Bluetti Apex 300 vs Growatt VITA 550
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
Growatt VITA 550 costs $1200 less. Whether that gap is worth closing depends on what you need to run.
- Bluetti Apex 300 holds 414% more energy (2764Wh vs 538Wh), so it runs the same load proportionally longer.
- Bluetti Apex 300 has 6480W more surge headroom (7680W vs 1200W) — that decides whether a fridge, pump or AC compressor will actually start.
- Growatt VITA 550 is 61.8 lb lighter (17.6 lb vs 79.4 lb).
- Bluetti Apex 300 is rated for 6,000 cycles vs 3,000 — meaningful if you cycle it daily.
Bluetti Apex 300
6000 cycles at 2764Wh — the best long-term cost-per-kWh in this list if you cycle daily. Bluetti's answer to the Elite 200 V2 at scale.
Best for: Off-grid solar setups where daily cycling makes lifespan the dominant cost.
Where it falls short:
- 79.4 lb
- Newer product with limited long-term field data
Growatt VITA 550
A tidy half-kWh unit with fast charging and a 1,200W surge that lets it start small appliances a 600W rating wouldn't suggest.
Best for: Campers who want fast charging and a bit of surge headroom at half a kWh.
Where it falls short:
- 538Wh is weekend-scale
- 3-year warranty
| Spec | Bluetti Apex 300 | Growatt VITA 550 |
|---|---|---|
| Price | $1599 | $399 |
| Capacity | 2764 Wh | 538 Wh |
| Continuous output | 3840 W | 600 W |
| Surge output | 7680 W | 1200 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 6,000 | 3,000 |
| Weight (lighter wins) | 79.4 lb | 17.6 lb |
| Max solar | 2600 W | 300 W |
| Recharge time (faster wins) | 1h 30m | 1h |
Runtime head-to-head
| Appliance | Bluetti Apex 300 | Growatt VITA 550 |
|---|---|---|
| Refrigerator | 39.2 hrs | 7.6 hrs |
| Mini fridge | 74.6 hrs | 14.5 hrs |
| Chest freezer | 29.4 hrs | 5.7 hrs |
| CPAP machine | 58.7 hrs | 11.4 hrs |
| Sump pump | 2.9 hrs | ❌ |