Charge two batteries in parallel with bq24038

Oscar Gomez Fuente

Expert 2066 points

Other Parts Discussed in Thread: BQ24038

Hi, Can I charge two batteries (same model) in parallel with the IC BQ24038?

Thank you so much.

over 13 years ago

0 Tahar Allag over 13 years ago

TI__Mastermind 30980 points

did you see this post ?

http://e2e.ti.com/support/power_management/battery_management/f/179/p/103866/365348.aspx#365348

Thanks

-Tahar

0 Oscar Gomez Fuente over 13 years ago in reply to Tahar Allag

Expert 2066 points

Ok, thank you so much.

0 Charles Mauney over 13 years ago in reply to Oscar Gomez Fuente

TI__Mastermind 31120 points

Typically it is not an issue to charge similar Li-Ion cells in parallel, since they both get full at 4.2V, the current tapers to zero and they do not get hot.

Sensing the temperature for both cells may be a challenge.

For Nickel cells, one should use cells from the same lot and capacity. One would not want one cell to get full and dissipate energy sooner that the other.

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Charge two batteries in parallel with bq24038