![]() Specifically, they estimate that at -18 degrees Celsius a Li-ion may only deliver 50% of its capacity.ĭuring last winter’s Polar Vortex, Global News did an experiment showing that an iPhone left outside dropped 14% in only 30 minutes, while an identical phone left inside dropped only 1%.Īpple specifies that their batteries work best at a range of 0 degrees Celsius to 35 degrees Celsius. Lithium-Ion batteries suffer in extreme cold temperatures:Īccording to Battery University, cold temperature “ increases the internal resistance and diminishes the capacity” of a Li-ion battery. ![]() ![]() Li-ion batteries carry certain advantages – they charge fairly quickly and don’t need to be completely depleted before recharging (in fact, it’s better to recharge at 20% than waiting for your phone to die). Unfortunately, these batteries don’t do so well when the temperature outside drops. This is the most common battery technology found in rechargeable devices. Winter weather can be beautiful, but a dead iPhone is a sad thing The iPhone batteryĪll iPhones use a type of battery called Lithium-Ion (sometimes abbreviated Li-ion).
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