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Tesla Powerwall 3 vs Anker Solix X1: Which Battery Should You Choose?
You’ve just been quoted a battery system, and it’s not the one you expected. Maybe it’s the Anker SOLIX X1 — a name you’ve never heard of. Or perhaps it’s the Tesla Powerwall 3 — which you have heard of, but you’re wondering if it’s still worth the price tag.
No matter which option you’re considering, this is a significant investment — one that affects your household energy costs, your backup power during blackouts, and how future-proof your solar setup will be over the next decade. It’s not just about specs on a datasheet — it’s about making a decision you feel confident with.
At Lenergy, we install both the Anker SOLIX X1 and the Tesla Powerwall 3. We’re not here to push one over the other — because the best battery depends on your needs. What we’re here to do is give you a clear, side-by-side comparison so you can understand the real differences.
In this guide, you’ll learn how each system performs — from backup power to safety, to cost, to what they’re actually like to live with. By the end, you’ll know exactly which battery suits your setup best — and why.
- Why Compare the Anker Solix X1 and Tesla Powerwall 3?
- Specs at a Glance: Anker Solix X1 vs Tesla Powerwall 3
- How They Handle Backup Power and Blackouts
- Safety, Durability & Outdoor Performance
- Monitoring, Software & User Experience
- How Much Do They Cost in 2025?
- Which Battery Is Right for You?
- Final Thoughts: Trust, Flexibility, and What Really Matters
Why Compare the Anker Solix X1 and Tesla Powerwall 3?
If you’re researching solar batteries in 2025, these two names keep coming up: Anker Solix X1 and Tesla Powerwall 3.
On the surface, they seem worlds apart. One’s from a globally famous electric car company. The other? A newcomer to home batteries, best known (until recently) for making power banks and phone chargers.
So why are solar installers — including Lenergy — offering both?
Simple: they each solve different homeowner problems. And they both bring serious capability to the table.
The Tesla Powerwall 3 is sleek, powerful, and all-in-one. It has a built-in inverter, high continuous output, and backup capacity to run your whole home — all backed by a name you know. Find more information on the Tesla Powerwall 3 here.
The Anker Solix X1 is modular, flexible, and safety-first. It’s more affordable, scales up or down, and is built for harsh Aussie conditions. It’s a serious competitor, even if you haven’t heard of it yet. See our recent article on the Anker Solix X1 for more information.
If you’ve been quoted one and not the other, or you’re torn between the two, this comparison is for you. It’s not about which brand is “better” — it’s about which battery is better for you.
Specs at a Glance: Anker Solix X1 vs Tesla Powerwall 3
| Feature | Anker Solix X1 (datatsheet) | Tesla Powerwall 3 (datasheet) |
| Usable Capacity | 5–30 kWh modular (AC), up to 90–180 kWh (hybrid) | 13.5 kWh fixed |
| Power Output | varies by inverter 3 kW (5 kWh) to 6 kW (10 kWh+), hybrid: up to 12 kW | Potential DC power up to 19.5 kW |
| Charging Rate | Matches output; depends on config | 5 kW when AC coupled and up to 8 kW when DC Coupled |
| Solar Input | Hybrid version supports PV input (up to 18 kW) | 20 kW with 3 MPPTs |
| Modularity | Yes — easily scalable | No — fixed size, expansion via separate “packs” |
| CEC Approved? | Yes | Yes |
| Monitoring | Local display + app (depends on model) | Tesla app (same as Powerwall 2) |
| Cooling & Noise | 40 db (quieter) | Can be noisy typically < 50 db with a maximum of 62 db |
| Dimensions | Varies with setup | 1105 × 609 × 193 mm, 130 kg |
| Round-Trip Efficiency | 90%+ (varies by inverter) | 89% |
How They Handle Backup Power and Blackouts
| Feature | Solix X1 (Hybrid) | Powerwall 3 |
| Backup Power | Yes | Yes |
| Solar Charging During Blackout | Yes (Hybrid only) | Yes |
| Whole-Home Backup | Depends on config | Yes (single-phase only) |
| Blackout Switchover | Fast | Seamless |
Key Takeaways:
- The Powerwall 3 is built for full-home backup and solar charging in a blackout.
- The Solix X1 hybrid offers similar protection, but AC-coupled models cannot recharge until the grid is restored.
Safety, Durability & Outdoor Performance
| Feature | Solix X1 | Powerwall 3 |
| Chemistry | Lithium-ion Phosphate | Lithium-ion Phosphate |
| Fire Risk | Low | Low |
| Outdoor Rating | IP65/IP66 | IP55 |
| Operating Temp | –20°C to +55°C | –20°C to +50°C |
| Corrosion Resistance | C5-M rated (warranty excludes rust) | Flood resistant to 0.6m |
| Noise | Quiet (passive cooling) | Noisy fans (up to 62 dB) |
Bottom Line:
Solix is safer, quieter, and better suited to outdoor or coastal use. Powerwall 3 is tough, but not silent — and may need a more considered install location.
Monitoring, Software & User Experience
| Feature | Solix X1 | Powerwall 3 |
| Mobile App | Yes (functional, improving) | Yes (polished, reliable) |
| Local Display | Yes | No |
| Real-Time Monitoring | Yes | Yes |
| Smart Automation | No | Yes (Opticaster) |
| Notifications | Yes (varies by config) | Yes |
Bottom Line:
Want hands-on control or don’t love apps? Solix wins. Want automation, smooth interfaces, and smart notifications? Tesla leads.
How Much Do They Cost in 2025?
| System Size | Solix X1 (Hybrid) | Powerwall 3 |
| 13.5–15 kWh | $9,000 | $13,929.06 |
| Modular? | Yes | No |
| Includes Inverter? | Hybrid model only | Yes |
| Rebate Eligible? | Yes | Yes |
| Expansion Cost | $1,490 for an additional 5 kWh module | $6,050 for an additional 13.5 kWh powerwall |
Bottom Line:
Solix is more flexible and affordable — especially if you already have solar. Powerwall 3 makes more sense for new installs or those prioritising simplicity.
Which Battery Is Right for You?
Go Anker Solix X1 If:
- You’re looking for a more affordable option
- You want to scale over time
- You already have solar
- You want modular design and lower upfront cost
- You care about Lithium-ion Phosphate safety
- You live in a coastal or hot climate
- You want a physical display (no app needed)
Go Tesla Powerwall 3 If:
- You don’t mind paying premium prices
- You want blackout protection
- You want a new solar + battery system
- You need seamless whole-home backup
- You value Tesla’s polished app and automation
- You trust the brand’s long-standing performance
- You want to join a VPP or export to grid efficiently
Final Thoughts: Trust, Flexibility, and What Really Matters
Choosing a home battery isn’t just about specs — it’s about finding the system that fits your goals, budget, and peace of mind.
The Tesla Powerwall 3 gives you a powerful, premium experience. The Anker Solix X1 offers flexibility, value, and quiet reliability.
At Lenergy, we install both. Because the right battery isn’t the one with the flashiest name — it’s the one that actually suits you.
Ready to compare battery options for your home?
