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The short answer
Skip combustion engines where safe outdoor placement is unavailable. EcoFlow RIVER 2 Pro suits light loads; BLUETTI AC200L and Jackery Explorer 2000 v2 hold more energy. Check appliance demand, building rules and recharge access.
Last updated October 2026
EcoFlow RIVER 2 Pro (768 Wh)EcoFlow RIVER 2 Pro (768 Wh)
BLUETTI AC200LBLUETTI AC200L
Jackery Explorer 2000 v2Jackery Explorer 2000 v2Best generator for apartment: Start with one safety fact. A gas or propane generator is a combustion engine. It must never run indoors. It must never run in a garage, even with the door open.
CPSC guidance also places portable engine generators outdoors, at least 20 feet from homes, with exhaust aimed away. A balcony that cannot meet that rule is not a safe spot.
So this guide compares three battery power stations instead. They store energy rather than burn fuel on site. We cover capacity, output, storage and building rules.
EcoFlow RIVER 2 Pro (768 Wh)EcoFlow RIVER 2 Pro (768 Wh)
Our verdict:
Small stored-power plan
Low-demand plug-in backup where a smaller energy budget fits.
Keep in mind: 800 W output and 768 Wh storage limit appliance starts and duration; verify the exact variant.
View on AmazonThe RIVER 2 Pro is the smallest pick here. EcoFlow's US product page lists 768 Wh of capacity. It lists 800 W of output.
Those two numbers answer different questions. The 800 W figure is a power limit. It caps how much your devices can draw at one time. The 768 Wh figure is stored energy.
It sets how long that draw can last.
Here is plain arithmetic from those specs. Watts times hours gives watt-hours. So 768 Wh divided by a steady 800 W is about 0.96 hours. That is a ceiling, not a runtime promise.
The sources here give no conversion loss data. Real runtime will depend on the load and the unit.
This pick suits a short list of light loads. Think of devices whose combined draw sits well below 800 W. You should confirm each device's own label first. It also suits a home with tight storage, since it is the lowest-capacity unit here.
The drawback is clear. Its capacity is less than half of the other two picks. If your list includes a motor appliance, you need its running and starting watts. Without them, you cannot tell if 800 W is enough.
EcoFlow lists 1600 W surge in its AC specifications.
Check the exact model name before you buy. EcoFlow also sells a separate RIVER 2 Pro 700 variant. Its specifications differ, so do not mix them up. The 768 Wh and 800 W figures apply only to the model on the linked US page.
The page we checked does not support claims about battery lifespan, noise, warranty or medical devices. If you need power for medical equipment, ask the device maker and your care team. Do not rely on a general buying guide for that choice.
BLUETTI AC200LBLUETTI AC200L
Our verdict:
Battery backup, no engine
A stored-energy plan for suitable plug-in loads without a combustion engine at use.
Keep in mind: Runtime depends on energy use and losses; a recharge source is needed after depletion.
View on AmazonThe AC200L is a larger unit. BLUETTI's product page lists 2,048 Wh of battery capacity. It lists 2,400 W of rated AC output from 120 V US outlets. The page also describes solar and AC recharging.
That is the highest rated output of the three picks. It is also the largest listed capacity, though only slightly above the Jackery. Using the same arithmetic, 2,048 Wh divided by 2,400 W is about 0.85 hours at full rated output. At lower loads, the arithmetic ceiling grows.
Again, real runtime depends on losses the sources do not state.
This pick suits a longer load list. It may fit someone whose combined running watts sit near 2,000 W. It also suits buyers who want a solar option, since BLUETTI describes one. Solar still depends on a panel that fits this unit and a spot with real sun.
The drawback is size. A 2,048 Wh pack needs more storage room than the RIVER 2 Pro. You must also move it between charging and use. BLUETTI lists 3600 W surge in its AC specifications.
So a high rated output does not prove a motor appliance will start.
The outlets are 120 V. That matters for any appliance that needs a different voltage. A basic adapter cannot create a voltage the unit does not supply. Check every appliance label for its voltage before you plan around this unit.
Rated output also does not settle plug fit. Look at the receptacle types on the unit. Then compare them with your appliance plugs. Use cords that match the maker's instructions.
Jackery Explorer 2000 v2Jackery Explorer 2000 v2
Our verdict:
Movable stored energy
A single stored-power unit for a verified set of plug-in loads.
Keep in mind: Stored energy is finite; solar input and panel compatibility need separate checks.
View on AmazonThe Explorer 2000 v2 lands close to the AC200L in stored energy. Jackery's product page lists 2,042 Wh of battery capacity. It lists 2,200 W of rated AC output. Its US AC outlets are 120 V.
Compared with the AC200L, capacity is nearly the same. The gap is just 6 Wh. Rated output is 200 W lower. For many load lists, that output gap will not matter.
It matters only when your combined draw lands between 2,200 W and 2,400 W.
The arithmetic ceiling at full rated output is about 0.93 hours. That figure is 2,042 divided by 2,200. Lower loads give a longer ceiling. Losses are not stated in the sources, so treat it as rough.
This pick suits someone whose load list stays clearly under 2,200 W. It also suits buyers who want a similar energy budget to the AC200L. Then other details, like the shape of your storage spot, can guide the choice.
The drawback is a lower output ceiling than the AC200L. Check the exact panel and charging instructions before choosing a solar setup. So do not plan on solar for this unit until you read its own current documents. Jackery lists 4400 W surge in its AC specifications.
Output stops when the battery runs out. You then need a recharge source. The 120 V outlet rule also applies here. An appliance that needs another voltage will not run from these outlets.
Engine generators make carbon monoxide. CPSC guidance says to keep portable units outdoors, at least 20 feet from homes, with exhaust aimed away. The CPSC carbon monoxide guidance also says never use one indoors or in a garage. Open doors do not make a garage safe.
If your only outdoor spot cannot meet that rule, do not use a combustion unit. This guide does not recommend one in that case. If you do have a suitable outdoor spot, a home generator guide may fit better. See our best generator for home page.
The CPSC portable generator safety alert adds more steps for engine units. Run it on a dry surface. Never touch it with wet hands. Shut it down and let it cool before refueling.
Never backfeed power into a wall outlet. Install CO alarms, and get to fresh air if one sounds.
Write down each device you truly need during an outage. Read the running watts from each label. Add every device that will run at the same time. Call that total R.
Motor appliances can draw more when they start. Find each one's total starting watts from its own documents. The extra amount is the starting figure minus the running figure. If that result is negative, count it as zero.
If only one motor starts at a time, add the largest extra amount to R. If several motors might start together, add the extra amounts for every one of them. Do not assume motors never start together. Also do not add a full starting figure on top of R.
That counts the same motor twice.
Then compare your result with the unit's rated output. EcoFlow lists 1600 W surge in its AC specifications. BLUETTI lists 3600 W surge in its AC specifications. Jackery lists 4400 W surge in its AC specifications.
So a close result is not a safe margin. For fridge-specific planning, see our best generator for refrigerator guide.
Watts measure power at one moment. Watt-hours measure stored energy over time. The Department of Energy style guide notes that watts times hours gives watt-hours. It also notes that 1,000 watts equals one kilowatt.
Some labels list volts and amps instead of watts. Volts times amps gives volt-amps. That equals watts only when the power factor is known. If a label gives no power factor, do not treat volt-amps as watts.
To estimate hours, divide capacity in watt-hours by your steady load in watts. The result is a ceiling. Our sources do not list conversion losses for these units. Real hours will be lower or need their own test data.
All three picks list 120 V US outlets. An appliance that needs a different voltage cannot run from them. A basic adapter cannot create a missing voltage. Check every plug type against the unit's receptacles too.
The product figures are only part of a fit check. A full check needs running watts, total starting watts, voltage, receptacle type and the hours you need. If any piece is missing, the answer stays open.
Transfer equipment links backup power to a home panel. Generac explains that the generator, switch, inlet, panel and circuit design must all match. Installation and service belong to licensed electrical trades, per Generac's manual transfer guidance. That guidance covers engine generators, not these battery units.
In a rental, you may not control the panel. Do not change building wiring yourself. Do not bypass any protection device. Ask your landlord and a licensed electrician before any panel work.
Plugging approved devices into the unit's own outlets avoids panel changes.
Read your lease before you buy. Look for terms about batteries, chargers, generators or stored fuel. Ask your property manager or board what is allowed. They set the rules for your building.
Think about where the unit will live. The two larger picks hold over 2,000 Wh each. They need more room than the 768 Wh pick. Follow each maker's instructions on placement and storage conditions.
Ask whether shared storage, like a locker, is allowed.
Plan your cord routes before an outage. Keep cords out of doorways and halls. Use cords that match the maker's instructions. Tell everyone at home which outlets the unit will feed.
A battery helps only if it is charged when the outage starts. Top it off on a regular schedule. Wall charging is common to all three, but check each unit's own manual for its methods. BLUETTI's page describes both solar and AC recharge for the AC200L.
Each recharge method has its own input limits and required parts. A published charging time applies to its stated source and conditions. So do not count on solar until you confirm a compatible panel. Balcony sun and building rules on panels also need checking.
We used manufacturer US product pages for every product figure. That includes 768 Wh and 800 W for the RIVER 2 Pro. It includes 2,048 Wh and 2,400 W for the AC200L. It includes 2,042 Wh and 2,200 W for the Explorer 2000 v2.
We did not test these units. EcoFlow lists 1600 W surge in its AC specifications. BLUETTI lists 3600 W surge in its AC specifications.
Jackery lists 4400 W surge in its AC specifications. Makers can change specifications, so read the current page before you buy.
No safe outdoor spot means no combustion generator. Choose a battery unit instead. The RIVER 2 Pro fits a short, light list that stays under 800 W. The AC200L fits a longer list up to 2,400 W, with solar described.
The Explorer 2000 v2 fits a list under 2,200 W with similar storage. Finish the full fit check before you decide.
List only the devices that you can connect directly. A plug-in lamp is different from an apartment's fixed wiring. Do not try to feed a wall socket from a battery unit. Check the equipment instructions for each permitted connection.
A unit with AC outlets is not permission to alter building wiring.
Next, decide where the unit will sit during use. Keep the maker's ventilation space and charging rules in view. Do not block a doorway or the route out of the room. Ask about building limits before you buy a large battery.
A product page does not describe your lease or the building's storage rules.
Write down how you will recharge after the stored energy runs out. A large battery without a usable recharge source still has a finite role. For a short outage, that role may cover your main needs. For a longer outage, reduce optional use before relying on a second full charge.
Treat a sunny window as a location to assess, not a promised solar input.
Only if the spot meets CPSC guidance. That means outdoors, at least 20 feet from homes, with exhaust aimed away. Many balconies sit right against the building, so they may not qualify. Never run one indoors or in a garage.
If no spot qualifies, choose battery backup instead.
These units store energy instead of burning fuel. Still, follow each maker's own manual for indoor placement, airflow and storage conditions. Our sources list capacity and output, not placement rules. Check your lease and building rules as well.
Those rules can limit where you keep or charge the unit.
We cannot say without your fridge's data. You need its running watts, total starting watts, voltage, plug type and the hours you need. Add your fridge to your full load total.
For these picks, the makers declare 1600 W surge for RIVER 2 Pro, 3600 W for AC200L and 4400 W for Explorer 2000 v2. They do not confirm a fridge start: the cited specs give no surge duration. Ask the maker how long the surge can last, then check your fridge's start demand with the other loads on.
Check the steady load against rated output as well.
Panel connections need matched equipment and licensed electrical work. The transfer guidance we cite covers engine generators, not these battery units. In a rental, you may not control the panel. Ask your landlord and a licensed electrician first.
Never change wiring yourself or bypass building protection devices.
Divide its watt-hour capacity by your steady load in watts. The result is a ceiling, not a promise. Our sources do not list conversion losses for these units. Your real runtime will depend on the load and on the unit.
Plan with extra room for that reason.
