The voltage of battery does not change after charging for 1 hour, my multimeter always says the voltage of battery is 3.90V, is there any way to detect if the battery charging circuit is working?
And I noticed that the voltage of my 'VBUS' is 5.16V, which is a little bit higher than the protection circuit on the battery(they specified 4.2V-5V), could this be the problem of preventing the battery from charging?
The voltage of battery does not change after charging for 1 hour, my multimeter always says the voltage of battery is 3.90V, is there any way to detect if the battery charging circuit is working? And I noticed that the voltage of my 'VBUS' is 5.16V, which is a little bit higher than the protection circuit on the battery(they specified 4.2V-5V), could this be the problem of preventing the battery from charging?