is the AC output on the Delta 2 Ma pure sine wave or modified sine wave? If you don't know the answer, please do not reply. Thank you.

As far as I know yes, it is pure sine wave.

Can it be connected to a car cigarette light? And if so how long do you think it'll take to reach full charge?

I have a Tesla model y Long range and I have mine connected to the rear 12 volt “cigarette” jack. On my vehicle it puts 111 watts of power into the ecoflow so the answer to how long, depends on how much do you need. If you used up 1000 watts hours or about 1/2 it would take about 10 hours to refill it. The amount of energy will vary for each type of vehicle but the eco flow will tell you how much and how long to charge in those particular conditions.

When using extra battery with power station can you continue charging the extra battery when power station reaches 100%

Yes but mine stay close to the same percentage and seem to hit 100 percent around the same time.

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EF ECOFLOW Portable Power Station DELTA 2 Max, 2400W LFP Solar Generator, Full Charge in 1 Hr, 2048Wh Solar Powered Generator for Home Backup(Solar Panel Optional)

EF ECOFLOW Portable Power Station DELTA 2 Max, 2400W LFP Solar Generator, Full Charge in 1 Hr, 2048Wh Solar Powered Generator for Home Backup(Solar Panel Optional)

Product ID: 531164343

Details

Brand
EF ECOFLOW
Fuel Type
electric
Included Components
AC Charging *1
Item Weight
23 Kilograms
Output Wattage
3400 Watts
Power Source
Solar Powered

⚡2400W peak power output

🔋3000 battery cycles lifespan

☀️1000W solar input max

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Description

🔌 Power your life, fast and fearless.

DECADE LONG DURABILITY - LFP battery technology delivers 3000 cycles, 6× industry average, backed by a 5-year warranty.
POWER YOUR ENTIRE HOME - 15 versatile outlets and X-Boost mode let you run up to 3400W, covering 99% of household devices.
LIGHTNING FAST RECHARGE - Get 80% power in just 43 minutes with combined solar + AC charging—never wait to power up.
WHISPER QUIET OPERATION - Ultra-quiet 30 dB charging means no noise pollution—perfect for overnight use and peaceful living.
SCALABLE ENERGY ON DEMAND - Expand capacity from 2kWh to 6kWh with plug-and-play extra batteries—customize your power fortress.

The EF ECOFLOW DELTA 2 Max is a cutting-edge 2400W portable power station featuring rapid 80% recharge in 43 minutes via combined solar and AC input. Its robust LFP battery offers an industry-leading 3000 cycles lifespan with a 10-year durability promise. Expandable up to 6kWh, it powers nearly all household devices quietly at 30 dB, making it the ultimate home backup solution for millennials who demand reliability, speed, and eco-friendly energy.

Specifications

ASIN	B0C4DW17PD
Additional Features	10-Year Long-Lasting LFP battery, 2400W LFP Solar Generator, As Quiet as 30 dB, Expandable Capacity. Up to 6kWh, No fumes. No noise. No maintenance.
Best Sellers Rank	#2,528 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #10 in Outdoor Generators
Brand Name	EF ECOFLOW
Color	Black&Grey
Customer Reviews	4.6 4.6 out of 5 stars (1,275)
Engine Displacement	79 Cubic Centimeters
Engine Power Maximum	2400 Watts
Engine Type	4 Stroke
Frequency	60 Hz
Fuel Type	electric
Ignition System Type	electric
Included Components	AC Charging Cable 1, EcoFlow DELTA 2 Max Portable Power Station1
Item Dimensions L x W x H	12.2"L x 9.7"W x 20"H
Item Type Name	DELTA2 Max
Item Weight	23 Kilograms
Manufacturer	EF ECOFLOW
Manufacturer Part Number	EFD350
Material Type	ABS
Model Name	DELTA2 Max
Model Number	EFD350
Output Wattage	3400 Watts
Power Source	Solar Powered
Recommended Uses For Product	Home Backup
Running Wattage	2400 Watts
Runtime	43 minutes
Starting Wattage	4800 Watts
Total Power Outlets	6
UPC	842783128706
Voltage	120 Volts
Warranty Description	5 Year
Wattage	2048 Watt-hours

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$U109595

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In stock

Sold byAmazon UruguayDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Desertcart purchases this item on your behalf and handles shipping, customs, and support to Uruguay.

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