Battery storage made in the Czech Republic.
Energy under control
We develop and manufacture battery storage systems for homes, businesses, municipalities and the energy sector. Our solutions are built on performance, safety, service from the manufacturer and long-term reliability.
With Resacs you get a Czech-made product, expert system design, 24/7 monitoring, manufacturer service support and AI-based smart control that helps you make the most of energy from solar PV and the grid.
Home batteries
Resacs Light 17 and Premium 17 are 51.2 V low-voltage (LV) batteries for family homes and apartment buildings. They differ in features but share the same cells and service support.
Solutions for homes →
Commercial batteries
Fully scalable high-voltage batteries from 60 kWh in a rack design. Flexibly expandable, with an optional fire-resistant cabinet.
Solutions for businesses →
Container storage
High-capacity systems for industrial sites, EV charging stations and distribution grids. They include inverters, battery modules, switchgear, air conditioning, a fire suppression system and an EMS control system.
More about containers →What we stand for
- Temperature monitoring – if the battery is outside the 5–30 °C range, we automatically notify the customer.
- At 60 °C, a resettable thermal fuse fitted to every cell limits the battery’s power (current).
- If the temperature reaches 90 °C, the fire suppression system releases an agent into the battery enclosure that displaces oxygen and cools the whole battery.
- Service, support and warranty claims handled directly in the Czech Republic by a Czech family-owned company.
- Operating data stored securely in European clouds (no servers in China).
- Up to 10-year warranty directly from the manufacturer.
- Individual components can be replaced, including cells, without replacing an expensive monoblock.
- All spare parts kept in stock for a fast on-site service response.
- Warranty and post-warranty service provided by the manufacturer.
- 24/7 remote monitoring — online overview of the system down to individual cells.
- AI-based smart energy management optimises charging and discharging according to consumption, PV generation and spot market prices.
- Peak shaving — cuts demand peaks and reduces reserved grid capacity.
- Data stored on our own secure server in the Czech Republic; communication via Modbus RTU/TCP and API.
Interested?
Request a quote
Tell us about your project — our sales team is the right place to start.
Non-binding enquiry.
