We use the following schematic diagram to recharge the battery,Lithium battery parameters:3.7V2900mAh.
Question: what happens when there have charging current, but the LED1 is not bright.
CH1:VBAT-GND, CH2:(VCC-VSNS)*30(Using differential amplifier amplification about 30 times)。
I think there is a contact resistance between the charger and battery, lead to the battery has been charging - stop charging-charging - stop charging-charging - stop charging。。。。
The following test waveform in the time period have any information?Such as 3.8us,38us.
In my use VCC has been change, there will be a bad influence?（Because the R10 voltage change with charging current）。
V+&V- =4.7V（Max current >2.5A）
