Page - 60/81 AFCZP0BC- COMBIACX & ACEX - User Manual
The Battery Charge detection follows this algorithm:
1) Battery voltages is read when the Battery current is zero, that is when the output
power stage is not driven.
2) Vbatt is the mean of the least samples measured by the microcontroller
converter (the samples are took on key input).
3) Vbatt is compared with a threshold value (function of the actual charge
percentage) in a table and with comparison is found a new charge percentage.
4) Thresholds value can be changed with parameters Bat. Max. Adj. and Bat. Min.
Adj.
5) After key on battery charge can be only increased if the battery charge
computed after key on is greater than the last value stored in Eeprom the
battery charge value is updated otherwise the Battery charge is not updated.
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