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 2048Wh, 2400W LiFePO4 Battery

Product ID: 531164343

Details

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

⚡2048Wh LiFePO4 battery capacity

🔇30dB whisper-quiet operation

☀️1000W solar input for ultra-fast charging

€ 2635.69

Duties & taxes included

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Power your life, fast and fearless — never miss a beat!

EXPANDABLE UP TO 6 K WH - Scale your power effortlessly by adding up to two extra batteries—customize your energy fortress.
POWER 99 OF HOUSEHOLD DEVICES - With 2400W continuous and 3400W X-Boost output, run everything from fridges to power tools seamlessly.
CHARGE TO 80 IN JUST 43 MINUTES - Unrivaled rapid charging with combined solar + AC input—stay powered without the wait.
ULTRA QUIET SMART ENERGY MANAGEMENT - Operate silently at 30dB and control your power usage remotely via the intuitive EcoFlow app.
10 YEAR BATTERY LIFESPAN WITH 3000 CYCLES - Industry-leading LFP chemistry ensures a decade of reliable, cost-efficient energy storage.

The EF ECOFLOW DELTA 2 Max is a cutting-edge portable power station featuring a robust 2048Wh LiFePO4 battery with a 10-year lifespan and 3000 charge cycles. It supports ultra-fast charging—80% in just 43 minutes—via combined 1000W solar and AC input. Expandable up to 6kWh, it powers nearly all household devices with 2400W continuous output and 3400W peak via X-Boost. Whisper-quiet at 30dB and equipped with advanced safety and smart app controls, it’s the ultimate energy solution for home backup, outdoor adventures, and emergency readiness.

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	#2,753 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #16 in Outdoor Generators
Brand	EF ECOFLOW
Brand Name	EF ECOFLOW
Color	Black&Grey
Customer Reviews	4.6 out of 5 stars 1,347 Reviews
Engine Displacement	79 cubic centimeters
Engine Power Maximum	2400 watts
Engine Type	4 Stroke
Frequency	60 hertz
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 Highlight	2400W LFP Solar Generator, Full Charge in 1 Hr, Solar Powered Generator for Home Backup Camping RV, Solar Panel Optional
Item Type Name	DELTA2 Max
Item Weight	23 kg
Manufacturer	EF ECOFLOW
Manufacturer Part Number	EFD350
Material Type	ABS
Model Name	DELTA2 Max
Model Number	EFD350
Number of Items	1
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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