Anker SOLIX Our score 7.3/10 #2 of 4 small for real capacity
Anker SOLIX C300
Updated
A 9.1 lb station that works best as a very large USB-C power bank, with three AC outlets for small loads up to 300 W.
Independent tests put this portable power station's usable capacity at 234 Wh, 81% of the rated 288 Wh (the median of 2 tests).
Real capacity
234of 288 Wh
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CNET
83%
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OutdoorGearLab
80%
AC output
300 W
More than 0 of the 3 other small models we review. 600 W surge.
Cost per usable Wh
–
No store price checked yet.
No price checked yetWeight
9.1 lb
26 usable Wh per lb
Battery
LiFePO4
Long-life chemistry
Warranty
5 years
Wall charge
–
To full, maker’s figure
How much of the 288 Wh do you get?
Each bar is the full rated capacity. Blue is what the tester measured coming out of the AC outlets; the striped end is what was lost.
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CNET 238 Wh · 83%
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OutdoorGearLab 230 Wh · 80%
How long will it run your devices?
Add what you want to power and see how long the Anker SOLIX C300 lasts on its tested 234 Wh, counting the power it uses on itself and any solar panels you add.
2 more results we found but don't count
| Tester | Result | Why it's not counted |
|---|---|---|
| techtest.org (Michael Barton) Nov 26, 2024 | 214 Wh 74% | EU unit (230 V), cross-check only |
| techtest.org (Michael Barton) Nov 26, 2024 | 272 Wh 94% | EU unit (230 V), cross-check only |
Our score: 7.3 out of 10
Worked out from the tested capacity and the specs on this page, compared with the other models we track. Capacity, power and charging are compared with the 4 small models; battery, build and features with all 37. Price isn't part of it. How we score.
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Capacity and power 35% of the score 7.9
What goes into capacity and power Measure This model Score Tested usable capacity 60% 234 Wh 9.4 Continuous AC output 25% 300 W 5.6 AC surge 15% 600 W 5.8 Compared with the 4 small models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
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Charging 25% of the score 6.4
What goes into charging Measure This model Score Wall charge to full 40% Not known Left out Max solar input 35% 100 W 5.6 UPS switchover 25% 10 ms 7.5 Compared with the 4 small models we track. Scores run from 5 to 10; 7.5 is the middle of the group. Measures we have no figure for are left out.
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Battery and build 25% of the score 7.6
What goes into battery and build Measure This model Score Battery type 30% LiFePO4 10.0 Cycle life to 80% 25% 3,000 cycles 5.7 Warranty 25% 5 years 8.5 Usable Wh per lb 20% 26 Wh/lb 5.5 Compared with all 37 models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
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Features 15% of the score 7.0
What goes into features Measure This model Score Expandable battery 25% No 5.0 AC + USB-C outlets 20% 6 7.8 USB-C max output 15% 140 W 9.4 240 V output 15% No 5.0 App control 15% Yes 10.0 Wheels 10% No 5.0 Compared with all 37 models we track. Scores run from 5 to 10; 7.5 is the middle of the group.
Pros and cons
Pros
- Three USB-C ports, two of them at 140 W, so it can charge a laptop at full speed.
- Light at 9.1 lb, easy to carry with one hand.
- Battery backup (UPS) mode, with a 10 ms switchover according to Anker.
- LiFePO4 battery rated for 3,000 cycles, with a 5-year warranty.
Cons
- Delivered about 81% of its rated capacity, below the 86% median of the models we track.
- Only 300 W from the AC outlets: fine for a laptop, lights or a fan, not for a coffee maker or microwave.
- Solar input tops out at 100 W, so recharging from the sun is slow.
- Not expandable.
Who it's for
Anyone who mainly needs to charge laptops, phones and cameras, or run lights and a small fan, away from an outlet, and wants something light.
Who should skip it
Skip it if you need to run anything over 300 W or keep a fridge going in an outage. A 1,000 Wh unit weighs about 25 lb but gives you nearly four times the usable energy.
Features
- Battery backup (UPS) mode : yes
- Takes extra batteries : no
- LiFePO4 battery : yes
- Solar input, 100 W : yes
- Car charging : not published
- 240 V output : no
- RV outlet (TT-30) : no
- App control : yes
- Wheels : no
How it compares with other small models
| Model | Usable | Delivered | Price | Value |
|---|---|---|---|---|
| Anker SOLIX C300 288 Wh rated | 234 Wh | 81% | – | No price checked yet |
| UDPower C400 256 Wh rated | 221 Wh | 86% | $169.99 | Pricey |
| EcoFlow RIVER 3 Plus 286 Wh rated | 218 Wh | 76% | $299 | Pricey |
| BLUETTI Elite 30 V2 288 Wh rated | 232 Wh | 80% | $289.99 | Pricey |
Questions
How much usable power does the Anker SOLIX C300 have?
About 234 Wh. That's the median of two independent tests on US units: CNET measured 238 Wh and OutdoorGearLab 230 Wh, against a rated 288 Wh.
What's the 600 W figure Anker quotes?
That's SurgePad, a boost mode for heating loads like a hair dryer or kettle. It isn't a true surge rating, and Anker says not to use it for precision devices. The continuous AC rating is 300 W.
Is the C300 the same as the C300 DC?
No. The C300 DC has no AC outlets and a 3-year warranty. This page covers the AC model.
Full specs
From the maker's US manual or product page unless noted. Each value links to where we found it.
Capacity and battery
- Maximum with extra batteries
- Not expandable
Output and ports
- AC surge
- 600 W Anker calls this SurgePad, a boost mode for heating loads, so it may not be a true surge rating.
- ankersolix.com (source for AC surge)
- Boost mode (heating loads only)
- 600 W Heating loads only, such as a hair dryer. Not for precision devices.
- cdn.shopify.com (source for Boost mode (heating loads only))
Charging
- Wall charge to full
- Not published
- Car charging input
- Not published
Size and build
Warranty and certification
- Certifications
- Not published
Where this data comes from
Capacity figures come from the independent testers linked above. We record their numbers, the date and the load, and link to their reports; the testing is theirs. Specs come from Anker SOLIX's own US documents, and we note where they disagree with each other or with test results. Prices are checked by hand on the brand's US store.