Published October 20, 2026. Every spec below comes from EcoFlow’s US store (us.ecoflow.com) or Anker SOLIX’s US store (ankersolix.com), checked on October 20, 2026. Runtime figures are arithmetic (watt-hours ÷ watts), not lab tests. This is not a ranked list.
People who search “EcoFlow vs Anker” usually want one of two things: a quick sense of how the two brands differ, or help picking a specific unit. The honest answer to “which is better” is that it depends on your load. Both brands now sell lithium iron phosphate (LFP) stations at the same rough sizes, and the differences that matter show up inside each size class: continuous AC watts, how much solar the unit accepts, whether you can add batteries later, and how the warranty is structured.
This page lines the two lineups up by size: about 300 Wh, about 1 kWh, about 2 kWh, and home backup. If you already know you want a whole-home-class unit, our model-level page Anker SOLIX F3800 Plus vs EcoFlow DELTA Pro goes deeper on that matchup, so it is only summarized here.
Quick answer: how EcoFlow and Anker SOLIX differ
- Both lineups are LFP. Every model compared below lists LiFePO4/LFP cells on the maker page.
- Small class: EcoFlow’s RIVER 3 Plus lists 600W of AC output. Anker’s C300 lists 300W. Capacity is nearly the same (286 Wh vs 288 Wh). Anker’s C300 showed “Sold Out” on ankersolix.com on October 20, 2026.
- 1 kWh class: Anker’s C1000 Gen 2 lists more AC output (2,000W vs 1,800W). EcoFlow’s DELTA 3 Plus lists more solar input (1,000W vs 600W) and can take extra batteries. Anker says the C1000 Gen 2 cannot be expanded.
- 2 kWh class: Same 2,048 Wh and the same 2,400W rated output on EcoFlow’s DELTA 3 Max and Anker’s C2000 Gen 2. Anker lists 800W solar input and an expansion battery. EcoFlow lists 500W solar input for the DELTA 3 Max.
- Home backup: Both brands sell 120V/240V units with expansion batteries (EcoFlow DELTA Pro 3, Anker SOLIX F3800 Plus).
- Warranty: Anker’s US warranty table lists 60 months for each Anker unit compared here. EcoFlow lists 5 years for some models and “3+2 years (subject to registration)” for others, including the DELTA 3 Max. Details are below.
How to use this comparison (it depends on your load)
Start with the job, not the brand:
- Continuous watts: add up the running watts of everything that will be on at the same time. The station’s continuous AC rating has to be higher than that total. A bigger battery does not raise this limit.
- Surge watts: motors and compressors (fridges, pumps) draw a short start-up spike. Check the device’s nameplate or manual. Don’t guess.
- Hours: battery Wh ÷ average load W gives a rough ceiling before conversion losses. Real runtime will be lower, and neither maker publishes one loss figure that fits every load.
- Recharge: if you plan to rely on solar, the maximum solar input matters as much as battery size.
- Growth: if you may need more capacity later, check whether the exact model takes an expansion battery. Within both brands, some models can and some can’t.
For job-specific sizing, see fridge and freezer runtime, CPAP backup battery, and router and modem battery backup.
About 300 Wh: EcoFlow RIVER 3 Plus vs Anker SOLIX C300
| Spec (maker page) | EcoFlow RIVER 3 Plus | Anker SOLIX C300 |
|---|---|---|
| Capacity | 286Wh | 288Wh |
| AC output | 600W total (surge 1200W, X-Boost 1200W) | 300W (600W surge) |
| Battery | LiFePO4, 3000 cycles to 80% capacity | LFP |
| Solar input (max) | 220W | 100W |
| UPS switchover | <10 ms | 10 ms |
| Expansion | Up to 858Wh with EB300 (286Wh) or EB600 (572Wh) extra battery | Not listed on the maker page |
| App | LED, app, and software alerts | Anker app via Bluetooth or Wi-Fi |
| Weight | 10.4 lb | Not shown on the maker page checked |
| Warranty (US) | 5 years (EcoFlow US warranty table) | 5-year warranty (product page); 60 months (Anker US warranty table) |
| Store status, Oct 20, 2026 | Listed on us.ecoflow.com | “Sold Out” on ankersolix.com |
The main difference here is AC output. A 300W-continuous station can’t run a 400W load at all, no matter how full the battery is. At this size, both units suit phones, laptops, a router, or lights. For a modem and router during an outage, both makers list a 10 ms-class UPS switchover. Anker also sells a DC-only C300 DC. Its warranty in Anker’s US table is 36 months, not 60.
About 1 kWh: EcoFlow DELTA 3 Plus vs Anker SOLIX C1000 Gen 2
| Spec (maker page) | EcoFlow DELTA 3 Plus | Anker SOLIX C1000 Gen 2 |
|---|---|---|
| Capacity | 1024 Wh | 1,024Wh |
| AC output | 1800W total (surge 3600W); X-Boost 2200W | 2,000W (3,000W peak) |
| Battery | LFP, 4000 cycles to 80+% capacity | 80% capacity after 4,000 cycles |
| Solar input (max) | 2 ports, 11V–60V, 500W max each | 600W max (11–60V MPPT) |
| AC charging | 1500W | 1,200W max; 1,600W UltraFast (enabled in the Anker app) |
| UPS switchover | <10ms | 10 ms |
| Expansion | 1–5kWh with DELTA 3, DELTA 2, DELTA 2 Max, or DELTA Pro 3 Extra Battery (via XT150 cable) | None. Anker’s FAQ points buyers who need expansion to the original C1000 |
| App | App (TOU / Storm Warning Alert) | Anker app; Standard and Time-of-Use modes |
| Weight | Approx. 27.6 lb | 24.9 lb |
| Warranty (US) | 5 years | 60 months (Anker US warranty table) |
Read this class by what you’ll add later. If you might want 2 kWh or more someday, the DELTA 3 Plus lists expansion and the C1000 Gen 2 does not. If you need more continuous output from a single box that stays this size, Anker lists 2,000W against EcoFlow’s 1,800W (EcoFlow’s X-Boost mode runs some resistive loads up to 2,200W, per its page). The original Anker C1000 (1,056Wh, 1,800W, expandable to 2,112Wh per its page) showed “Sold Out” on ankersolix.com on October 20, 2026. Our older Anker SOLIX C800 Plus feature review covers the smaller C800 Plus. Its ankersolix.com product URL now redirects to the C1000 Gen 2.
About 2 kWh: EcoFlow DELTA 3 Max vs Anker SOLIX C2000 Gen 2
| Spec (maker page) | EcoFlow DELTA 3 Max | Anker SOLIX C2000 Gen 2 |
|---|---|---|
| Capacity | 2048Wh (51.2V, 40Ah) | 2,048Wh (51.2V, 40,000mAh) |
| AC output | 2400W total (4800W surge); X-Boost 3400W | 2,400W (4,000W peak); TT-30R outlet |
| Battery | LFP (LiFePO4) | LFP, 4,000 cycles |
| Solar input (max) | 500W | 800W (11–60V, 17A max) |
| UPS switchover | <10ms | 10 ms |
| Expansion | Not listed for DELTA 3 Max; the DELTA 3 Max Plus (3000W, 6000W surge) lists 2–10kWh | Up to 4kWh with one BP2000 (Gen 2) expansion battery (2,048Wh) |
| App | Wi-Fi 2.4GHz / Bluetooth 5.0; EcoFlow app with Storm Guard mode | Anker app; Standard, Time-of-Use, Storm Guard, and Fast Charging Plan modes |
| Weight | 20.3 kg (+0.4 kg) | 41.7 lb (18.9 kg) |
| Warranty (US) | 5 years total: 3-year standard + 2-year extended with EcoFlow App registration | 60 months (Anker US warranty table) |
On paper, these two match on capacity and rated output. The listed differences are solar input (800W Anker vs 500W EcoFlow DELTA 3 Max), surge rating (4,800W EcoFlow vs 4,000W Anker), and expansion. Anker lists a matching expansion battery for the C2000 Gen 2. EcoFlow lists expansion for the DELTA 3 Max Plus, a separate model. If your plan is a chest freezer plus a few circuits through an outage, chest freezer power station runtime shows how to do the math. For the older EcoFlow 2 kWh unit, see our EcoFlow DELTA 2 Max page.
Home backup: EcoFlow DELTA Pro 3 vs Anker SOLIX F3800 Plus
| Spec (maker page) | EcoFlow DELTA Pro 3 | Anker SOLIX F3800 Plus |
|---|---|---|
| Capacity | 4096Wh | 3,840Wh |
| AC output | 4000W continuous at 120/240V; X-Boost up to 6000W | 6000W max total; 120V/240V (NEMA L14-30R up to 6000W) |
| Battery | LFP; 80% capacity after 4000 cycles | LFP, 3,000+ cycles |
| Solar input (max) | 2600W total: High-PV 30–150V 1600W + Low-PV 11–60V 1000W | 1600W max per port, 2 ports (3,200W total per Anker’s comparison) |
| Expansion | Page headline: 4–48 kWh (its comparison table also shows “Up to 36kWh, 12kW”; confirm your configuration with EcoFlow) | Up to 6 × BP3800 expansion batteries, 3.84kWh each |
| Weight | Approx. 51.5 kg | 136.7 lb |
| Warranty (US) | 5 years (warranty table); product page says 3-year standard + 2-year extended with EcoFlow App registration | 5-year warranty; 60 months (Anker US warranty table) |
Arithmetic on Anker’s numbers: 3.84 kWh + (6 × 3.84 kWh) = 26.88 kWh with the maximum six expansion batteries. At this size, the real decision is usually about wiring: transfer switch or home panel, 240V loads, and whether a generator will feed the unit. Read transfer switch safety before you plan any panel connection. For a deeper model-level comparison of Anker’s F3800 Plus with EcoFlow’s earlier DELTA Pro, see Anker SOLIX F3800 Plus vs EcoFlow DELTA Pro.
Runtime arithmetic at a 100W average load
This is division, not a test: listed capacity ÷ 100W. Inverter and conversion losses will make real runtime shorter. Neither maker publishes one loss figure for every load.
| Model | Listed capacity | Wh ÷ 100W (ceiling, before losses) |
|---|---|---|
| EcoFlow RIVER 3 Plus | 286Wh | about 2.9 hours |
| Anker SOLIX C300 | 288Wh | about 2.9 hours |
| EcoFlow DELTA 3 Plus | 1024Wh | about 10.2 hours |
| Anker SOLIX C1000 Gen 2 | 1,024Wh | about 10.2 hours |
| EcoFlow DELTA 3 Max | 2048Wh | about 20.5 hours |
| Anker SOLIX C2000 Gen 2 | 2,048Wh | about 20.5 hours |
| Anker SOLIX F3800 Plus | 3,840Wh | about 38.4 hours |
| EcoFlow DELTA Pro 3 | 4096Wh | about 41.0 hours |
At the same capacity, both brands give the same arithmetic ceiling. What separates them for a given job is output, surge, solar input, and expansion, not Wh alone.
Warranty, app, and expansion: the brand-level differences
Warranty
Anker’s US warranty table lists 60 months for the C300, C1000, C1000 Gen 2, C2000 Gen 2, and F3800 Plus. It lists 36 months for the C300 DC. Anker’s registration page says registering “activates 5-year hassle-free protection” for its portable power stations. (Anker warranty table, Anker warranty registration)
EcoFlow’s US warranty policy is model by model. The RIVER 3 Plus, DELTA 3 Plus, and DELTA Pro 3 are listed at 5 years. The DELTA 3 Max and DELTA 3 Max Plus are listed at “3+2 years (Subject to registration)”. The plain RIVER 3 is listed at 24 months. The DELTA Pro 3 product page also describes its 5 years as 3 standard plus 2 extended with app registration. Register the unit in the EcoFlow app either way. (EcoFlow US warranty policy)
App
Both brands run their stations through a phone app. EcoFlow lists time-of-use and Storm Warning or Storm Guard features on the DELTA 3 pages. Anker lists Time-of-Use mode on the C1000 Gen 2, and Storm Guard plus a Fast Charging Plan on the C2000 Gen 2. If app data location matters to you, Is EcoFlow a Chinese company? covers what EcoFlow’s privacy policy says about where app data is stored.
Expansion
Expansion depends on the model, not the brand. EcoFlow lists extra-battery support on the RIVER 3 Plus, DELTA 3 Plus, DELTA 3 Max Plus, and DELTA Pro 3. Anker lists it on the C2000 Gen 2, F3800 Plus, and the original C1000, but not on the C1000 Gen 2. Check the exact model before you count on adding batteries later.
Battery chemistry
Every unit compared here lists LFP (LiFePO4) cells. Cycle ratings differ by model, from 3,000 to 4,000 cycles where the maker states them. For why LFP matters for daily cycling, see LiFePO4 vs NMC battery chemistry.
Where to check current price and stock
Prices and stock change often, so they are not listed on this page. Check the current listing before you buy.
- EcoFlow RIVER 3 Plus on EcoFlow US
- EcoFlow DELTA 3 Plus on EcoFlow US
- EcoFlow DELTA 3 Max series on EcoFlow US
- Anker SOLIX C1000 Gen 2 on Amazon
- Anker SOLIX C2000 Gen 2 on Amazon
For the home-backup units, the F3800 Plus vs DELTA Pro page has current links. Comparing a third brand too? See BLUETTI vs EcoFlow vs Jackery and EcoFlow alternatives.
FAQ
Is Anker SOLIX or EcoFlow better?
It depends on the load and the size class. At about 1 kWh, Anker’s C1000 Gen 2 lists more AC output, and EcoFlow’s DELTA 3 Plus lists more solar input and expansion. At about 2 kWh, the two list the same capacity and rated output, and Anker lists more solar input. Match the continuous watts, surge, solar input, and expansion to your job first.
Are EcoFlow and Anker SOLIX power stations LiFePO4?
Yes, for every model compared on this page. Each maker page lists LFP or LiFePO4 cells.
Which has the longer warranty?
Anker’s US table lists 60 months for each Anker unit here. EcoFlow lists 5 years for the RIVER 3 Plus, DELTA 3 Plus, and DELTA Pro 3, and 3+2 years subject to registration for the DELTA 3 Max. On paper, the totals match at five years for most pairs. The difference is whether part of the term depends on registering the unit.
Can I add batteries later?
On some models. The EcoFlow DELTA 3 Plus and Anker C2000 Gen 2 list expansion batteries. The Anker C1000 Gen 2 does not, per Anker’s FAQ.
Robert DeWitt writes about off-grid power gear for Off Grid Power Boom. Based in Arizona, he uses portable power stations, solar panels, and battery systems regularly in extreme heat—focusing on practical runtime, charging speed, reliability, and real-world usability for camping, RV trips, and home backup.
Editorial focus: portable power stations & solar generators, solar panel setups, batteries/inverters, and off-grid preparedness.