Normally I leave my MS Surface plugged in all the time and my cell phone and Kindle charging overnight. Is this practice negatively affecting the lifespan of the batteries? Is there a better way to lengthen a lithium battery’s lifespan?
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A cycle happens when you take a battery from discharged to a charged state. This can only be done so many times as the cells lose a little capacity every time. To prolong the life of lithium cells, avoid deeply discharging them. Connect the device to a charger before it is empty. Usually the device will shut down before too much damage occurs. You can keep the battery topped up if the charger works correctly and cuts the power at the voltage that represents full. For prolonged storage, charge batteries to about 60 percent. They will slowly discharge on their own.
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