Does iphone charge when off yahoo
This is a calculated estimate and may differ in practice. There are some unknowns which will be estimated.
The iPhone 6 Plus has a battery capacity of 2915mAh (according to: iPhone 6 vs iPhone 6 Plus: which should you buy? - Telegraph )
The standard charger that ships with the phone will charge at 1A.
Given this, allowing for a 20% efficiency loss for heat and resistance (this could be different, I haven't seen any official figures, but it is conservatively reasonable for a modern Li-Ion battery), it would take approximately 3.8 hours or 3 hours 48 minutes.
That would be based on a battery that is completely discharged and as I said, the efficiency loss is a guess.
However, according to 9to5mac, you can charge the phone with the more powerful charger that ships with the iPad, which is 2.1A and according to the below article, charges it at 2.1A. Although they have said in their tests that it charges faster, there is no definitive evidence to suggest it charges at 2.1A, but if it does, based on the same calculation, it would take 1.7 hours or 1 hour 42 minutes.
The Telegraph have done a timed charging test with a 12w charger (the 2.1A iPad charger or equivalent) and they claim it took 2 hours 30 mins.
This is a practical result, but is with the iPad charger.
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