Product Evidence Page
Note: this page covers the base EcoFlow DELTA 3, not the DELTA 3 Plus. The 910 Wh measured-usable figure that appears elsewhere on the site belongs to the Plus and is not applied here.
Quick verdict
One of the most internally consistent spec sheets in the 1kWh class — but no one has independently bench-tested the base model’s usable capacity yet.
Best for buyers who want documented, non-contradictory specs and room to expand. Main strength: a documented, consistent 56-minute recharge and a clean 5 kWh expansion path. Main weakness: the headline 2,200 W X-Boost is a voltage-reduction feature, not real extra output (continuous is 1,800 W). Evidence confidence: Medium. SolarGenLab Evidence Score: 8.6/10.
Buy this if / Avoid this if
- You value a spec sheet that does not contradict itself — a documented, consistent 0–100% recharge of 56 minutes.
- You want documented battery expansion — a clean, published path to 5 kWh.
- You want a compact 1kWh LiFePO4 unit at a lower entry price than the Plus.
- You read X-Boost as extra power — the 2,200 W X-Boost is a voltage-reduction trick, not real output above the 1,800 W continuous rating.
- You need more than one solar input — it is limited to a single XT60 port.
- You want an independently measured usable-capacity figure — none is published for the base DELTA 3 (the measured 910 Wh is the Plus).
Claimed vs measured specifications
| Specification | Manufacturer claim | Independently measured | Difference | Confidence |
|---|---|---|---|---|
| Usable capacity | 1,024 Wh rated claim | Not measured for the base model Unknown | — | — |
| Continuous output | 1,800 W (X-Boost 2,200 W) claim | Unknown Unknown | — | — |
| AC recharge time | 0–100% in 56 min (consistent on EcoFlow’s page) claim | Unknown for base model Unknown | — | — |
| Expansion ceiling | Up to 5 kWh claim | Documented, consistent claim | — | Medium |
| Solar input | Single XT60 port claim | Unknown Unknown | — | — |
| Idle consumption | Unknown Unknown | Unknown Unknown | — | — |
Full specification table
| Rated battery capacity | 1,024 Wh claim |
|---|---|
| Measured usable capacity | Not measured for the base model Unknown |
| Battery chemistry | LiFePO4 claim |
| Continuous AC output | 1,800 W claim |
| X-Boost output | 2,200 W (voltage-reduction, not real extra output) claim |
| Surge output | Unknown Unknown |
| AC recharge time | 0–100% in 56 min, consistent on EcoFlow’s page claim |
| Expansion ceiling | Up to 5 kWh claim |
| Solar input | Single XT60 port claim |
| Idle draw | Unknown Unknown |
| Weight | Unknown Unknown |
| Warranty | Unknown Unknown |
| App / connectivity | Unknown Unknown |
Documented strengths
Internally consistent spec sheet. A documented, non-contradictory 56-minute recharge — unusual in this class where rivals list conflicting figures. manufacturer, cross-checked Confidence: Medium.
Clean expansion path. Documented, consistent expansion to 5 kWh. manufacturer Confidence: Medium.
Documented weaknesses
X-Boost is not extra power. The 2,200 W X-Boost figure is a voltage-reduction feature; real continuous output is 1,800 W. manufacturer, cross-checked Confidence: Medium.
Single solar input. One XT60 port limits panel configurations. manufacturer Confidence: Medium.
No independent usable-capacity test. The base model has not been bench-measured (the measured 910 Wh figure elsewhere is the DELTA 3 Plus). Unknown
Owner feedback patterns
Owner-review sample size: Unknown Unknown. We do not report recurring owner-reported patterns until we have a sufficient verified-owner sample for this exact model.
Compatible accessories
| Expansion battery | EcoFlow DELTA 3 smart extra battery (to 5 kWh) manufacturer-stated |
|---|---|
| Solar panels | Panels via the single XT60 solar input manufacturer-stated |
| Others | Unknown Unknown |
Price and retailer
Evidence sources
| Publisher | Evidence type | Model | Measurement | Accessed | Confidence | Link |
|---|---|---|---|---|---|---|
| EcoFlow (manufacturer) + SolarGenLab consistency check | Spec-sheet cross-check | EcoFlow DELTA 3 (base) | Claims are internally consistent; no independent bench test of the base model located | 31 Jul 2026 | Medium | Unknown add URL |
Update history
- 31 July 2026 — Page created (draft). Manufacturer claims cross-checked for internal consistency; no independent usable-capacity measurement exists for the base model, so it is marked Unknown.