Smartphone users may be surprised during the winter by a rapid drop in battery charge or their devices shutting down despite the battery still having power. This problem may raise concerns about battery damage and the need for replacement, but the reason may be related to the effect of low temperatures on its performance, and not necessarily permanent damage.
Apple explains on its support page for dealing with high and low temperatures that using an iPhone or iPad in extremely cold environments may temporarily reduce battery life and may cause the device to shut down. It adds that battery performance returns to normal when the device is used again in higher temperatures.
How does cold weather affect a phone's battery? What causes a drop in charge or a device to suddenly shut down? And how can you protect your phone from these problems during winter?
Most modern smartphones rely on lithium-ion batteries, which store and release energy through electrochemical reactions within the cells. When the temperature drops, these reactions slow down and the battery's internal resistance increases, limiting its ability to provide energy with its usual efficiency.
As a result, the user may notice a faster decrease in the charging rate or a decline in the phone's performance, especially when running functions that require high energy consumption. This does not necessarily mean that the energy stored in the battery has run out completely, but rather that the battery may be less able to provide the required energy in those circumstances.
Apple explains that iPhones and iPads are designed for use in ambient temperatures between 0 and 35 degrees Celsius, and the same applies to Galaxy devices, where Samsung also specifies an optimal usage range between 0 and 35 degrees Celsius, with the warning that prolonged use or storage outside this range may affect battery performance and lifespan.
Why does the battery drain or the phone suddenly turn off?
Extreme cold can reduce the voltage the battery can supply, making the phone unable to operate its components stably. When the available voltage becomes insufficient, the device may shut down automatically even though the battery indicator still shows a remaining charge percentage.
Google provides a clear example of this in the Pixel phone guidelines, indicating that the phone may suddenly shut down if its temperature drops below zero degrees Celsius, and advising that it be warmed up gradually. However, this information pertains to Pixel devices and does not mean that all phones shut down at the same temperature.
The severity of the effect varies depending on the phone model, the duration of its exposure to cold, the condition of the battery, and the nature of its use. Older batteries may also be less able to provide the required power when the temperature drops, making the problem of sudden shutdown more apparent.
It is important to distinguish between a temporary decline in performance and permanent deterioration. In many cases, battery efficiency improves when the phone returns to a suitable temperature, and the user does not need to replace it simply because the device turned off during a cold day.
However, repeated or prolonged exposure to extreme temperatures can harm battery life, and Samsung warns that prolonged use or storage at temperatures below zero or above 35 degrees Celsius may lead to decreased performance, increase the likelihood of sudden shutdowns, and reduce battery life.
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