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How to make my smartphone battery last longer

Authored by: Kris Carlon — May 11, 2014

One of the joys of lithium batteries – one of the most popular battery types available today – is the fact that the old ''battery memory'' problems do not affect them. But this doesn't mean that you shouldn't look after your battery at all. With a simple couple of pointers you can get longer life and better performance out of your battery.

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Non-removable or replaceable, battery care is important for all smartphones. / © AndroidPIT

Charge regularly

Because there's no battery memory, there's no reason to fully discharge and fully recharge your battery. Li-Po batteries don't respond well to low-voltage and can even cause you issues if they drop too low, so whenever that 30% battery warning pops up you should seek power. Anything around 10-20% battery remaining is the best time to charge though. Try to never let your battery fully die.

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Finding all the battery optimization settings mean you'll need to rely on this less frequently. / © AndroidPIT

Don't overcharge

I've talked about this before in my general battery saving tips, but it's a really bad idea to overcharge your battery. That means plugging it in overnight for a full 8-hour charge cycle when it only needs two and a half hours. Considering the stories of exploding batteries last year, do you really want a superheated and potentially unstable power source lying next to your head while you sleep? I charge my device over breakfast or at my desk at work and top it up if necessary in the evening. If you want to know what happens with ''thermal runaway'' you can read my tips to stop your battery exploding.

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With accidents like these occuring, the last thing you want is an exploding battery next to your head. / © Sammy Hub

Think about charge cycles

As long as you're not overdoing it with all-night charging you're off to a good start already, but remember that batteries have a lifespan based on charge cycles. This means that you'll get several thousand charges before your battery dies for good. But the amount you charge each time and the amount of battery you've used before you do so (depth of discharge) affect the number of charge cycles you'll get out of your device. Ideally, you'd charge from around 25% to 80% once or twice a day.

battery test s5 2
Despite being made of the same stuff, battery performance varies greatly. / © sammobile

Turn your phone off

If you want to maximize the lifespan of your battery you might consider turning it off once in a while. When you charge it, for example. Not only will this make it charge faster, it will also lessen the amount it heats up while charging. Plus, if you're about to go into a couple hours of meetings or the cinema, why not turn your phone off to give it a break? This will also prolong your battery life during the day and it might even get you away from smartphone-dependance a little too.

AndroidPIT Samsung Charger Dock
If your battery is removable, charging it outside of your phone in a cool area is best. / © Samsung

Keep your cool

Even though smartphones with lithium batteries (lithium-polymer and lithium-ion) come with thermal switches to avoid overheating, there's no need to tempt fate. Avoid overcharging, as mentioned above, but also avoid charging your device in hot areas, like on the car dashboard or on top of a hot object like a computer or the refrigerator. Leaving your phone charging in direct sunlight is also a bad idea, as it basically adds fuel to the fire, so to speak, where overheating is concerned. Try to find a cool place to charge your device and keep an eye on it whenever possible. Avoiding dust is also a good idea.

Do you have any other battery tips? How long until you usually need to replace your battery?

Kris Carlon comes to the AndroidPIT Editorial Team via a lengthy period spent traveling and relying on technology to keep him in touch with the outside world. He joined the Android community while resurfacing in civilization back in 2010 and has never looked back, using technology to replace his actual presence in other people's lives ever since. He can usually be found juggling three phones at once and poring over G+ posts, Reddit and RSS feeds.


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  • Shahriar Farhan May 13, 2014 Link to comment

    Its only some good tips...Like it

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    Guy Devos May 12, 2014 Link to comment

    There's no such thing as overcharging.

  • Paul Warner May 11, 2014 Link to comment

    I've always left my phones plugged in overnite for years. Never had a problem in fact that's the only time I get to charge them..

  • david harris May 11, 2014 Link to comment

    What if u don't have blocking mode I have a lg g2. please help

  • David D. May 11, 2014 Link to comment

    What about undervolting?
    It's easy:
    1. Flash a suitable kernel ( my faves are Perseus and Adam)
    2. Download Voltage control app from the Play Store.
    3. Undervolt carefully! I suggest decreasing voltage values by 50. If you undervolt too much, your device is liable to freeze!
    BTW this also solves overheating issues.

  • Babak Sanei May 11, 2014 Link to comment

    it's NOT going to overcharge, when you plug a smartphone overnight. all phone have a power management chip which control charging process, when battery reach 100%, it automaticaly cut-off voltage and current from battery.
    check it out on wikipedia and

    • John Amadei May 11, 2014 Link to comment


    • Kris Carlon
      • Admin
      • Staff
      May 12, 2014 Link to comment

      Hey @Babek, they do have a cutoff switch - which I mentioned - but it doesn't always work, hence me saying they have one but not to tempt it if you want to be cautious. But if you trust the management chip then be my guest. As mentioned below, plenty of people leave their phones charging overnight and have no problems, but some people have phones exploding and setting fire to their house.