If you set this out at dark, will it auto start when the sun comes up, or does it have to be closed and opened again like my older Big Blue model 28w?

Hi, dear customer YES, this 20w solar charger can auto start when the sun comes up Best regards BigBlue-US

Is this compatible with Anker 521 Power Station?

Dear customer, Yes, the input of this solar panel is 24V/6.26A MAX. It is compatible with Anker 521 Power Station Best regards BigBlue-US

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BigBlue Solar Charger, 20W Fast Charging USB-C External Battery Pack, Portable Charger with 4 Built-in Cables, Solar Phone Charger with Flashlight for Camping Outdoor Trip

BigBlue Solar Charger, 20W Fast Charging USB-C External Battery Pack, Portable Charger with 4 Built-in Cables, Solar Phone Charger with Flashlight for Camping Outdoor Trip

Product ID: 542463011

Details

Brand
BigBlue
Efficiency
High
Included Components
SolarPowa 20
Item Weight
1.7 pounds
Material
Etfe

💧IP65 waterproof & dust resistant

🔋20W max power output

☀️24% solar efficiency with monocrystalline cells

Description

☀️ Charge smarter, adventure harder — never miss a moment off-grid!

POWER UP ANYWHERE - Dual USB-A & USB-C ports deliver up to 4A total for fast, versatile charging on the go.
COMPACT LIGHTWEIGHT - Folded size fits easily in your backpack at just 1.7 lbs—perfect for camping, hiking, and travel.
MAXIMIZE YOUR SUNLIGHT - Kickstand design boosts sunlight absorption by 25%, so your devices charge faster outdoors.
WEATHERPROOF CONFIDENCE - IP65 rating means reliable performance rain or shine, keeping you powered through unexpected weather.
BUILT TO BRAVE THE ELEMENTS - ETFE laminated solar panels offer double the lifespan and superior UV, corrosion, and fire resistance.

The BigBlue 20W Portable Solar Panel combines cutting-edge ETFE lamination and monocrystalline cells to deliver up to 20 watts of high-efficiency solar power. Featuring dual USB-A and USB-C outputs (5V/2.4A each), a durable kickstand for optimal sun exposure, and an IP65 waterproof rating, this lightweight charger is engineered for reliable, fast charging of phones, tablets, and power banks during outdoor adventures.

Specifications

ASIN	B0BYDPC92H
Best Sellers Rank	#202,254 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #144 in Cell Phone Solar Chargers
Brand Name	BigBlue
Connector Type	USB Type A
Customer Reviews	4.4 4.4 out of 5 stars (59)
Efficiency	High Efficiency
Included Components	SolarPowa 20 solar charger, user manual, USB-C to USB-C cable
Item Weight	1.7 pounds
Manufacturer	BigBlue
Manufacturer Part Number	SolarPowa 20
Material Type	Etfe
Maximum Power	20 watts
Model Number	SolarPowa 20
Output Voltage	5 volts
Special Features	Portable,Waterproof
Unit Count	1 Count

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