Hello i have a question regarding best practices using the accumulated capacity gauge mode.
My goal is to get the remaining capacity of a battery. The idea was to set the gauge into ACC mode and read the used capacity every half hour. however its important to shutdown the gauge inbetween the measurement to save battery power. My assumption was that the gauge will keep measuring even if GE pin is low. Only having to activate the GE pin to update the measurements. After a few tests i think i can conclude that this is not the case. turning off the GE pin also turns off the measurement of used capacity. Is that true?
I choose the bq35100 because of the following line in this document:
on page 5 in the table "6.3 Recommended Operating Conditions" it states that "ICC_ACC_AVE | Gas gauge in ACCUMULATOR mode average current" would only be 0.3 uA. Which is great. considering that the operation condition is: "Update every 30 minutes otherwise GE = Low".
From this i concluded that i can run the bq35100 every 30 min and get my correct measurement. However it appears that the board is blind during GE = Low. This would under report the used capacity by a lot. Does that mean that i would have to guess the used capacity during these 30 min?
Also note that i am using a " Saft LS-14500-BA AA 2600mAh 3.6V Lithium Thionyl Chloride " which makes the use of SOH mode useless too, due to sudden voltage drop at the end of the battery capacity.
I don't really want to set GE = HIGH during the whole lifetime of the battery as this would drain my battery way too fast. Also guessing the used capacity inbetween the 30 min seems too unprecise.
What would be the best practice to gap the lost 30 min? Am i using the gauge wrong?
