Hi All
I am looking to implement a method for charging 3 nickel metal hydride batteries from USB. The charging power will be triggered from an FT232RL chip once the usb connection is enumerated.
So focusing on USB 2 with a maximum charge current of 500mA. Battery pack includes 3 cells in series with a nominal voltage of 3.6V and maximum charge voltage of about 4.6V ish. Previously to charge NMH I have used a constant current source and monitored the battery voltage for the voltage drop.
Should I use the USB 5V through a 10R resistor to the battery? Or any other recommended methods?
Alyeomans
I am looking to implement a method for charging 3 nickel metal hydride batteries from USB. The charging power will be triggered from an FT232RL chip once the usb connection is enumerated.
So focusing on USB 2 with a maximum charge current of 500mA. Battery pack includes 3 cells in series with a nominal voltage of 3.6V and maximum charge voltage of about 4.6V ish. Previously to charge NMH I have used a constant current source and monitored the battery voltage for the voltage drop.
Should I use the USB 5V through a 10R resistor to the battery? Or any other recommended methods?
Alyeomans