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Bluetti Elite 300 sizing guide
Frost & Sullivan certified as the world's smallest 3 kWh class unit — a full 3,014 Wh / 2,400 W in a 58 lb body, no expansion path. Here's exactly what it runs, how long, and which outages it covers — computed, not marketed.
0-100% in 78 min AC (0-80% in 70 min) · 58 lb · 2× AC, 1× NEMA TT-30 (RV), 12V/30A DC.
What the Elite 300 runs — and for how long
| Appliance | Running | Runs it? | Approx. runtime |
|---|---|---|---|
| Refrigerator (modern) | 150 W (1,200 W surge) | yes | ~52 h |
| Chest Freezer | 100 W (1,000 W surge) | yes | ~78 h |
| CPAP Machine (no humidifier) | 40 W | yes | ~68 h |
| CPAP with Heated Humidifier | 60 W (95 W surge) | yes | ~57 h |
| Oxygen Concentrator | 350 W (600 W surge) | yes | ~7.8 h |
| Space Heater (1500 W) | 1,500 W | yes | ~1.8 h |
| Window AC (8,000 BTU) | 715 W (1,250 W surge) | yes | ~5.4 h |
| Window AC (12,000 BTU) | 1,100 W (1,800 W surge) | yes | ~3.5 h |
| Gas Furnace Blower (1/2 HP) | 800 W (2,350 W surge) | yes | ~6.8 h |
| Microwave (1000 W cooking) | 1,200 W | yes | ~2.3 h |
| Sump Pump (1/3 HP) | 800 W (1,500 W surge) | yes | ~17 h |
| Sump Pump (1/2 HP) | 1,050 W (2,150 W surge) | yes | ~13 h |
| Well Pump (1/2 HP) | 1,000 W (2,100 W surge) | yes | ~18 h |
Runtime uses each load's duty-weighted average draw against 90% of the rated capacity — conservative on purpose. Cyclic loads (fridges, pumps) run far longer than running-watts × capacity would suggest.
Outages the Elite 300 covers
Common questions
What can the Bluetti Elite 300 run?
With 2,400 W of continuous output and a 4,800 W surge rating, the Bluetti Elite 300 runs refrigerator (modern), chest freezer, cpap machine (no humidifier), cpap with heated humidifier, oxygen concentrator, space heater (1500 w), and more. Its 3,014 Wh battery sets how long: a fridge for roughly a day, a CPAP for several nights.
How long will the Bluetti Elite 300 run a refrigerator?
A modern refrigerator averages about 53 W (it cycles ~35% of the time), so the Bluetti Elite 300's 3,014 Wh runs one for roughly 52 h before recharging.
Specs: Manufacturer published specifications (approximate; confirm on the current product page) (compiled 2026-08-10). Informational only — a computed sizing estimate from published appliance-wattage charts and manufacturer station specs. It is not an electrical guarantee. For hardwired or whole-home backup, transfer switches, or any permanent install, consult a licensed electrician.