HYXi HALO 3 kWh expansion battery – extra storage for your plug-in battery
Modular expansion to a total storage capacity of 18 kWh
The HYXi HALO 3 kWh expansion battery is the ideal addition to your existing HYXi HALO plug-in battery. With this extra battery module, you can easily increase your system’s storage capacity, allowing you to use even more of the solar energy you’ve generated yourself whenever it suits you. Thanks to its modular stackable design, you can effortlessly add the HYXi HALO 3 kWh expansion battery — without any complex installation or major modifications to your existing system.
Modularly expandable up to 18 kWh
Grow flexibly in line with your energy consumption
You can expand your system to a maximum of 5 battery modules, giving a total storage capacity of no less than 18 kWh. This allows you to scale your home battery flexibly in line with your energy needs. Each module provides 3.0 kWh (3014 Wh) of additional storage, based on safe and sustainable LiFePO4 cell chemistry with a lifespan of over 10,000 charge cycles.
With more storage, you can get the most out of your solar panels:
- Less energy fed back into the grid
- Use more of your own solar energy
- Take extra advantage of low (dynamic) energy prices
- Become even more independent of your energy supplier
Robust design for Dutch conditions
Floor-mounted with natural cooling
The stackable module is designed for floor mounting and fits seamlessly beneath your existing HYXi HALO. With an operating range of -20 °C to +55 °C and a permissible relative humidity of 5–95% (non-condensing), the battery operates reliably in virtually any plant room, garage or utility room. The module complies with IEC 62619 and CE standards, and comes with a 10-year manufacturer’s warranty.
Technical Specifications
- Capacity: 3.0 kWh (3014 Wh)
- Battery type: LiFePO4 (cobalt-free)
- Nominal voltage: 9.6 V
- Max. charge/discharge power: 1500 W
- Servicelife: over 10,000 charge cycles
- Max. number of modules: 5 (up to 18 kWh in total)
- Dimensions: 460 x 274 x 296.5 mm
- Weight: approx. 26 kg
- Installation: floor-mounted, stackable
- Operating temperature: -20 °C to +55 °C
- Humidity: 5–95% (non-condensing)
- Certification: IEC62619, CE
- Warranty: 10 years


