Can these solar panels be run in series? If so, what is the maximum number of panels I can connect in series?

The maximum number depends on your solar charger. It will list a maximum voltage. Look at the specs and see what the open circuit voltage of the panel is. Then look at your battery charger for the max solar input voltage. It can range quite a bit, so it is very important. Divide the maximum voltage for the charger by the open circuit voltage of the panel. The whole number will be the max number of panels. For instance - If the max input for the charger is 150V and the panel will output 52V open circuit, 150/52 = 2.88. The maximum series panels would be 2. 2 x 52 - 104. As long as that number is at least 20V higher than your battery voltage, you should be golden. Also, look at the short circuit amps to make sure you are under the max current for the charger if you hook your panels in parallel. Series panels add voltage. Parallel panels add current.

Can this do a parallel or serial connection with the ecoflow solar panels?

The working voltage of this solar panel is 18V, which is suitable for your power station. The parallel voltage is unchanged, and the MC4 parallel connector is required. The series voltages are added.

What's the average power output? Seeing most people post between 78-100w. My battery can take up to 200w, wondering if I can hook up 2 of these?

I’ve gotten between 102-95 on mine and yes you can connect two. You would need to buy a Y connecter set.

Will this work with an ebl 300 watt?

The working voltage of the solar panel is 18V, if the power station accepts 18V solar charging, it will be adapted.

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ALLPOWERS SP029 140W Portable Solar Panel Charger for Laptop Cellphone, Waterproof IP65 Foldable Solar Panel with 5 Output, for Solar Generator, Power Bank, 12V Car Battery

Product ID: 283392741

Details

Brand
ALLPOWERS
Efficiency
High
Item Weight
4.5 Kilograms
Material
Silicon
Product Dimensions
25"L x 14"W x

⚡140W high power output

💧IP65 waterproof durability

🔋5 versatile charging ports

$306.29

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Description

☀️ Charge smarter, roam freer — power your adventure with ALLPOWERS!

POWER UP ANYWHERE - 140W solar cells deliver up to 22% efficiency for reliable, endless energy on the go.
MULTI DEVICE READY - Five output ports including PD 60W USB-C fast charge your laptop, phone, and 12V batteries simultaneously.
SAFE SMART CHARGING - Integrated short circuit and surge protection safeguard your devices and your peace of mind.
TRAVEL LIGHT CHARGE HEAVY - Foldable design weighs just 9.9 lbs and folds to a compact 22x14.2 inches for ultimate portability.
BUILT TO BRAVE THE ELEMENTS - IP65 waterproof rating with durable nylon construction keeps your power flowing rain or shine.

The ALLPOWERS SP029 is a 140W foldable solar panel charger featuring high-efficiency polycrystalline silicon cells with up to 22% conversion rate. It offers five output ports including dual USB-A, PD 60W USB-C, and 18V DC for versatile device compatibility—from laptops to 12V car batteries. Weighing just 9.9 lbs and folding compactly, it’s designed for portability and durability with an IP65 waterproof rating and built-in safety protections, making it ideal for off-grid power needs.

Specifications

ASIN	B08R1M7NFT
Amperage Capacity	6.2 Amps
Best Sellers Rank	#46,407 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #170 in Solar Panels
Brand Name	ALLPOWERS
Connector Type	Solar connector
Customer Reviews	4.2 4.2 out of 5 stars (455)
Efficiency	High Efficiency
Folded Size	22x14.2x0.2 inch
Included Components	Screw
Item Dimensions L x W x H	25"L x 14"W x 1.6"H
Item Weight	4.5 Kilograms
Manufacturer	ALLPOWERS
Manufacturer Part Number	AP-SP-029-BLA
Material Type	Polycrystalline Silicon
Maximum Power	140 Watts
Maximum Voltage	19.5 Volts
Model Number	SP029
Special Features	Portable
Unit Count	1 Count

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