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Implement battery data reliability checks #6727

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Implement battery data reliability checks #6727

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c81a4c8
Implement battery data reliability checks
Gao-Lezhe Dec 3, 2025
34b2e1b
Implement battery data reliability checks
Gao-Lezhe Dec 3, 2025
27d4ccc
Improve battery level validation logic
Gao-Lezhe Dec 13, 2025
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45 changes: 43 additions & 2 deletions client/cs_prefs.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -267,6 +267,44 @@ int CLIENT_STATE::check_suspend_processing() {
// (which is where we get battery info)

if (device_status_time) {

static double last_reliable_battery_level = -1.0;
const double BATTERY_DROP_THRESHOLD = 5.0;
const double STALE_DATA_THRESHOLD = 300.0;

bool use_current_data_for_battery_check = true;
double battery_level_to_check = device_status.battery_charge_pct;

//Data Reliablity Check
if ( (now - device_status_time) > STALE_DATA_THRESHOLD ) {
if (log_flags.task) {
msg_printf(NULL, MSG_INFO,
"[Android] Battery data stale (%.0fs old). Skipping check.",
now - device_status_time
);
}
use_current_data_for_battery_check = false;
}

//Preventing Sudden Battery Drop by False Data
else if ( device_status.battery_charge_pct == 0.0 && last_reliable_battery_level >= BATTERY_DROP_THRESHOLD ) {
if (log_flags.task) {
msg_printf(NULL, MSG_INFO,
"[Android] Ignoring battery drop (%.1f%% -> 0%%). Using last reliable level (%.1f%%).",
last_reliable_battery_level, last_reliable_battery_level
);
}
battery_level_to_check = last_reliable_battery_level;
}

else if ( device_status.battery_charge_pct > 0.0 ) {
last_reliable_battery_level = device_status.battery_charge_pct;
}

if ( !use_current_data_for_battery_check ) {
goto skip_battery_check; // Skip all checks only for stale data
}

// exit if we haven't heard from the GUI in 30 sec
// (we rely on it for battery info)
//
Expand Down Expand Up @@ -297,8 +335,8 @@ int CLIENT_STATE::check_suspend_processing() {

// check for sufficient battery charge.
// If suspend, don't resume for at least 5 min
//
int cp = device_status.battery_charge_pct;

int cp = (int)battery_level_to_check; // Use validated battery level
if ((cp >= 0) && (cp < global_prefs.battery_charge_min_pct)) {
battery_charge_resume_time = now + ANDROID_BATTERY_BACKOFF;
return SUSPEND_REASON_BATTERY_CHARGING;
Expand All @@ -307,6 +345,9 @@ int CLIENT_STATE::check_suspend_processing() {
return SUSPEND_REASON_BATTERY_CHARGE_WAIT;
}
}
skip_battery_check:
; // Empty statement for the label

#endif

// CPU is not suspended. See if GPUs are
Expand Down