BQ24650: schematic review of charge circuit and gauge circuit

My schematic review is as follows:

1. The MPPSET voltage is 7.32 V.

2. The charge current is 3.33 A.

3. The charge voltage is 4.2 V.

4. What is the purpose of R158 and R159? The STATx pins are meant to be pulled up when the pins are off and pulled down when the pins are on.

5. We require a 0.1 uF capacitor from SRP to GND with an optional 0.1 uF capacitor from SRN to GND.

Please open a separate thread to review the gauge product.

Thanks,

Mike Emanuel

Please click "Resolved" if this answers your question.

As long as your microcontroller can detect the logic low and high of the STATx pins its okay.

You need to be careful about the balancing of the cells. The battery charger will not guarantee all cells have the same charge level at the same time or that the same current goes into each one. This will depend on the total impedance to each battery pack.

Thanks,

Mike Emanuel

Please click "Resolved" if this answers your question.