Anker SOLIX C300 vs Growatt INFINITY 1500
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
Anker SOLIX C300 costs $920 less. Whether that gap is worth closing depends on what you need to run.
- Growatt INFINITY 1500 holds 425% more energy (1512Wh vs 288Wh), so it runs the same load proportionally longer.
- Growatt INFINITY 1500 has 2400W more surge headroom (3000W vs 600W) — that decides whether a fridge, pump or AC compressor will actually start.
- Anker SOLIX C300 is 28.9 lb lighter (8.6 lb vs 37.5 lb).
Neither of these will start a sump pump or well pump — both surge below the ~3,400W those motors need. If home backup with pumps is your use case, look at higher-surge models instead of either of these.
Anker's smallest. 288Wh at $179 with three USB-C ports — aimed squarely at people charging modern devices, not running appliances.
Best for: Content creators and travelers with a bag full of USB-C gear.
Where it falls short:
- 300W output is device-only territory
- 100W solar input
A capable mid-size that flies under the radar. Solid 2,000W output and fast charging, let down mainly by a shorter warranty than the big brands.
Best for: Value hunters who want 1.5kWh and don't need the longest warranty.
Where it falls short:
- 3,000W surge is modest for the output
- 3-year warranty vs 5 from the majors
| Spec | Anker SOLIX C300 | Growatt INFINITY 1500 |
|---|---|---|
| Price | $179 | $1099 |
| Capacity | 288 Wh | 1512 Wh |
| Continuous output | 300 W | 2000 W |
| Surge output | 600 W | 3000 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 8.6 lb | 37.5 lb |
| Max solar | 100 W | 800 W |
| Recharge time (faster wins) | 1h | 1h 50m |
Runtime head-to-head
| Appliance | Anker SOLIX C300 | Growatt INFINITY 1500 |
|---|---|---|
| Refrigerator | ❌ | 21.4 hrs |
| Mini fridge | 7.8 hrs | 40.8 hrs |
| Chest freezer | ❌ | 16.1 hrs |
| CPAP machine | 6.1 hrs | 32.1 hrs |
| Sump pump | ❌ | ❌ |