EcoFlow DELTA 3 Classic vs EcoFlow RIVER 3 Max Plus

What separates these two

• CapacityThe RIVER 3 Max Plus states 858 Wh (nameplateNameplate capacity The capacity printed on the box, in watt-hours (Wh): what the battery holds when new. You get less out of it in use, because the station keeps some back to protect the battery and loses some turning it into 240 V or 12 V power.); the DELTA 3 Classic states 1,024 Wh (nameplate), 19% more.This means the DELTA 3 Classic holds more energy, so it can run the same things for longer before it needs charging.
  Sources

  DELTA 3 Classic: manufacturer page (au.ecoflow.com) read 29 Sept 2026 1024Wh (85Ah @12V)

  RIVER 3 Max Plus: manufacturer page (au.ecoflow.com) read 29 Sept 2026 858Wh

• PriceThe RIVER 3 Max Plus states $899 (Caravan RV Camping, checked 29 Sept 2026); the DELTA 3 Classic states $1,199 (Anaconda, checked 29 Sept 2026), 33% more.This means the RIVER 3 Max Plus costs less today.
• Price per WhThe RIVER 3 Max Plus states 104.8¢ per Wh; the DELTA 3 Classic states 117.1¢ per Wh, 12% more.This means the RIVER 3 Max Plus gives you more stored energy for each dollar at today's prices.
• AC output, non-stopThe RIVER 3 Max Plus states 600 W (continuousContinuous output The power the station can supply non-stop. This is the figure that decides which appliances it can run, like a 1,000 W microwave.); the DELTA 3 Classic states 1,800 W (continuous), 3 times as much.This means the DELTA 3 Classic can run bigger appliances, ones that need more power, from its 240 V outlets.
  Sources

  DELTA 3 Classic: manufacturer page (au.ecoflow.com) read 29 Sept 2026 1800W

  RIVER 3 Max Plus: manufacturer page (au.ecoflow.com) read 29 Sept 2026 3 outlets, 600W total (Surge 1200W, X-Boost 1200W)

• WeightThe RIVER 3 Max Plus states 10.8 kg (unit onlyUnit only The station by itself, without cables, chargers or a bag.); the DELTA 3 Classic states 12.1 kg (unit only, tolerance +0.3kg), 12% heavier.This means the RIVER 3 Max Plus is lighter to carry.
  Sources

  DELTA 3 Classic: manufacturer page (au.ecoflow.com) read 29 Sept 2026 12.1kg+0.3kg

  RIVER 3 Max Plus: manufacturer page (au.ecoflow.com) read 29 Sept 2026 10.8kg

• Expansion batteriesThe DELTA 3 Classic does not take expansion batteriesExpansion batteries Extra batteries made to plug into this station to add capacity.; the RIVER 3 Max Plus takes expansion batteries (up to 858 Wh in total).This means extra batteries can be added to the RIVER 3 Max Plus for more capacity; the DELTA 3 Classic doesn't take them.
  Sources

  DELTA 3 Classic: manufacturer page (au.ecoflow.com) read 29 Sept 2026 No

  RIVER 3 Max Plus: manufacturer page (au.ecoflow.com) read 29 Sept 2026 - Expandable up to 858Wh with a wire-free connection

Can't be compared as the brands list themCan't be compared The two brands give this figure in different ways, or only one brand gives it. For example, one counts battery charges until 80% of the capacity is left and the other until 70%. Set side by side, the numbers would mislead, so both are shown and neither is put ahead.

• Solar inputThe DELTA 3 Classic states up to 500 W. The brand doesn't give this figure for the RIVER 3 Max Plus.This means the two can't be compared on this until both brands publish it.
  Sources

  DELTA 3 Classic: manufacturer page (au.ecoflow.com) read 29 Sept 2026 500W Max

• Wall charging, empty to fullThe DELTA 3 Classic states 60 min (no fast modeAC charging Charging from a household power point. A fast-mode figure uses the brand's quickest charging setting, so it isn't compared with standard charging. mentioned, full or part charge not stated, charging at 1,400 W). The brand doesn't give this figure for the RIVER 3 Max Plus.This means the two can't be compared on this until both brands publish it.
  Sources

  DELTA 3 Classic: manufacturer page (au.ecoflow.com) read 29 Sept 2026 1400W (60 mins)

• Cycle lifeThe RIVER 3 Max Plus states 3,000 cycles (until 80% of the original capacity is left). The brand doesn't give this figure for the DELTA 3 Classic.This means the two can't be compared on this until both brands publish it.
  Sources

  RIVER 3 Max Plus: manufacturer page (au.ecoflow.com) read 29 Sept 2026 LiFePO4, 3000 cycles to 80% capacity

• Stated warrantyThe DELTA 3 Classic states 3 years (plus 2 more years on conditions the brand sets). The brand doesn't give this figure for the RIVER 3 Max Plus.This means the two can't be compared on this until both brands publish it.
  Sources

  DELTA 3 Classic: manufacturer page (au.ecoflow.com) read 29 Sept 2026 3+2 years (Includes 3-year standard warranty and 2-year extended warranty available upon EcoFlow App registration)

• AC surgeThe DELTA 3 Classic states 3,600 W (how long it lasts not stated); the RIVER 3 Max Plus states 1,200 W (how long it lasts not stated). Neither brand says how long its surgeSurge A short burst above the continuous rating, for appliances that need a kick to start, like a fridge compressor or a power tool. It lasts from a fraction of a second to a few seconds. lasts, so they aren't compared.This means the two numbers were measured in different ways, so setting one against the other would mislead.
  Sources

  DELTA 3 Classic: manufacturer page (au.ecoflow.com) read 29 Sept 2026 3600W

  RIVER 3 Max Plus: manufacturer page (au.ecoflow.com) read 29 Sept 2026 3 outlets, 600W total (Surge 1200W, X-Boost 1200W)

A difference is listed above only when both brands measure a figure the same way and the gap is at least: capacity: 10% or more; price: 10% or more; price per Wh: 10% or more; AC output, non-stop: 15% or more; weight: 8% or more; 12 V car socket: any difference; solar input: 20% or more; wall charging, empty to full: 20% or more; cycle life: 20% or more; stated warranty: any difference; UPS switchover: 5 ms or more; expansion batteries: one has it and the other doesn't; AC surge: 15% or more. Every comparison on this site uses the same gaps.

Fridge runtime for both

How long each would run an example fridge, a Dometic CFX5 45, with no solar and no driving. Its manufacturer says it uses 0.76 Ah an hour at 12 V when it is 32 °C outside and 4 °C inside. The brands don't publish some of the figures this needs. Where someone has tested the station, their result is used; otherwise both use the same ranges, taken from tests of other stations.

The middle estimates are 5 hours apart.This means the DELTA 3 Classic is likely to run the fridge for longer, but that one unknown figure could close the gap.

The biggest unknown is the station's own drawStation's own draw Power the station uses itself while an outlet is switched on: its screen, its electronics and the circuit that makes 12 V or 240 V. Few brands publish it. Over 24 hours it can add up to as much as a small fridge uses. with the 240 V outlet on. No brand publishes it and no test of this station was found, so 10–26 W is assumed. On its own, it can change the DELTA 3 Classic's answer by up to 19 hours, which is more than the gap between the two. The brand doesn't list a 12 V socket12 V car socket A cigarette-lighter style socket that runs 12 V gear, like a camping fridge, directly. Its rating is in amps (A): a 10 A socket supplies up to about 120 W. for the DELTA 3 Classic and RIVER 3 Max Plus, so their fridge runs from the 240 V outlet through the fridge's mains adapterMains adapter The plug-in power supply that turns 240 V from an outlet into the 12 V a fridge runs on. It loses some energy as heat, and so does the station making the 240 V..

Try another fridge, add solar or driving, or change the assumed ranges:

Loading the runtime tool…

Charging paths

“Not stated” means the brand's website and manual don't give that figure (checked 29 Sept 2026).

All the specs side by side

Capacity is the nameplate figure in watt-hours (Wh), the one on the box. AC output is the power a station can supply non-stop, not a short burst. Weight is the station on its own. A figure measured another way is shown with a note saying how, and isn't compared with the others.

Where this pair sits

Price record

Every price

What each shop charges for the station on its own, cheapest first. Kits (the station sold with extras, like a solar panel) are on each product's page and don't count here.

What neither brand tells you

These figures would help answer the questions above, but neither brand gives them (checked 29 Sept 2026):

• Usable capacityUsable capacity How much of the box capacity you can actually draw out. Most brands don't publish it, so the box figure is the only one that can be compared.: how much of the nameplate capacityNameplate capacity The capacity printed on the box, in watt-hours (Wh): what the battery holds when new. You get less out of it in use, because the station keeps some back to protect the battery and loses some turning it into 240 V or 12 V power. you can actually use. The fridge runtime above uses test results for how much comes out of the socket instead.
• The station's own drawStation's own draw Power the station uses itself while an outlet is switched on: its screen, its electronics and the circuit that makes 12 V or 240 V. Few brands publish it. Over 24 hours it can add up to as much as a small fridge uses. with the 12 V socket12 V car socket A cigarette-lighter style socket that runs 12 V gear, like a camping fridge, directly. Its rating is in amps (A): a 10 A socket supplies up to about 120 W. on: the fridge runtime above uses a test of the station if one was found, otherwise a range of 1–12 W.
• How much of the capacity comes out of the 12 V socket12 V car socket A cigarette-lighter style socket that runs 12 V gear, like a camping fridge, directly. Its rating is in amps (A): a 10 A socket supplies up to about 120 W.: the fridge runtime above uses a test of the station if one was found, otherwise a range of 75–92%.
• How long the AC surgeSurge A short burst above the continuous rating, for appliances that need a kick to start, like a fridge compressor or a power tool. It lasts from a fraction of a second to a few seconds. lasts: without it, two surgeSurge A short burst above the continuous rating, for appliances that need a kick to start, like a fridge compressor or a power tool. It lasts from a fraction of a second to a few seconds. figures can't be compared.
• 12 V car socket12 V car socket A cigarette-lighter style socket that runs 12 V gear, like a camping fridge, directly. Its rating is in amps (A): a 10 A socket supplies up to about 120 W..