Hi jandls, the design initative of our system using TI BQ27441-G1 is for monitoring Li-ion or Li-polymer rechargeable batteries since from our considered use case, they are all using rechargable batteries. At this moment, we do not have non-rechargable batteries data.
For I2C communication, please refer to standard Micropython I2C codes to assess BQ27441 by default address 0x55 (7-bit address). And thanks for your post, we are considering to add sample codes for the fuel guage application. Thanks very much for your valuable opinion and questions.
For sensing battery voltage, we suggest first consider using BQ27441 first.
While using the “BATMON” pin is considered as system monitoring method to live monitor the system power rail usage. If this part of circuit is used, our suggested component values are adding 100kOhm 1% for R304 and R307, and 0Ohm 1% for R306 and making use of GPIO12 as ADC input.
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wilsonto
@wilsonto
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Coulomb counting for primary battery? -
Schematic of Starter Kit board and details of QWIIC and 1mm pitch battery connectorsHi jandls, thanks a lot for your comments. We are in process of pushing an update to the hardware section of the online documentation, which should be available in the next few days. In the meantime, please find the F1 Starter Kit schematic at the link below to help speed up your design. Please let us know if you have any questions or need further assistance.