The cost of a good home battery can vary depending on various factors, such as the battery's capacity, brand and model, the technology used, and any additional installation costs. In general, the cost of a home battery ranges between €3,000 and €15,000.

The battery's capacity is measured in kilowatt-hours (kWh) and determines how much energy the battery can store. The higher the capacity, the higher the price of the battery. A typical home battery can range from 3 kWh to 20 kWh or more.

Additionally, there may be installation costs calculated by a professional installer. These costs can vary depending on the complexity of the installation and any necessary adjustments to your home's electrical system.

It's important to note that there may also be various subsidy options and schemes that can help reduce the cost of a home battery. It is wise to inquire about local subsidies and financial incentives available in your area.

To obtain an accurate quote for a specific home battery and installation, it is advisable to request quotes from different suppliers and installers. They can provide you with detailed information on costs based on your specific situation and needs.