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Is it safe to connect a small 5W 5V solar panel directly into a portable power bank?

Can I connect a 5w 5w solar panel directly into a 10k mAh portable battery bank safely via USB 2.0, or does it need some sort of protection in-between like a solar charge controller or a schottky diode?

Example of battery bank (except one with usb 2.0 input): https://www.anker.com/ca/products/a1229

Example of solar panel: https://www.aliexpress.com/item/1005006012344670.html

5W 5V Solar Panel

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