Bluetti vs EcoFlow: Spec-by-Spec at the Two Sizes That Matter
Bluetti and EcoFlow are the two brands most shoppers end up cross-shopping, and most "vs" articles resolve the question with adjectives. We're going to do it with the spec sheets, at the two capacity classes people actually buy: ~1 kWh (the home-outage sweet spot) and ~2–3 kWh (multi-day/RV class). Current-generation models only — both brands' 2025–26 lineups moved to LiFePO4 across the board, so the old chemistry caveats are gone and the fight is on numbers.
Round 1 — The 1 kWh class: Elite 100 V2 vs Delta 3 Classic
These two are as close to a controlled experiment as retail gets: identical capacity, identical chemistry, near-identical output.
| Spec | Bluetti Elite 100 V2 | EcoFlow Delta 3 Classic |
|---|---|---|
| Capacity | 1,024 Wh | 1,024 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Continuous output | 1,800 W | 1,800 W |
| Surge | 3,600 W | 3,600 W |
| UPS switchover | 10 ms | 10 ms |
| Fast charge (published) | 0–80% in ~45 min; ~70 min full | 0–80% in ~56 min; ~1 hr full — effectively a tie |
| Notable extras | ~35% smaller than prior gen — best-in-class footprint | 100 W USB-C output |
| Price at publication | $449 (list $619) | $499 (list $699) |
| $ per Wh (at publication) | $0.44 | $0.49 |
Verdict: on the sheet, this is a price fight between near-twins. At publication prices, the Bluetti Elite 100 V2's $50 advantage and smaller footprint win it; if the discounts flip next week — and in this category they flip constantly — the verdict flips with them. Buy whichever is cheaper the day you're buying; you give up essentially nothing either way.
Elite 100 V2 price → Delta 3 Classic price →
Round 2 — The big class: Elite 300 vs Delta 3 Max
Here the two brands made genuinely different bets, so the choice is real.
| Spec | Bluetti Elite 300 | EcoFlow Delta 3 Max |
|---|---|---|
| Capacity | 3,014 Wh — 47% more energy | 2,048 Wh |
| Chemistry | LiFePO4 | LiFePO4 |
| Continuous output | 2,400 W | 2,400 W |
| Surge / boost | 4,800 W surge | 3,400 W (X-Boost) |
| Fast charge (published) | — | 0–80% in ~1.1 hr |
| RV readiness | TT-30 RV port + 12V/30A DC built in | standard AC/DC ports |
| Price at publication | $1,099 (list $1,499) | $899 (list $1,199) |
| $ per Wh (at publication) | $0.36 | $0.44 |
Verdict: the Bluetti Elite 300 is the better buy per watt-hour by a wide margin ($0.36 vs $0.44), carries a higher surge rating, and its native TT-30 port makes it the obvious RV pick. The Delta 3 Max counters with $200 less out the door and faster recharging — the right call if your outages are short but frequent, where charge speed matters more than tank size. For hurricane-season, multi-day thinking: the bigger tank wins.
Elite 300 price → Delta 3 Max price →
Brand-level differences that survive the spec sheet
- Ecosystem bet: EcoFlow's lineup leans into fast charging and app polish; Bluetti's leans into capacity per dollar and RV/off-grid ports. Neither is wrong — they're aimed at different outages.
- Both are LiFePO4 now. The 3,000+ cycle chemistry is standard across both brands' current generations, so longevity is no longer a differentiator — price per watt-hour is.
- Discount whiplash is the norm. Every price in this article was a "limited time deal" at publication. The honest advice: decide on the class and the spec floor first, then buy whichever of the two is discounted that day.