code 10OFF makes it only $3!
buy from here and enter code at checkout, on the right https://www.renogy.com/renogy-e-f...-usb-port/
10W Renogy E.FLEX10 Portable Solar Panel w/ USB Port (Blue)
$8.00
$60
86% off
+ Free Shippingat Amazon
+ Free Shippingat Amazon
Top Comments
In full sun it charges at over 5 watts in San Francisco CA, but I never got a full 10. But that's to be expected, it's hard to get ideal perfect conditions.
For $12 I don't think you can get a better solar panel. Other comparable ones are $30-50 on Amazon.
Note that if you get cloud temporarily passing over, it may cause the charging to drop and stay very weak. This is due to your device thinking the charger can't provide enough power so the device requests less and never requests more until you unplug and replug.
I may recommend a USB power meter to see how fast it's charging. For a cheap Chinese one: https://www.ebay.com/itm/Current-Voltage-Capacity-Tester-USB-Volt-Power-Bank-Capacity-Doctor-Mete-TO-f-/402851446825?
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I got this a couple years ago with a ~4000mah battery bank for $18
I like it. think it worth the money just for emergency charging.
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"I recommend buying 2 panels and wiring them together like this instead of getting their 10w version because I've seen a lot of those failing."
Regardless, thanks OP and thanks to those who mentioned the Renology site and coupon
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$12 with the FIVEOFF coupon
Will use for some random science/hack projects with my Sun. Er... I mean Son.
See what i did there?
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