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Li-Ion 2s balance and protect charger

Other Parts Discussed in Thread: BQ2970, BQ29209


Hello everyone, I wonder if anyone knows if my method of charging Li-ion batteries is feasible using the following components.

Since the charger is integrated with the rest of the control electronics, along with batteries; and is an isolated system, I need to protect both the charge and discharge the battery 2 cells, for this I plan to use the BQ2970. One for each cell, the first between 7.4V and 3.6V and 3.6V and the next between GND of the battery. Up there the guard should work, since I treat as separate cells.

The following would add a balancer, the BQ29209 model because it is specific to batteries of two cells, but unfortunately only sways between 10 and 30 mA, but it would be admissible if it could be combined with a BQ2057WSN charger.

That is, the idea is to combine charger with balancer and protector, to carry seguirdad and maintain battery life, and to download tienendo an extra prroteccion to protect me from having little tension in the cells and these empiezen to inlcuso losing life or break them.

I would like to know if anyone can confirm that I'm on the right path, or if there is another best option.

Thanks and best regards.