19 Sep How To: Charge Your iPhone’s Battery Faster
It’s no surprise that with faster processors, HD screens, increased web browsing and fancy camera software that the batteries in our smartphones are struggling to keep up.
Most smartphones these days require a recharge everyday to keep them going, which can become quite inconvenient when you’re on the go or when time is not quite on your side.Thankfully, there are easy to implement measures you can take to speed up how quickly the battery in your iPhone recharges, to ensure your iPhone is ready to go when you are.
Before we get into how to speed up the recharge process, it’s important to understand why your smartphone charges slowly:
Why Your Smartphone Charges Slowly
As a general rule, there are two major factors that determine just how quickly your device charges. These two factors are the maximum amperage (the strength of an electric current expressed in amperes) of the USB socket or wall charger, and how your device handles the transfer or power from the socket/charger.
No matter what kind of charger or socket you use, they all have a max amperpage. The average is usually between 500 milliamps (mA) and 1.5 amps (A). Most PCs and laptops (unless specified otherwise) use 500mA sockets, with the exception of USB 3.0 sockets, which are around 900mA. Wall chargers differ in terms of their max amperage (this is usually written on the charger), but they are usually between 0.5A and 2.1A. The max amperage dictates the theoretical charging rate of your device, which will give you a rough indication of how fast your device will charge.
However, while there is a defined max amperage, it is only through negotiation that your device actually decides how much power it wants to draw. Basically, when your device is plugged into a charging socket or wall charger, the USB controller in your devices talks to the USB controller attached to the socket/wall charger (or if there is no controller available, your device reads the voltage flowing across the four USB points). It is from this information that your device decides how much amperage to draw and thus how quickly it will recharge.
It’s hard to know how your device decides how much power to draw, as each device will be different. For example, an iPhone will only recharge at its max speed if the right driver is in place for power negotiation, otherwise it will fall back to slow charging. On the other hand, you’ll find it difficult to quickly charge an Android device when plugged into a laptop or PC that also wants to initiate a data connection, which then reduces the max draw over the power lines.
If your device uses a lithium-ion battery (which at present is most devices), the device will reduce their power draw as the battery reaches capacity, to preserve the longevity of the battery.
You can check how much power your device will draw by using a tool like the Practical Meter. The Practical Meter is a small dongle that shows you how much power your USB device is drawing, which in turn shows how quickly it will recharge.