Anker SOLIX C1000 Review: Gen 1 Analysis and How Gen 2 Compares

The short answer: the original Anker SOLIX C1000 is a solid 1,056Wh unit with 1,800W of output, and it is the only version of the C1000 that can add an expansion battery (taking it to 2,112Wh). But for most buyers the newer C1000 Gen 2 is the better purchase: it is lighter, charges faster, offers 2,000W, and OutdoorGearLab's testing recommends it over the original. Buy the Gen 1 only if you specifically need expansion or the built-in light, and ideally at a deep discount. Last Black Friday it sold for $499, 50% off its $999 list price, per Electrek.

Spec Sheet (Gen 1)

Specs are cross-checked against Anker's official SOLIX C1000 page; test figures come from OutdoorGearLab's review (May 2025), an independent test we did not run ourselves.

What Independent Testing Found

OutdoorGearLab scored the original C1000 66/100. It praised the fast charging, display, UPS capability, and built-in light. Its listed drawbacks: a "loud fan" (it called it "one of the loudest models tested," particularly near maximum output) and a high price. Note the charging gap: Anker's spec is a full charge in under an hour, while OutdoorGearLab measured 88 minutes on standard charging and 65 minutes with ultra-fast mode switched on.

Gen 1 vs Gen 2

Both are good value, and both have loud fans at high loads. The Gen 2 gives up expansion and the light in exchange for lower weight, faster charging, and a lower street price. See our best power stations under $500 for how it compares with the Jackery, Bluetti, and EcoFlow alternatives.

The Tradeoffs

• 1,056Wh is enough for essentials, not whole-home backup on its own, though the BP1000 expansion battery can double it.
• The fan is loud under heavy load in independent testing; it is not a unit to run in a bedroom at full output.
• Full list price is not competitive. The value case depends on a sale, which has been frequent but is not guaranteed.

What You Can Actually Run On It

Based on the measured 897Wh of usable energy:

• Mini fridge (80W average): about 11 hours
• Full-size refrigerator (150W average): about 6 hours
• CPAP, 40W without humidifier, 8-hour nights: about 2.8 nights (about 1.4 with a heated humidifier)
• Laptop charging (about 55Wh per charge): about 16 charges
• Window AC (900W): about 1 hour

Calculate your specific needs with our wattage sizing guide.

Final Verdict

The original C1000 remains a capable, well-specified unit, and its expansion option is a real advantage that the Gen 2 dropped. For most buyers, though, the Gen 2 offers more output, faster charging, and a lower price, so we would buy that unless the expansion battery matters to you. It suits budget-conscious buyers who still want serious output: apartment dwellers, campers, and CPAP users who want headroom to run a mini fridge or a space heater briefly alongside medical equipment.

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Frequently Asked Questions

Does the Anker SOLIX C1000 support an expansion battery?

The original (Gen 1) does: Anker's BP1000 expansion battery doubles capacity to 2,112Wh. The Gen 2 does not support expansion.

Should I buy the C1000 or the C1000 Gen 2?

Most buyers should choose the Gen 2. In OutdoorGearLab's July 2026 testing it was lighter (25.2 lb versus 28.65 lb), charged in 56 minutes versus 88, and cost less. Choose the Gen 1 only if you need expansion or the built-in light.

What is SurgePad and how does it work?

SurgePad is Anker's technology for briefly boosting output above the rated continuous wattage (up to 2,400W from an 1,800W base) to handle the startup surge of motor-driven appliances like fridges and pumps without tripping the unit.

Is the SOLIX C1000 worth buying at full price?

No. At the $999 list price, several competitors offer comparable or better value. Its case rests on sales: it was $499 at Black Friday 2025, and the Gen 2 has been around $429.