BQ25616: Power management forum

G pandi

Part Number: BQ25616

I our design we use BQ25616JRTWR battery management IC. In this battery management IC use for single battery alone they are mentioned in datasheet .In our case we are using three battery connected in parallel. It works are not . we are using 3.7v and 2.5A battery .

over 4 years ago

0 Jeff F over 4 years ago

TI__Guru**** 165786 points

Hi G pandi,

Yes, the charger can charge LiIon batteries in parallel. Batteries in parallel self balance. Max charge is 3A. If you have 3, 2.5A batteries in parallel that is 7.5A so you will need > 7.5A/3A = 2.5 hours for charge, assuming your input supply has enough power for the charger to charge at 3A.

Regards,

Jeff

0 G pandi over 4 years ago in reply to Jeff F

Intellectual 390 points

hi Jeff,

Thank for reply Jeff. My issue is resolved .

Regards

pandi

0 G pandi over 4 years ago in reply to G pandi

Intellectual 390 points

Hi Jeff,

we are using three ideal battery connected in parallel each battery having 3.8v and 2.5A.Our doubt is each cell required independent BMS unit required are not .

Regards

pandi

0 Jeff F over 4 years ago in reply to G pandi

TI__Guru**** 165786 points

Hi Pandi,

Most customers use only one charger for parallel batteries. The only issue is whether the charge current is high enough for to charge in the safety timer window, as I mentioned previously.

Regards,

Jeff

0 G pandi over 4 years ago in reply to Jeff F

Intellectual 390 points

Hi Jeff,

Thank for your support Jeff .My issue is resolved..

Regards

pandi