The Anker Solix X1 has been generating buzz since its UK launch, and we've now installed enough of them to share our honest assessment. If you're considering a premium battery storage system that doesn't compromise on aesthetics, the X1 is probably on your shortlist — here's what you need to know.
What Is the Anker Solix X1?
Anker is best known for portable power stations and phone chargers, but they've made a serious push into home battery storage with the Solix X1. It's a high-voltage lithium iron phosphate (LFP) battery system that pairs with their own hybrid inverter — and it's designed to look good doing it.
The X1 lineup includes:
- X1 Battery Module — 5 kWh per module, stackable up to 6 modules per inverter (30 kWh per system)
- Solix X1 Hybrid Inverter (Power Module) — Available in single-phase (3.68 kW, 4.6 kW, 5 kW, 6 kW) and three-phase variants (5 kW, 8 kW, 10 kW, 12 kW)
- Parallel Capability — Up to 6 systems can be paralleled together for a maximum of 180 kWh / 36 kW
- Anker App — Cloud-based monitoring and smart home integration
Anker Solix X1 Specifications
Here are the key specs for the Anker Solix X1 system:
| Specification | Value |
|---|---|
| Battery Module Capacity | 5 kWh per module |
| Max Modules Per Inverter | 6 modules (30 kWh) |
| Max Parallel Systems | 6 systems (180 kWh / 36 kW) |
| Inverter Options | Single-phase (3.68–6 kW) and Three-phase (5–12 kW) |
| Depth of Discharge | 100% |
| Round-Trip Efficiency | Up to 90.2% |
| Warranty | 10 years |
| Cell Chemistry | Lithium Iron Phosphate (LFP) |
| Operating Temperature | -20°C to 55°C |
| Backup Switchover | <20ms |
| IP Rating | IP65 / IP66 |
| Noise Level | <35 dB (ambient <40°C), <40 dB (ambient >40°C) |
What We Love About the Anker Solix X1
Exceptional Build Quality
This is where Anker really stands out. The X1 looks and feels premium — brushed metal finish, clean lines, minimal branding. Unlike some battery systems that you want to hide in a garage, the X1 can sit in a utility room or hallway without looking out of place. Several of our customers have specifically chosen Anker because of how it looks.
100% Depth of Discharge
Most batteries only let you use 90-95% of their rated capacity. The X1 gives you the full 100%, which means a 10 kWh system (2 modules) actually delivers 10 kWh usable — not 9 kWh like some competitors. Over time, this adds up.
Excellent Scalability
The modular design is a real strength. You can start with a single 5 kWh battery and scale up to 30 kWh per inverter. For larger homes or commercial applications, you can parallel up to 6 complete systems together, reaching a maximum of 180 kWh storage and 36 kW output. This flexibility means the system can grow with your needs.
Single-Phase and Three-Phase Options
Anker offers both single-phase inverters (3.68 kW, 4.6 kW, 5 kW, and 6 kW models) and three-phase inverters (5 kW, 8 kW, 10 kW, and 12 kW models). This makes the X1 suitable for everything from standard UK homes to larger properties with three-phase supplies.
Fast Backup Switchover
If you want blackout protection, the X1 switches to backup power in under 20 milliseconds. That's fast enough that most electronics won't notice the grid dropping out. Combined with the pass-through charging, you get genuine whole-home backup capability.
Excellent App Experience
Anker's app is one of the best we've used. Clean interface, real-time data, historical graphs, tariff scheduling — it all works smoothly. You can also integrate with Home Assistant and other smart home platforms if you want to get fancy.
Where It Could Improve
Price Premium
There's no getting around it: the Anker Solix X1 costs more than budget alternatives like Fox ESS. A 10 kWh system (2 batteries + inverter) typically runs £8,500–£10,000 installed, compared to £6,500–£7,500 for similar-capacity Fox ESS systems. You're paying for the premium build and brand.
Round-Trip Efficiency
At up to 90.2% round-trip efficiency, the X1 is competitive but not class-leading. Some competitors claim slightly higher efficiency figures, though real-world performance often varies from spec sheets.
Relatively New in UK Market
Anker launched the X1 in the UK in 2024. While the product itself is excellent, as a newer entrant to the UK market, their installer network and support infrastructure is still developing. We haven't had any issues requiring support escalation yet, but it's something to be aware of when choosing a battery system.
Who Is the Anker Solix X1 Best For?
Based on our installations across Eastbourne, Brighton, and the wider East Sussex area, here's who the X1 suits best:
- Design-conscious homeowners — If the battery will be visible, the X1 is hard to beat aesthetically
- Large storage requirements — With up to 30 kWh per system and 180 kWh in parallel configurations, this scales to almost any need
- Three-phase properties — The dedicated three-phase inverter options are well-designed for larger homes
- Backup power priority — The fast switchover and full home backup capability is class-leading
- Tech enthusiasts — The app and smart home integrations are genuinely excellent
- Those willing to pay for quality — It's not the cheapest, but you do get what you pay for
Who Might Prefer Something Else?
- Budget-focused buyers — Fox ESS or similar offers 80% of the capability at 70% of the price
- Those prioritising established support networks — If having a well-established UK support infrastructure is important to you, consider brands that have been in the market longer
- Efficiency maximisers — If achieving the absolute highest round-trip efficiency is your priority, compare carefully
Real-World Performance in East Sussex
We've been tracking our Anker X1 installations and the results have been impressive:
- Round-trip efficiency: Consistently hitting 88-90% — close to the spec sheet
- Summer performance: Fully charged by midday most sunny days (with typical 4 kWp solar arrays)
- Winter utility: Overnight charging on Octopus Flux is adding £40-60/month in savings
- App reliability: No significant connectivity issues across our install base
- Noise levels: Essentially silent — suitable for indoor installation near living spaces
One customer in Eastbourne shared with us that their Anker X1 system has reduced their grid import by over 70% compared to pre-installation — and they particularly appreciate being able to show visitors the sleek battery setup in their utility room.
Installation Considerations
If you're considering the Anker Solix X1, here's what to plan for:
- Space: A 2-module (10 kWh) system requires approximately 1.1m tall × 0.6m wide × 0.2m deep
- Location flexibility: Indoor or outdoor installation (IP65/IP66 rated). Works in garages, utility rooms, or even external walls
- Existing solar: Can AC-couple with existing systems or DC-couple with new installations
- DNO notification: We handle all G98/G99 paperwork as part of the installation
- Internet: Requires WiFi connection for app functionality and firmware updates
- Three-phase option: If you have a three-phase supply, the dedicated three-phase inverters (5-12 kW) provide balanced power across all phases
The Verdict
The Anker Solix X1 is the battery system we recommend when customers ask for the best they can get. It's not cheap, but it delivers on every front: build quality, scalability, and user experience. With 5 kWh modules that stack up to 6 per inverter (30 kWh), and the ability to parallel up to 6 systems for 180 kWh total capacity, it can handle almost any residential or light commercial application.
The availability of both single-phase and three-phase inverter options makes it versatile for UK properties of all sizes. If you're investing in home battery storage and want something that will perform reliably for 10+ years while looking good doing it, the X1 is an excellent choice.
That said, not everyone needs the premium option. If budget is the primary concern, there are capable alternatives that make more financial sense. We're happy to discuss which system fits your specific situation during a survey.
Get a Quote
Interested in the Anker Solix X1 for your home? We can assess your property, discuss your energy usage, and provide a detailed quote. Contact us for a free, no-obligation survey.