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Nairaland Forum / Science/Technology / Phones / Questions About Your Phone’s Battery Answered (1165 Views)
Top 10 Reasons Your Phone Battery Dies So Quickly / Smart Phone Battery Myth We Should Stop Believing / Ways To Make Your Phone Battery Last Longer (2) (3) (4)
Questions About Your Phone’s Battery Answered by Abatsam111(m): 1:19pm On Jan 03, 2016 |
Battery problems on your iPhone or Android? Here’s what you need to know about how your battery works. Battery life is a perennial problem for smartphone owners. While our handsets have become faster and more powerful over the years, smartphone batteries often last less than a day under heavy use, or even moderate use after a few months. The lithium-ion battery has been around for more than two decades, and hasn’t fundamentally changed since Sony started producing them in 1991. And despite lots of effort being put into replacements, these batteries are likely to be with us for many more years. Here’s what you need to know about your smartphone’s battery. Do I need to charge my phone when I first get it? No. Earlier battery types like nickel cadmium had a “memory effect” that meant batteries would maintain a certain capacity based on how they had been charged and discharged. This meant that electronics products often came with advice to charge them fully and keep them plugged in for hours before using them. However, with modern lithium- ion batteries most people agree that there is no such effect and the batteries are more reliable. A smartphone is fine to run out of the box without “priming” it beforehand. For the same reason, you don’t need to calibrate your smartphone by running the battery all the way down. While this used to be the case, Apple and others no longer recommend it. Does battery life get worse over time? Yes, you’re not making it up, your battery deteriorates over time. Modern lithium-ion batteries are designed to withstand a certain number of “cycles” – a full drain of the battery. A cycle is equivalent to a battery fully draining, but this doesn’t all have to be from one charge. As Apple puts it: “You might use 75 per cent of your battery’s capacity one day, then recharge it fully overnight. If you use 25 per cent the next day, you will have discharged a total of 100 per cent, and the two days will add up to one charge cycle. The lifetime of batteries measure in cycles differs between different devices, but typically have between 300 and 500 full cycles before they reach 70 per cent of their original capacity – equivalent to a couple of years of use, although this graph from Battery University shows that capacity begins to drop fairly quickly: Does leaving my smartphone charging damage the battery? Not usually. There have been suggestions that keeping your phone charging overnight or constantly can force the battery to deteriorate, due to it receiving more power than it needs. Modern battery systems, however, know to reduce this to a trickle, so it only tops up a battery with the power you need. The exception is in very hot conditions. Heat causes lithium-ion batteries to decay slightly, reducing performance. Since charging a phone does heat it up slightly, combinining this with hot temperatures (over 30 degrees centigrade) can damage it. Try to keep your phone relatively cool when charging it, by placing it out of the sun for example. Should I wait until my phone battery has gone well down before recharging it, or can I charge it often? No – in fact, you should do the opposite. Modern lithium-ion batteries gain nothing from being powered down, and long charging cycles are actually worse than short ones. Partial discharges and charges actually tend to prolong battery life – 50 per cent discharges can happen between 1,200 and 1,500 times (so 600-750 full cycles) before capacity drops to 70 per cent of its original span, compared to 300 to 500 for 0-100 per cent charges. This effectively means running your phone down 50 per cent, charging it up again and running it down to 50 per cent again is better than a full discharge. Does turning off Wi-Fi and Bluetooth improve battery life? What about airplane mode? Wi-Fi and Bluetooth are not nearly as power hungry as they used to be, or as your phone’s cellular radio. Keeping them on is not likely to drain a huge amount of battery. Source http://preciousphones.com/six-questions-about-your-phones-battery-answered/ 1 Like |
Re: Questions About Your Phone’s Battery Answered by Obinovictor(m): 1:36pm On Jan 03, 2016 |
Good to know |
Re: Questions About Your Phone’s Battery Answered by robinicule(m): 6:40am On Jan 04, 2016 |
Re: Questions About Your Phone’s Battery Answered by austinepetro: 5:39pm On Jul 05, 2016 |
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