
2026 update: check whether you’re buying WAVE (original) vs WAVE 2
EcoFlow’s portable AC line has evolved. If you’re shopping today, confirm whether listings are for the original EcoFlow WAVE (commonly described as ~4,000 BTU) or EcoFlow WAVE 2 (adds heating and higher rated output). Accessories and battery compatibility can differ by generation.
Reality-check on runtime: battery capacity alone doesn’t equal hours of cooling. Runtime depends heavily on compressor duty-cycle, insulation, ambient temperature/humidity, and fan speed. As a back-of-the-napkin estimate, a ~1,000Wh battery powering a ~500W load would last on the order of ~2 hours at continuous full draw; in Eco modes you can stretch longer.
Buying tip: prices and bundles fluctuate a lot. If you’re paying close to the cost of a larger power station, it can be smarter to run the unit from a bigger battery (e.g., DELTA series) for flexibility beyond just the AC.
2026 update: check whether you’re buying WAVE (original) vs WAVE 2
EcoFlow’s portable AC line has evolved. If you’re shopping today, confirm whether listings are for the original EcoFlow WAVE (commonly described as ~4,000 BTU) or EcoFlow WAVE 2 (adds heating and higher rated output). Accessories and battery compatibility can differ by generation.
Reality-check on runtime: battery capacity alone doesn’t equal hours of cooling. Runtime depends heavily on compressor duty-cycle, insulation, ambient temperature/humidity, and fan speed. As a back-of-the-napkin estimate, a ~1,000Wh battery powering a ~500W load would last on the order of ~2 hours at continuous full draw; in Eco modes you can stretch longer.
Buying tip: prices and bundles fluctuate a lot. If you’re paying close to the cost of a larger power station, it can be smarter to run the unit from a bigger battery (e.g., DELTA series) for flexibility beyond just the AC.
EcoFlow Wave is a 4000 BTU portable air conditioner for off grid applications. It comes with an inbuilt solar charging option and an add-on battery of 1008Wh capacity. You can run the Wave with the add-on battery for up to eight hours, of which three hours are in cooling mode.Other than the add-on battery, you can also run Wave on EcoFlow’s Delta Pro and Delta Max using an XT150 cable. This method gives you 28% higher efficiency in the Wave’s operation compared to running it by connecting to the AC socket of any other EcoFlow or third-party power station.EcoFlow Wave Add-On Battery
As you see, it is a 1008Wh battery pack. It has got a detachable design and so you can simply snap on the Wave on it and enjoy the maximum portability of the AC. It is a lightweight battery pack. With a weight of 17.4 lb and a small design, you can comfortably keep it as a backup for your air conditioner.
Below are the runtime details of the Wave on various compatible backup methods that include the add-on battery and other options. See, you can also directly run the portable AC on a wall socket if you are lucky to have access to the grid power or any other off grid power systems with an AC outlet in your camping tent.

EcoFlow Wave Battery FAQ
Q: Is the Wave Carrying a Battery Inside?
A: No, the Wave doesn’t come with a built-in battery, but you can buy it with the 1008Wh add-on battery. The built-in solar charging input can be used to charge the battery directly under the sun with an output of up to 200 watts. Other than the add-on battery, you can use the DC power source from the EcoFlow Delta Or Max to get longer runtime from the AC.Q: How Many Powering Options Do The Wave Have?
A: The primary powering option of the Wave is its add-on battery, but you can buy the AC without the add-on battery, though. It is because you can also run it from other sources like a regular wall socket or the AC socket of any other power station.However, EcoFlow’s Delta Pro and Delta Max’s DC outlets can make it run more efficiently and with longer runtime than its add-on battery. So the Wave has a total of four below powering options.- Regular AC Wall Socket of 100V-240V.
- The Wave 1008W Add-on Battery.
- Delta Max or Its Extra Battery Pack.
- Delta Pro or Its Extra Battery Pack
Q: How to Run Wave from Delta Max and Pro?
A: You can use the Delta Max or Pro extra battery cable to run the Wave. If you don’t already have the cable, you can get a Wave without an add-on battery and the DC cable to run your Wave without spending extra on the battery. Check out our Delta Pro vs Delta Max instant comparison here.Sources
- EcoFlow — WAVE 2 product page (specs) — Referenced for current generation context and published power specs.

Robert DeWitt writes and tests 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.
