2.1 amp charger for iPhone

sprocket2107

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Mar 4, 2011
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I need a new car charger and was looking at these two:

Just Mobile Highway Pro Charger - Apple Store (U.S.)

Dual Car Charger for iPod, iPhone and iPad by Incase

The first one has a 1 amp and 2.1 amp charger and the second has two 2.1 amps. Is it safe to use either one to charge my iPhone? I know they both say for iPhone, iPod and iPad but I wasn't sure if charging at 2.1 amps was bad for the iPhone. I like the first one a lot and didn't know if I could plug in 2 iPhone's without receiving any ill effects.
 

WebbitDesigns

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Jul 11, 2014
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It wont charge any fast if you use a 2.1 amp charger you will only heat up the battery
The charging rate is limited by the phone itself, so as to not charge the battery faster than specified by the manufacturer
 

HankAZ

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The Apple store lists their own 2.0A and 2.1A (10W/12W) iPad chargers as compatible with iPhones and iPods, as well. There’s no reason why a 2.1A charger from Apple would be compatible and a third party 2.1A charger would not be. Just make sure whatever you get is MFi certified for your own protection.
 

Scorpion667

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My phone definitely charges faster with the 2.1 iPad charger.

I have timed it. It's definitely faster.

WebbitDesigns is actually right in that the firmware limits the charging rate on all modern smartphones. But compared to my Android phones (Moto X, Galaxy S2) the iPhone benefits much more from the 2.1amp charger, showing that the iPhone's software amp cap is higher than my Android phones. I can go from 0 to 85-90% in an hour. Full charge in 80-90 minutes.

source: hacked Galaxy S2 kernel for faster charging as even while charging from 2amp charger, the battery would still drain with GPS on. Bumped the cap to 1100mAh and problem was solved. Phone is still alive, 3 years later =)
 
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