HeatingAlso called: fish tank heater, submersible aquarium heater, aquarium water heater
Two numbers decide whether a power station runs an aquarium heater, and readers arrive using them interchangeably. Watts are the ceiling on what the inverter can hold at any instant — this load needs 100 W of them while it runs. Watt-hours are how much energy the battery holds. A machine can have plenty of one and not enough of the other.
Of the 26 station records we publish — every model we hold a page for, with its US and EU versions counted separately — 26 run it, 0 are a tight fit and 0 are out of reach. Each of those is a calculation against that machine’s continuous output, its surge ceiling and its inverter waveform — not a lookup table — and the reasoning is on every row.
The three numbers a power station is judged against
Running power100 W50–300 W Official spec · verified 2026-08-09 · high confidence
Start-up surgeNot found in the sources we checked no figure to date
Duty cycle100% Official spec · verified 2026-08-09 · low confidence
The band is the spread across real models in this class, not a tolerance. Size against the top of it unless you know which unit you own.
Start-up figure: No start-up figure found
We read 5 documents for this class on 2026-08-09 and found no published start-up figure in them. This library does not invent one: where a start-up check is required, the engine caps the verdict below green rather than assuming the machine starts cleanly.
Official spec · verified 2026-08-09 · appliance record
This page answers an electrical question, not a fishkeeping one.
Where this page puts hours on a pairing, that number is how long a power station’s battery lasts running this heater’s wattage — an electricity number, not a judgment about whether the animals in the tank are safe. Hours here means hours of power, nothing more.
Where a verdict below reads a tight fit — the amber triangle — read it as don’t rely on this pairing, not as a compromise that will probably hold. It means the load doesn’t clear that station’s numbers with confidence — it isn’t a passing grade with an asterisk.
What to do when the power goes out is a fishkeeping question, and it’s outside what this site answers — a tank’s own care sheet, a local fish store, or an aquarium-keeping community can say what a given species and setup actually need. If keeping the heater running through an outage matters enough to plan for, the usual paths are a generator sized for the load or a written outage plan; this page can help with the electricity math for either one.
What actually decides it
A resistive load: what it says is what it draws
A heating element is a wire. It takes its rated watts the moment it is switched on and holds them until it is switched off — there is no motor to spin up, so there is no inrush to plan around. That makes the verdict simple and unforgiving: either the inverter holds the running watts continuously or it does not, and nothing about the machine gets easier after the first second.
There is no start-up figure, and there should not be
Nothing here has a locked rotor to publish a figure for: a heating element, a switch-mode supply and a variable-speed drive all start without an inrush worth rating. The absence of a start-up number on this record is a fact about the hardware rather than a hole in the library, so the engine does not cap any verdict below for it — which is the opposite of what it does when a figure is genuinely missing.
Which power stations run it
Every row is a live calculation against that machine's continuous output, surge ceiling and
inverter waveform. Of the 26 station
records we publish — US and EU versions counted separately — 26 run it, 0 are a tight fit and 0 are out of reach. The percentage is
this load as a share of that machine's continuous output; anything past 82% drops out of the green. Rows are ordered by verdict, then by
price — cheapest first inside each band.
2.3 h — on a full charge, with the station’s own 9.0 W idle draw in the denominatorWe have found no published surge rating for the US 120 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $239 · checked 2026-08-17 Show the working →
EcoFlow RIVER 3 PlusEcoFlow · US 120 V600 W continuous · 1,200 W surge ceilingRuns it17%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 4 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide. $279 · checked 2026-08-17 Show the working →
7.3 h — on a full charge, with the station’s own 18 W idle draw in the denominator $549 · checked 2026-08-17 Show the working →
EcoFlow DELTA 3 PlusEcoFlow · US 120 V1,800 W continuous · 3,600 W surge ceilingRuns it5.6%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 3 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide. $719 · checked 2026-08-17 Show the working →
14 h — on a full charge, with the station’s own 10 W idle draw in the denominatorWe have found no published surge rating for the US 120 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $899 · checked 2026-08-17 Show the working →
8.3 h — on a full charge, with the station’s own 22 W idle draw in the denominator $999 · checked 2026-08-17 Show the working →
EcoFlow DELTA 2 MaxEcoFlow · US 120 V2,400 W continuous · 4,800 W surge ceilingRuns it4.2%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 5 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide. $1,049 · checked 2026-08-17 Show the working →
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 3 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide.We have found no published surge rating for the US 120 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $1,279 · checked 2026-08-17 Show the working →
EcoFlow DELTA Pro 3EcoFlow · US 120 V4,000 W continuous · 8,000 W surge ceilingRuns it2.5%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: 4 of EcoFlow’s own published documents, read 2026-08-08, carry no depth of discharge or inverter efficiency for the US 120 V build, so there is no defensible usable-capacity figure to divide. $2,799 · checked 2026-08-17 Show the working →
2.3 h — on a full charge, with the station’s own 9.0 W idle draw in the denominatorWe have found no published surge rating for the EU 230 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €219 · checked 2026-08-17 Show the working →
Anker SOLIX C300Anker SOLIX · EU 230 V300 W continuous · 600 W surge ceilingRuns it33%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €269.99 · checked 2026-08-01 · 17 days ago Show the working →
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €279 · checked 2026-08-17 Show the working →
EcoFlow RIVER 3 PlusEcoFlow · EU 230 V600 W continuous · 1,200 W surge ceilingRuns it17%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €299 · checked 2026-08-01 · 17 days ago Show the working →
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €519 · checked 2026-08-17 Show the working →
7.5 h — on a full charge, with the station’s own 10 W idle draw in the denominatorWe have found no published surge rating for the EU 230 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €579 · checked 2026-08-17 Show the working →
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU build, so there is no defensible usable-capacity figure to divide.We have found no published surge rating for the EU build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €599 · checked 2026-08-17 Show the working →
EcoFlow DELTA 3 PlusEcoFlow · EU 230 V1,800 W continuous · 3,600 W surge ceilingRuns it5.6%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €849 · checked 2026-08-17 Show the working →
EcoFlow DELTA 2 MaxEcoFlow · EU 230 V2,400 W continuous · 4,800 W surge ceilingRuns it4.2%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €949 · checked 2026-08-17 Show the working →
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU build, so there is no defensible usable-capacity figure to divide.We have found no published surge rating for the EU build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €999 · checked 2026-08-01 · 17 days ago Show the working →
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €999 · checked 2026-08-17 Show the working →
16 h — on a full charge, with the station’s own 13 W idle draw in the denominatorWe have found no published surge rating for the EU 230 V build. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €1,149 · checked 2026-08-17 Show the working →
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €1,799 · checked 2026-08-17 Show the working →
EcoFlow DELTA Pro 3EcoFlow · EU 230 V4,000 W continuous · 8,000 W surge ceilingRuns it2.5%
100 Wh per hour — averaged over this load’s duty cycleNo runtime in hours: we have found no depth of discharge or inverter efficiency for the EU 230 V build, so there is no defensible usable-capacity figure to divide. €3,299 · checked 2026-08-17 Show the working →
The cheapest US 120 V machine in the list that runs an aquarium heater outright, and it holds it at 2.3 h.
$239 · price checked 2026-08-17
The buy link is in the bar at the bottom of the screen — one action per page, and it
goes to the merchant we last checked the price at.
What changes the numbers
Mains standards on recordUS 120 V · EU 230 VThe figures above are recorded per mains standard, because the same appliance class is built differently on 120 V and 230 V. Where only one standard is on record, the ranking still lists machines from both regions — each row states its own.
Everything else we hold on this load
Each figure carries the tier it came from and the date it was checked. Sizing guidance is
kept apart from measured draw on purpose: one says what the machine pulls, the other says
what a manufacturer or a standard thinks you should buy for it.
Sizing guidance — not a draw figure
Minimum continuous output122 W Derived from official coefficients · verified 2026-08-09 · medium confidence
A sizing figure, not a draw: it is what this class needs a machine to be RATED at, headroom included.
100 W while it is running, and 50–300 W across the models in this class. Those are different questions and most pages answer only the first. The running figure decides whether a machine can hold it; the start-up figure decides whether it can get it going at all, and it is usually the one that fails. We read 5 documents for this class on 2026-08-09 and found no published start-up figure in them.
What size power station do I need for an aquarium heater?
For an aquarium heater, the BLUETTI Elite 30 V2 (US 120 V) is the cheapest machine in our library that runs it, at 600 W continuous and $239 against a running draw of 100 W. That is a verdict computed from this load’s running watts, its start-up demand and the inverter waveform — not a rule of thumb about doubling the wattage. 26 of 26 machines clear it.
How long will a power station run an aquarium heater?
It depends entirely on the machine, which is the part most pages skip. Against an aquarium heater at 100 W of running draw, our figures put the BLUETTI Elite 30 V2 at about 2.3 h, and the Jackery Explorer 300 Plus at about 2.1 h. Those hours come from usable-capacity figures derived from each manufacturer’s own published usable-capacity coefficients — depth of discharge and inverter efficiency where a brand states them separately, with each machine’s idle draw in the denominator — not from dividing a nameplate watt-hour number by a label wattage. Most machines in the list carry no hours at all: we hold nothing for those builds that makes a usable-capacity figure defensible, so those rows give an energy rate instead of a number we would have had to invent.
Which power stations run an aquarium heater?
26 of the 26 we hold, listed above cheapest-first within each verdict band, starting with the BLUETTI Elite 30 V2. All 26 of them run an aquarium heater. Every one of those is a live calculation against that machine's own record, and opening a row shows the working.
26 of 26 machines run itBLUETTI Elite 30 V2 · from $239