Yoiimiya High Dynamo Charger Portable Emergency Hand Crank USB Charging Generator

Awful product

Very good and easy to use

Conecter was not so good so I made it better and the capacitor was not great so I added my on thank 😃👍

Must be set to 5v for the usb, this outputs all voltages, 3v is to low voltage for usb.A steady turn, easy for a few seconds, then the amps & resistance. For my old devices 7 - 800ma, which after 10 - 15 minutes is enough fitness wise, i'm old.With a 12v car socket & usb adaptor more amps are available, easier to turn but needs to be faster.A power bank or supercaps could be best use of this.Each day use this more, it make life easier for the main batteries, which is needed when raining all day & solar not doing much.If you have flooding or power cuts in winter then this could be a usefull item.Amps, have a limit of more resistance at 5v and speed at 15v which makes it short stints.YT vids are available on, Hand Crank Generators.

Very slow charging

Very poor. Not fit for purpose

No English instructions