How to set BQ33100 design capacitance?

Hi David,

I beleive this is a redudant parameter as it is just used for informative purposes to let the user know what the design capacity of the pack is. As the top ten considerations recommended, set the init capacitance and the capacitance to the value of the design capacitance.

thanks

Onyx

Hi Onyx,

I did an experiment by setting this register with 10.0F, and initial 1st capacitance and measured capacitance are 8.2F/8.6F respsctivaly. The health reported by this chip is 86%. It seems the health is calculated using this parameter, instead of initial 1st capacitance, which is different from the datasheet says.

Thanks.

ok, then it means it is probably used to calculate the state of health then. since the data sheet says to set it to the init ialcapacity, then i suggest you do so. I could check with the firware enginee to verify the function of the design capacity in the code.

thanks

Onyx

ok, I just verified it uses design capacitance for state of health calculations.

thanks

Onyx