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> Take your iPhone out on a 20F day and see how long that 100% charge lasts! (Spoiler alert, likely a few minutes). It's true that Lithium Ion batteries lose t

> Take your iPhone out on a 20F day and see how long that 100% charge lasts! (Spoiler alert, likely a few minutes). It's true that Lithium Ion batteries lose their charge in cold temperatures, but not that quickly. An iPhone in 20F will still hold charge for several hours. (And of course, under normal operating conditions the iPhone will be close to a warm human regardless of ambient temperature, so they rarely get that cold.)

Phlarp 10y ago
iPhones have a single Li-ion cell and the phone itself sips power compared to an aircraft motor. For a slightly more apt comparison-- try flying your DJI phantom on a cold winter day. It won't last long.
arprocter 10y ago
Grandparent is right IME HN chain from when it happened to me - https://news.ycombinator.com/item?id=10939215 https://news.ycombinator.com/item?id=10939215
- napoleond 10y ago
  Your account sounds different from what GP describes (ie. descending from full charge in a few minutes, without any activity). I live an a region that regularly stays below 0F for months on end and have never seen or experienced such extremely accelerated loss of charge. However, I have certainly seen phones lose charge more quickly once they get below 50% or so--I never correlated that with the cold, but maybe there is a connection.
  - deleted 10y ago
    [deleted]
  - arprocter 10y ago
    I wonder if we have different phones? Mine is a regular iPhone 6
- Klinky 10y ago
  Theses reports seem pretty anecdotal. Is there some hard evidence or an official spec? Seems like a bunch of people with glitchy phones or batteries blaming the weather.
  - arprocter 10y ago
    It has only happened once, but I doubt the phone is faulty - it instantly went from a charge in the 40% range to a 'plug in now' screen, eventually returning to normal with the same amount of charge once I got out of the cold. Could be that different phone models behave differently in low temperatures?

Phlarp 10y ago

iPhones have a single Li-ion cell and the phone itself sips power compared to an aircraft motor. For a slightly more apt comparison-- try flying your DJI phantom on a cold winter day. It won't last long.

arprocter 10y ago

Grandparent is right IME HN chain from when it happened to me - https://news.ycombinator.com/item?id=10939215 https://news.ycombinator.com/item?id=10939215

napoleond 10y ago
Your account sounds different from what GP describes (ie. descending from full charge in a few minutes, without any activity). I live an a region that regularly stays below 0F for months on end and have never seen or experienced such extremely accelerated loss of charge. However, I have certainly seen phones lose charge more quickly once they get below 50% or so--I never correlated that with the cold, but maybe there is a connection.
- deleted 10y ago
  [deleted]
- arprocter 10y ago
  I wonder if we have different phones? Mine is a regular iPhone 6
Klinky 10y ago
Theses reports seem pretty anecdotal. Is there some hard evidence or an official spec? Seems like a bunch of people with glitchy phones or batteries blaming the weather.
- arprocter 10y ago
  It has only happened once, but I doubt the phone is faulty - it instantly went from a charge in the 40% range to a 'plug in now' screen, eventually returning to normal with the same amount of charge once I got out of the cold. Could be that different phone models behave differently in low temperatures?