The EcoFlow DELTA 3 1500 is designed for users who need more stored energy than a 1kWh-class portable power station provides. It combines a 1,536Wh LFP battery with 1,800W rated AC output and supports compatible extra batteries for greater capacity. It can be used for selected home-backup and outdoor loads when their power requirements stay within the manufacturer’s limits.
Technical Specifications — European Model
| Brand | EcoFlow |
|---|---|
| Model | DELTA 3 1500 |
| Product type | Portable power station |
| Battery capacity | 1,536Wh |
| Battery chemistry | LFP (lithium iron phosphate) |
| Rated AC output | 1,800W |
| Surge output | 3,600W |
| X-Boost | Up to 2,400W for compatible loads; not the standard rated output |
| Total output ports | 13 listed by EcoFlow |
| AC outlets | 4 |
| USB-A fast charging | 2 ports, up to 18W each |
| USB-A output | 2 additional ports, up to 12W each |
| USB-C output | 2 ports, up to 100W each |
| Car output | 12.6V, 10A, 126W maximum |
| DC5521 output | 2 ports, 12.6V, up to 3A per port |
| Solar input | Up to 500W; 11–60V DC input |
| AC charging input | Up to 1,500W; approximately 1.5 hours stated for a full charge under EcoFlow’s test conditions |
| Capacity expansion | Up to 5.5kWh with compatible extra batteries |
| Cycle life | 3,000 cycles to 70% capacity, as stated by EcoFlow |
| UPS switching | Less than 15ms |
| Battery pack protection | IP54 rating stated by EcoFlow |
| Noise | EcoFlow states less than 35dB at 600W and less than 45dB at 1,200W under its test conditions |
| Dimensions | 400 × 212 × 282mm |
| Net weight | Up to approximately 16.5kg |
| App control | Supported |
| Warranty | 5 years, subject to applicable European terms |
| Official source | EcoFlow Europe — DELTA 3 1500 |
Appliance Use and Runtime
EcoFlow’s European DELTA 3 1500 product page does not provide a complete, model-specific table of appliance wattages and guaranteed runtimes. For that reason, this review does not invent wattage figures or promise runtimes. The station can be considered for selected electronics, lighting, refrigeration and other appliances only after checking each device’s rated consumption and start-up surge against the official output limits.
| Use case | What to check before use |
|---|---|
| Refrigerator or freezer | Running watts, compressor start-up surge and expected duty cycle |
| Router, modem and small electronics | Combined load and the required DC/USB/AC connection |
| Lighting and entertainment devices | Total simultaneous wattage and desired runtime |
| Kitchen or heating appliances | Continuous wattage and start-up demand; heating loads can drain the battery quickly |
Who Is It For?
The DELTA 3 1500 may suit people who need a larger portable energy reserve for selected household essentials, camping, mobile work or occasional outages. Its 1536Wh capacity is stored energy, not a promise of usable AC energy at the socket. Actual runtime depends on the load, inverter losses, temperature and battery condition.
Risks, Care and Maintenance
- Keep the station within the temperature and environmental limits in the official manual.
- Use only compatible solar panels, cables and extra batteries, and stay within the specified input limits.
- Check the starting surge of compressors, pumps and motor-driven appliances before connecting them.
- Do not overload AC outlets or use damaged cables; inspect connectors regularly.
- Follow EcoFlow’s instructions for charging, storage and long periods without use.
- Do not connect it to fixed household wiring without qualified professional advice and compliant transfer equipment.
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