Originally Posted by PenguinIsrael
Thanks, got it better now.
Can you just explain this part better?
If the battery reduce it to 4V by itself, shouldnt it be safe?
, when you connect the batterie with the 5Volt-USB cable,
then batterie Volts increase from 3,6Volt up to 4Volt,
when charging is not stopped with 4Volt, its getting overcharged.
Should charge very slow, with a 1/10 from the capacity of the batterie.
So , with a 1500mAh batterie you should load with 150mA for 10 houres,
so its more save, becorse slow, but have to be controlled too, maximum 4,1 Volt.
This is controlled by Android regulary.
You can put the USB-cable in the batterie connector-slots and both together in the Defy.
So the batterie stay connected to the 5Volts and
will be charged from USB, even in the defy, bypassing the charge-controller.
So you can try to boot.
For a short time you can do so.
Later the batterie get higher and higher without charge-control, so will overcharge, DANGER !!!