Hello,
I am trying to configure my BQ34Z100-G1 for my specific Lithium Titanite Battery. I am going through your datasheet's instructions for obtaining a ChemID and for using the Impedance Track algorithm to properly configure my fuel gauge monitor, but I am running into a few roadblocks. These roadblocks mainly have to do with the fact that this battery type isnt very common and it has three 2.4V series cells (rather than two 3.6V series cells).
I measured and recorded a charge-relaxation-discharge-relaxation curve for my battery but was not able to achieve a proper ChemID (Standard Deviation was 100%). Mainly because of the 3 series cells. When I change the config.txt to have 2 series cells, I managed to obtain the ChemID of 3353 but this doesn't inspire much confidence as I will need to use that ChemID when I proceed onto the Impedance Track measurements. This is where I would appreciate some guidance. (1) Would it be appropriate to make a new ChemID on TI's database or could I get away with using a 2 cell battery? Alternatively, my team has used the ChemIDs from other 2 cell batteries simply based on their low temperature characteristics.
(2) In addition to this, assuming I use a 2 cell battery's ChemID, I believe I should be able to configure the data memory for a 3 cell battery prior to doing the impedance track testing and still get useful calibration values. Is that correct?
Battery info here:
- HTC1865 3S10P (3 Series, 10 Parallel)
- In the post below, it is stated that it should be possible to use this chipset but this is in regards to a 2 cell battery:
https://e2e.ti.com/support/power-management/f/196/t/959560
Thank you,
Andrew
