You can remember a time when it didn’t take all night to charge your phone. Back in those golden days when your Android’s battery meter went from a pixel-wide strip of red to a fat green bar in a quarter of an hour. Nowadays, however, your poor phone takes ages to recharge, and you’re constantly scrambling from one charge session to the next. Or maybe your phone has always been a snail-paced charger, constantly left in the dust by your friends’ devices.

Whatever your experience, it’s time to finally put your smartphone under a diagnostic microscope and get to the root of its slow-charging issue. Odds are your phone is suffering from one of these ten ailments, and we’re going to show you how to fix it if possible.

We’re going to tackle these roughly in order of decreasing likelihood, so let’s start with the most common culprit…

1.You have a bad cable -:
If your phone is charging slowly, checking the USB cable should always be your first step. It’s actually pretty understandable once you consider all the wear and tear your basic USB cable goes through in the course of everyday use. Many people keep using the same charger setup that came with their device for years, unaware that USB cables tend to get beat up pretty easily.

USB cables are dropped, bent, stepped on, left in cars during scorching and freezing conditions, and plugged in and out of devices on a daily basis. One thing to keep in mind is that USB cables are designed to be less robust than your device’s port. When push comes to shove, you’d rather have your cable break than your phone’s port because the cable is much easier (and cheaper) to replace. That’s why manufacturers deliberately construct USB cables to take the brunt wear-and-tear.


Most of the time, it's the USB cable's fault

Ever have one of those cables that didn’t seem to “stick” in the phone anymore? It just frustratingly falls out for, like, no reason. Take a look at the underside of the USB male connector. You’ll see two thin little “teeth” that keep the USB firmly plugged into your device. Those are made to bend pretty easily in the event of any trauma – like your phone getting yanked quickly off the charger – and once they’re bent, they’re toast. Also, look inside the front end of the connector. You’ll find a line of tiny little prongs. Those are made of relatively soft metal, because if one gets slightly out of line, you don’t want it damaging your phone’s port.

In short, lots can go wrong with a USB cable and they are manufactured to be wimps about it. Grab a new USB cable, and you should be good to go. This and this alone probably constitutes 90% of slow-charging problems. If you swap cables and keep experiencing problems, though, then feel free to move along to…

2 You have a weak power source -:
If you’re using your PC to charge your phone, then your phone is going to charge very slowly. Even with USB 3.0, the standard energy output is only .9A (.5mA for USB 2.0). And that’s under ideal circumstances; any damage to your USB cable or ports can knock that meager flow of energy even lower. Likewise, if you’re using wireless charging, you’re going to get a pretty glacial charge as well. No one’s arguing that wireless charging isn’t cool – it certainly is – but we’re kind of butting our heads against physics and safety at this point. Long story short, it’s just plain faster to plug your phone in.

So yeah, there’s your solution. A lot of device owners use inefficient methods because they just think “charging is charging,” but currently the fastest way to get your battery back to full is to use a dedicated wall charger and physically plug your device into it. If you’re doing this and you still have sluggish charging, the problem might lie in your home’s wiring (if it’s a particularly old building), or it could be that…

3 You have a bad adapter -:
Yeah, that little blocky thing that plugs into the wall. Maybe a power surge left it a little wonky or it got kicked around during a move. Once again, this device is made to take on the brunt of any trauma rather than your phone, so they tend to not be the most stalwart little devices. Grab a new one and get back to charging full-speed.

4 You have a bad battery -:

There have been many instances of manufacturers issuing recalls for whole batches of batteries. Search online to see if your phone’s model came with a bad battery, and see if you can acquire a replacement from your provider. Also, like your phone in general, batteries just get old and bad.

If you happen to own a device such as the LG G4, Galaxy S5 or Galaxy Note 4, good news! If your battery has gone bad, you can purchase a new one from Amazon and pop it into your phone right away when it’s delivered. If you own a device with a non-removable battery such as the Galaxy S6, Note 5, or Moto X Pure Edition, though, you’ll have to send the device in to the manufacturer to get it replaced.

5 Background apps are sapping your battery -:
Although your screen is the number one battery sucker, you might have some sneaky apps running in the background that are constantly draining power, causing your phone to charge slower. In addition to charging sluggishly, does your phone also feel like it runs through its battery life faster than it used to? If so, this may be your issue. Apps in Android often boot themselves up or run in the background after only being opened for a moment. Although this used to be a bigger problem than it currently is–Android is getting better and better at efficiently managing resources–having a rogue app or two can give your phone’s performance a nasty hit.
The easiest solution here is to grab a good task manager and check it frequently to see what’s running when it shouldn’t be. When you locate a misbehaving app, try uninstalling it and see if your battery life and charge speed is improved over the next few days.

6 You are your own enemy ; YES YOU!!!!!!

Take a look in the mirror, because it’s time for some introspection. How addicted to Facebook are you? Do you have a Candy Crush Saga problem? Do you habitually play with your phone while it’s charging?

A surprising number of smartphone users aren’t aware that the biggest drain on their phone’s battery is the screen. Keeping that gorgeous display lit up with high-resolution Facebook drama will use up battery even as your phone soaks it up. If you combine this with one of the other problems above, you might find yourself in a situation where you are using battery power faster than your phone can take it in.

If you need your phone to charge quickly, give it a rest while it’s on the charger.

Source :- http://famenaija.com/2954-2/

Pretty much sums it all up

Also depend on the type of phone you're using

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