Anker Solix has unveiled the Solarbank 4 E5000 Pro, a beefier balcony battery that pushes far beyond the usual ”store a bit, discharge a bit” formula. The new model starts with 5 kWh of battery capacity, can scale to 30 kWh with BP5000 expansion units, and is clearly aimed at homes that want energy management, not just backup.
The Anker Solix Solarbank 4 Pro also supports up to 12 solar panels and 5,000 W of solar input, putting it in a more ambitious category than a basic balcony battery. It is designed for users who want a compact home energy system rather than a simple storage box.
Anker Solix Solarbank 4 Pro specs
Compared with the Solarbank 3 Pro, the new unit is a clear step up in almost every meaningful metric. The built-in battery jumps to 5 kWh from 2,688 Wh, and the system can be expanded to 30 kWh using BP5000 batteries. For buyers trying to stretch solar self-consumption beyond the afternoon peak, that is a much more serious proposition.
- Battery capacity: 5 kWh
- Expandable capacity: up to 30 kWh with BP5000 batteries
- Default home output: 800 W
- Grid mode and autonomous mode output: up to 2,500 W
- Solar input: 5,000 W total
- Solar panels supported: up to 12
There is also a practical upgrade in charging architecture. The Solarbank 4 Pro uses four MPPT controllers, which should help it make better use of mixed or partially shaded panel arrays. That is the kind of detail that sounds dull until your roofline stops behaving like a brochure.
Smart home features and tariff support
Anker Solix is also leaning hard into software. The new system supports dynamic tariffs, integrates through open APIs with Home Assistant and other smart home platforms, and includes a built-in display plus the company’s AI assistant, Anka. Paired with the new Anker Solix Smart Meter Gen 2, it looks less like an accessory and more like the nerve center for a house trying to spend less on electricity.
That positioning is smart. As rivals in Europe and beyond push similar all-in-one storage kits, differentiation is increasingly about control, not just battery size. The companies that win will be the ones that make solar feel automatic rather than technical.
Price, preorder and launch timing
Sales have not started yet, and Anker Solix has not announced an official release date. What it has revealed is the pricing:
- Solarbank 4 E5000 Pro: 2,000 euros
- BP5000 expansion battery: 1,400 euros each
There is already an early sign-up offer running from 12 May to 11 June 2026. People who register without obligation get a 25% discount on the Solarbank 4 E5000 Pro and BP5000, while the first buyers also receive the Smart Meter Gen 2 for free. Expect that to pull in the enthusiastic early adopters first; the rest will wait for shipping dates, real-world performance, and the usual battery-market sanity check.