When it comes to iPhones and batteries, it somehow falls short of what we'd normally expect out of a good smartphone. Considering the fact that the other camp seems to produce insanely powerful batteries for its smartphones, despite all arguments to the contrary I think Apple should be doing something about iPhone batteries.
With the release of iOS 8 and the launch of iPhone 6 and iPhone 6 Plus, battery issues are cropping up frequently. Generally, the iPhone 6 seems to hold up good for a day's charge (and the iPhone 6+ more) but owing to the larger battery capacity, it takes longer to charge up. But you can charge your iDevice faster. Here's how:
How to Charge iPhone 6 Faster
Use a 12W iPad charger for your iPhone 6/6+
A typical Apple charger that ships with the iPhones is a 5V, 1A charger. It's okay-ish in terms of the speed at which it charges your iPhone but surprisingly (or not-so-surprisingly), if you happen to use a 10W or a 12W charger (that ships with an iPad), you'll notice that your iPhone 6 charges faster. And it applies to an iPhone 6 Plus too (albeit not to a large extent).
Also Read: How to Charge Your iPad Faster & Better
If you've got an iPad charger lying around, use that instead of the regular charger. It doesn't harm your iPhone because the iPhone battery only permits 1A but for some reason it still charges faster.
Try the Airplane Mode While Charging
This is one of the silliest but surefire ways to charge your iPhone 6/6+ faster. The next time you charge, put your iPhone on the ‘Airplane Mode'. Sure, you won't be able to make/get calls, use 3G/4G/LTE or – if you didn't try turning on Wi-Fi – not be able to use Wi-Fi too. But this total radio-blackout of your iPhone has one big advantage: it helps the battery charge insanely faster.
In the Airplane Mode, the phone can charge up to twice as fast (or more). This tip can be handy if you want to quick-charge your iPhone or are in a hurry to get a little bit of juice charged up on your iPhone.
Switch off When Charging
If you can turn off the phone while it is being charged, the iPhone will charge a lot faster than usual. By doing so, you don't allow any continuing functions to consume battery while it's being charged. It hugely contributes in expediting the charging of the battery.
Power Cycle Frequently
It is generally recommended (but seldom followed) that you power-cycle your iPhone's battery once a month. A power-cycle is when you let the iPhone 6/6+ charge out completely (0%) and then charge it to full capacity (100%). When it's being charged, you shouldn't use the iPhone 6/6+ at all. This can help keep the battery going good for a long time.