Hi everyone! I Have one question before I try one thing that maybe just have a result: :grin:
I get 2 portable battery charger with Flashlight:
I open up and... Surprise: (It have a 1W Led but it's not working anymore... so I Improvised one Haha)
18650 Battery of 4.2V (I have not measured the Usb Output but is 4.2v directly)
I Want to know it I can make it a Serial Battery to have 8.4v (Yep, Paint for Quick things Haha)
Aaaaaand the really "Want to know thing"... I Can still use the Usb Output/input for charge the batteries? I gonna use the Power directly with a switch before the usb output but I want to use the Micro Usb input for Charging the batteries... (Yep, Another Paint for Quick things Haha)
There are photos of the Usb Output/input: My Idea can be use?