How long using only the sun does this take to fully charge?

The capacity of the power bank is 20000mAh. The Max Solar Charging Current is 300mA (from product description here). So, under ideal condition, it takes at least (20000mAh/3000mA = 66.7hrs) 66.7hrs. If you have 8hrs full sun per day, it will take (66.7hrs/8hrs = 8.3days) more than 8 days. It matches the answer (10 days) by Hien on June 3, 2019.

Can this charge through both solar and usb at the same time?

The only problem here, is the max charge current, is 250 or so MA (milliamps = 0.001 ampere) it's going to take a very very very very long time for the battery to charge to a usable point, but it might be useful in recharging the battery ad you use it outside or under direct light, that offers some uv radiation.. also, people 5hink alot of hot sun is what you need for solar, but modules overheat like anything else and when they do, that small little number(250 MA or so) well that's 5he max efficiency and that'll plummet to 0 if they get too hot.. proly don't wanna leave it in direct sunlight for 3 weeks.. especially if it's hot out. A window maybe inside with the air conditioning, on your dash while driving. Or even outside if it's a cool sunny day. It should work best in those conditions. X) hope that helps

does Qi charge through phone cases?

I usually get pretty hefty cases, and 90% of wireless charging stands I tried would not charge my phone unless I took the case off. I can't imagine this unit being much stronger if at all than plug in charging stands

Does this have pass-through (charge and being charged simultaneously)?

Do not believe so. The wireless charging pad is opposite side of solar panels. You also have to turn it to charger phone mode (constant on light) OR charging mode (blinking lights). As my only and first solar charger I still feel it does its job and does it well.

ASIN	B07Q5ZQ6GL
Amperage	3 Amps
Antenna Location	Smartphones, Tablet, iPad, iPhone
Battery Capacity	20000 Milliampere Hour (mAh)
Battery Cell Type	Lithium Polymer
Battery Charge Time	12 Hours
Box Contents	1* Carabiner, 1* Solar Power Bank, 1* USB A to USb C Cable, 1* User Manual
Brand	BLAVOR
Brand Name	BLAVOR
Colour	Orange
Compatible Devices	Smartphone
Compatible Phone Models	iPhone 14/14Pro/13/13Pro/13Pro Max, iPhone 12/12Pro/12Pro Max etc
Connector Type	USB Type C
Customer Reviews	4.4 out of 5 stars 3,427 Reviews
Is Product Cordless	Yes
Item Dimensions	17.5 x 8.4 x 2.8 Centimeters
Item Dimensions L x W x Thickness	17.5L x 8.4W x 2.8Th Centimeters
Item Weight Unit of Measure	1.04 Pounds
Manufacturer	hp
Model Name	PN-W12-Orange
Model Number	PN-W12
Number of Batteries	1 Lithium Polymer batteries required. (included)
Number of Ports	4
Other Special Features of the Product	Flashlight
Output Current	3 Amps
Portable	Yes
Power Source	Battery Powered
Special Feature	Flashlight
Voltage	5 Volts
Warranty Type	No Warranty

BLAVOR Solar Charger Power Bank 18W, QC 3.0 Portable Wireless Charger 10W/7.5W/5W with 4 Outputs & Dual Inputs, 20000mAh External Battery Pack IPX5 Waterproof with Flashlight & Compass (Orange)

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