MP2615 can't charge the 2 li-ion 18650 battery

Battery Management
1

Hi, I have a question about my latest circuit. I tried to use the MP2615 to charge 2 18650 batteries with the S-82A2AA-A8T2U primary protection chip to prevent overcharging and overdischarging.

MP2615+S-82A2AA primary protection chip
MP2615+S-82A2AA primary protection chip1240×381 72.5 KB

Right now, I have a problem with the connection 2 battery for the first power on time; it can’t charge the battery, and the VBAT-=-4.7V and VM-=-0.6V, the S-82A2AA-A8T2U chip OD mosfet discharging controller is low, which can’t make the VBAT-connect to GND to initialize the work.

I looked at the S-82A2AA chip, and it said, “Caution: After the battery is connected, discharging may not be carried out. In this case, this IC returns to the
normal status by connecting a charger,” but I connected the charger and am still not able to work.

So, can you help me figure out what the error is?

2

The MP2615 does have inherent protection against over charging, or depleted battery. Was there a specific requirement for using the battery protector?

Confirm how the FET drivers operate on S-8282 device.

Best,
Nouman