Leaving your cell phone charging all night damages the battery: myth or truth? Lithium-ion batteries (found in most phones) have a fixed number of charge cycles. It is advisable to charge it throughout the day and prevent it from running out completely.
Experts recommend charging from zero to 100% (i.e. a "charge cycle") at least once a month to recalibrate the battery and extend its life. To maintain good battery performance, meet certain conditions: What type of cable should be used to charge the phone?