Smartphone Batteries

It is frustrating to see our smartphones about to die just when we need them. The dreaded
low battery warning leaves us cursing manufacturers for creating a device with such a short
battery life. But before you launch into a rant, the lack of long-term battery life in our
smartphones is down to human error!
Many users believe that charging our smartphones in short bursts will cause long-term
damage – but they couldn’t be further from the truth. According to a site from battery
company Cadex called Battery University,
charging_lithium_ion_batteries, it is better to charge your phone in short bursts or run the
risk of damaging your SmartPhone battery’s long-term lifespan.
Lithium-ion batteries are sensitive to their own version of stress. If you leave your phone
plugged in when it’s fully charged you will likely add to the battery’s stress. When your
phone reaches 100 per cent it gets “trickle charges” to keep it at 100 per cent. Unfortunately,
this keeps the battery in a high-stress and high-tension state which wears down the
chemistry inside the SmartPhone. Battery university compared it to relaxing the body after
exercise: “Li-ion does not need to be fully charged, nor is it desirable to do so. In fact, it is
better not to fully charge, because a high voltage stresses the battery, wearing it away in
the long run.”
They also suggested not charging your phone over a long period of time, instead, charging it
regularly throughout the day. Charging your phone when it loses 10 per cent battery is the
best scenario. The batteries will remain a lot happier and keep their long-term lifespan
intact. Keeping your phone cool will also help preserve it’s long-term battery lifespan
(especially out of direct sunlight) and suggests to remove it from any causes that may
insulate heat while charging.
[Thanks to Ian Grant for sourcing this information]

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