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Best 2kWh Home Backup Pick • LiFePO4 (LFP)
EcoFlow DELTA 2 Max: Specs & Estimated Appliance Runtimes
2,048Wh with a 2,400W inverter (4,800W surge) and up to 1,000W of solar input. At about 50 lbs it's the lightest 2kWh unit on our list, and it expands to 6,144Wh.
Why Buy the EcoFlow DELTA 2 Max
- 2,400W continuous / 4,800W surge for motor loads like sump pumps
- Up to 1,000W solar input
- Expandable to 6,144Wh with two extra batteries
- Lightest 2kWh unit on our list (~50 lbs) with 6 AC outlets
Limitations to Know
- No wheels; it's a two-handle carry
- Too heavy for casual camping carry
Best 2kWh Home Backup Pick
EcoFlowLiFePO4 (LFP) • 3,000 rated cycles
EcoFlow DELTA 2 Max
Multi-day fridge + freezer, sump pumps, window AC & power tools
Capacity
2,048 Wh
AC Output
2,400W (4800W surge)
Max Solar
1000W
Weight / AC
50 lbs • 6 AC
2,048Wh with a 2,400W inverter (4,800W surge) and up to 1,000W of solar input. At about 50 lbs it's the lightest 2kWh unit on our list, and it expands to 6,144Wh.
- 2,400W continuous / 4,800W surge for motor loads like sump pumps
- Up to 1,000W solar input
- Expandable to 6,144Wh with two extra batteries
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Complete EcoFlow DELTA 2 Max Appliance Runtime Chart (All 22 Loads)
Calculated using 1,741Wh net usable AC capacity (85% inverter efficiency) and real compressor/thermostat duty cycles.
| Appliance | Running / Surge Watts | Avg Hourly Draw | EcoFlow DELTA 2 Max Estimated Runtime | Detailed Report |
|---|---|---|---|---|
| Full-Size Kitchen Refrigerator (Energy Star) | 160W (650W Surge) | ~61 Wh/hr | 25.2 hrs (~1.1 days) | Math Breakdown → |
| Chest Freezer / Deep Freezer (7–15 cu. ft.) | 120W (550W Surge) | ~38 Wh/hr | 37.8 hrs (~1.6 days) | Math Breakdown → |
| CPAP / BiPAP Machine (Standard Mode) | 45W (60W Surge) | ~45 Wh/hr | 32.8 hrs (~1.4 days) | Math Breakdown → |
| Basement Sump Pump (1/3 HP Submersible) | 800W (1800W Surge) | ~120 Wh/hr | 13.6 hrs | Math Breakdown → |
| Wood Pellet Stove (Auger, Blower & Igniter) | 135W (450W Surge) | ~115 Wh/hr | 14.2 hrs | Math Breakdown → |
| Gas / Propane Home Furnace Blower Motor | 550W (1200W Surge) | ~220 Wh/hr | 7.6 hrs | Math Breakdown → |
| Starlink Satellite Dish & Wi-Fi Router | 65W (110W Surge) | ~65 Wh/hr | 23.8 hrs | Math Breakdown → |
| 12V Portable Camping Fridge / Cooler (45L) | 45W (90W Surge) | ~16 Wh/hr | 72.5 hrs (~3.0 days) | Math Breakdown → |
| Home Fiber/Cable Modem + Wi-Fi 6 Router | 25W (35W Surge) | ~25 Wh/hr | 52.8 hrs (~2.2 days) | Math Breakdown → |
| Countertop Microwave Oven (1,000W Cooking) | 1500W (1800W Surge) | ~1500 Wh/hr | 1.2 hrs | Math Breakdown → |
| Drip Coffee Maker / Keurig Single-Serve | 1200W (1450W Surge) | ~1200 Wh/hr | 1.4 hrs | Math Breakdown → |
| Heated Electric Blanket / Mattress Pad | 65W (75W Surge) | ~46 Wh/hr | 32.2 hrs (~1.3 days) | Math Breakdown → |
| Residential Well Water Pump (1/2 HP 120V Jet Pump) | 950W (2200W Surge) | ~143 Wh/hr | 11.5 hrs | Math Breakdown → |
| Portable Electric Space Heater (Low Setting 750W) | 750W (850W Surge) | ~563 Wh/hr | 3 hrs | Math Breakdown → |
| Window / Portable Air Conditioner (5,000–8,000 BTU) | 550W (1400W Surge) | ~330 Wh/hr | 5.2 hrs | Math Breakdown → |
| Home Medical Oxygen Concentrator (5L Continuous) | 320W (500W Surge) | ~320 Wh/hr | 5.3 hrs | Math Breakdown → |
| Countertop Air Fryer / Toaster Oven (1,500W) | 1500W (1650W Surge) | ~1275 Wh/hr | 1.4 hrs | Math Breakdown → |
| Portable Induction Cooktop Burner (Medium-High) | 1300W (1600W Surge) | ~1170 Wh/hr | 1.5 hrs | Math Breakdown → |
| Aquarium / Reef Tank Heater, Canister Filter & Air Pump | 180W (250W Surge) | ~81 Wh/hr | 19.6 hrs | Math Breakdown → |
| Residential Garage Door Opener (1/2 to 3/4 HP) | 550W (1100W Surge) | ~550 Wh/hr | 3.1 hrs | Math Breakdown → |
| Laptop + External Monitor Charging | 85W (120W Surge) | ~72 Wh/hr | 21.8 hrs | Math Breakdown → |
| 4x LED Lamps + 3x Smartphones + Box Fan | 75W (110W Surge) | ~75 Wh/hr | 21 hrs | Math Breakdown → |