The fundamental limitation of a basic plug-in solar kit is timing. You generate between roughly 8am and 4pm in winter, 7am and 7pm in summer — but UK household consumption peaks in the evening. The Solarbank 2 Pro exists to close that gap.
How it works
The Solarbank sits in-line between your solar panels and your wall socket. During the day, solar generation charges the 1.6kWh LFP battery. Once full, excess generation passes through to your home. In the evening, the Solarbank discharges its stored energy. Smart bypass means you're not losing generation when the battery is full.
Installation
No electrician. No inverter compatibility check. No DC cabling. The Solarbank connects between the solar kit output and a standard UK socket. The Anker app walks you through configuration in about fifteen minutes. It's genuinely plug and play in a way that whole-home batteries are not.
The financial case
At £599–£699, it adds meaningful cost to a system already at £419–£499 for the kit. The additional annual saving is around £80–£120/year depending on usage, giving a combined system payback of four to five years.
The verdict
If you have a plug-in solar kit and you're regularly out during the day, the Solarbank 2 Pro is the logical next step. It's not cheap. It's the only practical battery expansion for plug-in solar that doesn't require an electrician.
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