Is the purpose of the BQ40Z50 to be included within the battery pack, and not part of my product? After playing around with the BQ40Z50EVM I am starting to think this is the case...?
I am designing a product that is powered by 2 18650 batteries in series. I would like to be able to charge these batteries from within the device, or if the user wishes, they can remove the 2 18650 batteries and charge using an external charger.
I could use something like the bq24004, but this doesn't support cell balancing, gas guage, etc.. Is cell balancing required when charging two 18650 batteries in series? I asked the question on eevblog (link below) and got mixed results...
Does TI offer a solution for this? I assume the BQ40Z50 would not work, as it seems to require a lot of calibration, and needs to learn by monitoring cell charge / discharge?
