like to inform our customers that the purchase of a Sofar Solar BTS 5K battery is subject to a mandatory environmental contribution.

An amount of €119.50 excl. VAT must be added for each battery purchased, as a direct contribution to Bebat, the organization responsible for battery and accumulator management in Belgium. This measure is in compliance with current Belgian environmental legislation.

Important: When purchasing a lithium battery, please add the corresponding product "Bebat Environmental Contribution Sofar Solar BTS 5K" according to the number of batteries you order. Otherwise, we will recalculate and invoice the amount after purchase.

Here is the reference list and corresponding contribution rates!

This tax only applies to Belgian customers.

More information here!