check_charging_duration(9)

💖 check_charging_duration(9) 💖

okay so real talk, bestie — this is a page from the Kernel API Manual, and it's about check_charging_duration, which literally monitors your charging/discharging duration. it's giving battery bodyguard energy tbh 🫶

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✨ NAME ✨

check_charging_duration — monitor charging/discharging duration 🔋

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🌸 SYNOPSIS 🌸

int check_charging_duration (struct charger_manager *cm );

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🎀 ARGUMENTS 🎀

• cm — the Charger Manager representing the battery. that's the main character right there 👑

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🦋 DESCRIPTION 🦋

okay so here's the vibe 💅 — if the whole charging duration exceed 'charging_max_duration_ms', cm stop charging to prevent overcharge/overheat. like, it's cutting you off for your own good, no cap 🔥

and if the discharging duration exceed 'discharging _max_duration_ms', charger cable is attached, after full-batt, cm start charging to maintain fully charged state for battery. so it's out here topping you back up to full so you stay iconic ✨

ngl both of these are straight-up safety-and-maintenance behaviour — one shuts things down before they get too hot, the other keeps the battery chillin' at fully charged. periodt 💀

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🌈 SEE ALSO 🌈

kernel file ./drivers/power/supply/charger-manager.c, plus the whole friend group:

• is_batt_present(9)
• is_ext_pwr_online(9)
• get_batt_uV(9)
• is_charging(9)
• is_full_charged(9)
• is_polling_required(9)
• try_charger_enable(9)
• cm_get_target_status(9)
• _cm_monitor(9)
• cm_monitor(9)
• _setup_polling(9)
• cm_monitor_poller(9)
• cm_setup_timer(9)
• charger_extcon_work(9)
• charger_extcon_notifier(9)
• charger_extcon_init(9)
• charger_manager_register_extcon(9)
• charger_manager_prepare_sysfs(9)

go read them all, iykyk 📚✨

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aaaand that's the whole page, bestie 🎀 mwah 💋 — this one lives at ./drivers/power/supply, dated October 2026, and it's filed under check_charging_duration(9). slay 🌟