Not twins. BLUETTI’s Elite 100 mini is a compact ~1 kWh / 700 W box already on sale. EcoFlow’s RIVER 520 Gen4 is a lighter ~512 Wh / 500 W IFA 2026 camping battery — price still unknown on the press materials we checked.
BLUETTI Elite 100 mini
EcoFlow RIVER 520 Gen4
| Spec | BLUETTI Elite 100 mini | EcoFlow RIVER 520 Gen4 |
|---|---|---|
| Capacity | 1004.8 WhHigher | 512 Wh |
| AC output | 700 W continuous AC; Power Lifting up to 1400 W on compatible resistive loads (BLUETTI)Higher | 500 W continuous AC; up to 1000 W with X-Boost (IFA 2026 press) |
| Weight | 23.6 lb / approx. 10.7 kg | Approximately 4.6 kg (about 10.1 lb) — pressLighter |
| Chemistry | LiFePO4 (UltraCell LFP — BLUETTI) | LFP (EcoFlow IFA press) |
| Cycle life (mfr.) | 6000+ cycles to 80% (BLUETTI) | Unknown on the IFA press sheets we checked |
| Max solar input | 350 W max DC/PV (12–60 V, 10 A) per user manual tables | Unknown on the IFA press sheets we checked |
| Expandable | No | No expansion claimed in the IFA materials we checked |
| Charge temp. | 0–40°C / 32–104°F | Unknown — check manual when published |
| Discharge temp. | −20–40°C / −4–104°F | Unknown — check manual when published |
| Warranty (mfr. copy) | BLUETTI global warranty marketing — read the policy at purchase | Unknown on IFA press |
Energy vs carry weight
Elite 100 mini stores about 2× the watt-hours of the RIVER 520 Gen4, at roughly 2× the weight (23.6 lb vs ~10.1 lb). If the constraint is a weekend fridge + router, Wh wins. If the constraint is a daypack, kilograms win.
Inverter class
BLUETTI lists 700 W continuous (Power Lifting to 1400 W on compatible resistive loads). EcoFlow lists 500 W continuous with X-Boost to 1000 W. Mid-size coffee makers and microwaves are outside both comfort zones on rated watts alone.
Price honesty
Elite 100 mini: USD $429 standalone on BLUETTI’s launch materials. RIVER 520 Gen4: price unknown in the IFA releases we checked — we will not invent one.
Official store — BLUETTI Elite 100 mini Amazon search (no ASIN)
Official store — EcoFlow RIVER 520 Gen4 Amazon search (no ASIN)
Sources
BLUETTI US Elite 100 mini PDP + PR Newswire (2 Sep 2026) + user manual. EcoFlow / PR Newswire RIVER Gen4 IFA release + secondary IFA coverage (channelnews, Trusted Reviews, The Verge). Checked 20 September 2026.