Customizable Overnight Charging Scheduler
Keep your battery healthy at night, fully charged in the morning.
Unique Charging Capability
Chargie's "Top Up Scheduler" has the unique ability to keep your phone at a safe state of charge during the night (50 to 70% is best) and only top it up to a value of your choice in the morning, just before you wake up.
Protect Battery Health
Avoid prolonged high states of charge that degrade battery capacity over time
Safe Overnight Charging
Keep your phone at 50-70% overnight, reducing fire risk and battery stress
Full Capacity When Needed
Wake up to a fully charged phone without the overnight battery damage
Customizable Timing
Set your own wake-up time and desired charge level for maximum flexibility
Better than stock solutions: This is much better than current stock solutions implemented by some manufacturers. You get the best of both worldsβbattery protection at night and full capacity during the day.
The scheduler works by maintaining your phone at a safe, low charge level overnight (typically 50-70%), then automatically topping it up to your desired level (80%, 90%, 100%) just before your scheduled wake-up time. This approach dramatically extends battery lifespan while ensuring your device is ready for the day ahead.
Time at high charge is the cost of overnight charging
Calendar ageing depends on how many hours a cell spends at high state of charge, not just on how many cycles it completes. The scheduler cuts those hours to almost nothing.
A typical night without a scheduler
Plugged in at 23:00, a phone reaches 100% by about 00:30 and then sits at full voltage for six to seven hours until the alarm. Over a year that is well over 2,000 hours at the most damaging state of charge, and that is the calendar-ageing component that even a "battery-friendly" fast charger cannot avoid.
What the scheduler does instead
Chargie charges to a holding level you choose, typically 50β70%, and stops. The phone rests there most of the night. At the time you set, it tops up to the wake-up level, for example 90%, arriving a few minutes before the alarm. The cell spends under an hour at high charge instead of seven.
Why the holding level matters
Storage tests show capacity loss after a year at 25 Β°C of roughly 4% for a cell kept at 40% charge versus about 20% for one kept at 100%. The scheduler applies that storage logic to the eight hours a day your phone is not in use.
Show data table
| Charging method | Hours per night above 80% |
|---|---|
| Plain charger | 6.5 h |
| Chargie limit 80% | 0 h |
| Chargie scheduler | 0.6 h |
Source: Chargie measurements on a 4,500 mAh phone with an 18 W charger; scheduler set to hold 60% and top up to 90% by 06:50
Show data table
| State of charge held | Capacity lost after 1 year at 25 Β°C | Capacity lost after 1 year at 40 Β°C |
|---|---|---|
| 40% | 4% | 15% |
| 100% | 20% | 35% |
Source: Battery University BU-808, storage-loss table (25 Β°C and 40 Β°C rows)