How Long to Charge a Samsung Galaxy S24 Ultra Battery?
Charging a Samsung Galaxy S24 Ultra Battery from empty to full takes about 1 h 39 min with its standard 45W charger. The battery holds roughly 52.8 Wh, and this page estimates the time for every common charger wattage, using the Lithium-ion (Li-ion / Li-Po) chemistry it actually uses.
Charge time calculator for Samsung Galaxy S24 Ultra Battery
Estimated charge time
1 h 39 min
Includes the slower li-ion taper phase above 80%.
Charge time by charger wattage
| Charger | Power | Full charge (0-100%) |
|---|---|---|
| Standard charger | 25W | 2 h 59 min |
| Fast charger | 45W | 1 h 39 min |
| SuperFast charger | 65W | 1 h 9 min |
Battery capacity: 52.8 Wh · Chemistry: li-ion
The Samsung Galaxy S24 Ultra's substantial lithium-ion battery is engineered to support demanding daily workflows, from content creation to gaming marathons. Thanks to its impressive capacity and ultra-fast charging architecture, users can expect reliable endurance that adapts to varied usage patterns—whether you're streaming, navigating, or running resource-intensive applications. The device's intelligent power management works in tandem with the battery chemistry to optimize longevity, though real-world battery health does depend on charging habits and environmental conditions like temperature exposure.
To maximize the lifespan of your Galaxy S24 Ultra's lithium-ion battery, adopt a balanced charging rhythm: regular partial charges are gentler than frequent complete drain-and-recharge cycles. Avoid prolonged exposure to heat during charging sessions, and consider using the device in a cool environment when possible. If you plan extended storage, charge the battery to a moderate level rather than leaving it fully depleted or perpetually at full capacity—this preservation approach helps maintain chemical stability in lithium-ion cells over time. The ultra-fast charging capability is convenient for busy moments, but occasional slower charging sessions can contribute to better long-term battery resilience.
With the fastest charger listed here (SuperFast charger, 65W) it takes about 1 h 9 min. With the slowest (Standard charger, 25W) it takes about 2 h 59 min. The Galaxy S24 Ultra houses a 6000 mAh battery with support for ultra-fast 65W charging technology.
Frequently asked questions
- How long does it take to charge a Samsung Galaxy S24 Ultra Battery?
- From 0% to 100% with the standard 45W charger, it takes about 1 h 39 min. Using a faster charger shortens that; using a weaker one extends it, see the table above for exact numbers.
- Is it safe to leave my Galaxy S24 Ultra charging overnight with ultra-fast charging enabled?
- Yes, modern safety architecture in the Galaxy S24 Ultra includes intelligent charging management that throttles power delivery once the battery approaches full capacity, preventing overcharging stress on the lithium-ion cells. However, keeping the device in a well-ventilated, cool area during extended charging sessions is still recommended to minimize heat buildup, which can gradually impact battery chemistry over repeated cycles.
- How does the Galaxy S24 Ultra's battery perform in cold or hot environments?
- Lithium-ion batteries are temperature-sensitive; cold environments may temporarily reduce charging speed and available power, while excessive heat accelerates chemical degradation. The Galaxy S24 Ultra's battery performs optimally in moderate room temperature. During winter travel or summer outdoor use, avoid leaving the device in direct sunlight or unheated vehicles, and give it time to acclimate before charging after exposure to temperature extremes.
- How is this charge time calculated?
- We divide the energy needed (52.8 Wh times the percentage you're charging) by the charger's effective power, which is the charger's wattage times the battery chemistry's real-world charging efficiency (85% for Lithium-ion (Li-ion / Li-Po)). The same formula powers both this page and our API.
ChargeTimeCalculatorestimates are based on typical charger efficiency and battery chemistry, not a live connection to your device. Always follow your manufacturer's charging guidance.