44 lines
1.2 KiB
Bash
44 lines
1.2 KiB
Bash
#!/usr/bin/env bash
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# Battery Calibration Script for Arch Linux on MacBook Air
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# Helps safely discharge/charge battery to recalibrate SMC.
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LOGFILE="$HOME/battery_calibration.log"
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THRESHOLD_SHUTDOWN=2 # % at which system will auto-shutdown
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THRESHOLD_WARN1=10
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THRESHOLD_WARN2=5
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get_capacity() {
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cat /sys/class/power_supply/BAT0/capacity
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}
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get_status() {
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cat /sys/class/power_supply/BAT0/status
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}
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log() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*" | tee -a "$LOGFILE"
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}
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log "=== Starting battery calibration session ==="
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while true; do
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CAPACITY=$(get_capacity)
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STATUS=$(get_status)
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log "Battery: $CAPACITY% | Status: $STATUS"
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if [[ "$STATUS" == "Discharging" ]]; then
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if (( CAPACITY <= THRESHOLD_WARN1 && CAPACITY > THRESHOLD_WARN2 )); then
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notify-send "Battery Calibration" "Battery low: $CAPACITY%. Save work."
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elif (( CAPACITY <= THRESHOLD_WARN2 && CAPACITY > THRESHOLD_SHUTDOWN )); then
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notify-send "Battery Calibration" "Battery critical: $CAPACITY%. Shutdown soon."
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elif (( CAPACITY <= THRESHOLD_SHUTDOWN )); then
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log "Battery reached $CAPACITY%. Shutting down for full discharge..."
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systemctl poweroff
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fi
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fi
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sleep 60 # check every minute
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done
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