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27 lines
831 B
27 lines
831 B
typedef BatteryVoltageRange = ({int minMv, int maxMv});
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BatteryVoltageRange batteryVoltageRange(String chemistry) {
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switch (chemistry) {
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case 'lifepo4':
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return (minMv: 2600, maxMv: 3650);
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case 'lipo':
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return (minMv: 3000, maxMv: 4200);
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case 'nmc':
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default:
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return (minMv: 3000, maxMv: 4200);
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}
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}
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int estimateBatteryPercentFromMillivolts(int millivolts, String chemistry) {
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final range = batteryVoltageRange(chemistry);
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if (millivolts <= range.minMv) return 0;
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if (millivolts >= range.maxMv) return 100;
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return (((millivolts - range.minMv) * 100) / (range.maxMv - range.minMv))
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.round();
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}
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int estimateBatteryPercentFromVolts(double volts, String chemistry) {
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final millivolts = (volts * 1000).round();
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return estimateBatteryPercentFromMillivolts(millivolts, chemistry);
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}
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