Regarding charging

[senthu1996]

Is it best to charge my mobile to 100% or to remove at 80 %and at what percentage I have recharge it again

[OshanMadusanka]

It's better if you can charge it to 100% But if you really want to unplug it, it's ok to unplug it after 80%. But Don't do it often. It's good to plug in 15%

[senthu1996]

usually I charge my mobile when its reach 20% until its comes to 100% but I read out an article it's not good to charge for an long time until its comes to 100 it will reduce the battery performance it's better to remove at 80%

[OshanMadusanka]

When you fully charge your phone one time, it will complete one cycle. one cycle means 0 to 100. Battery health depends on cycles. Normal smartphone battery (Li-Po) has 300-500 cycles.

[senthu1996]

so after this cycle finish the battery performances will be reduced

[senthu1996]

so if I charge to 80 -90 percent the cycle will not complete know

[Sham12145]

1st factory reset your device. next *#0228# quick start > ok
next *#9900# calibrate battery

[Sham12145]

then isn't battery drain problem in my device but have slow charging problem

[Dilsan_05]

Yes. There is charging cycle limit. When it starts to exceed Battery performance will REDUCE.

[MiyuruG]

Charging beyong 80 stresses the battery and would sometimes overheat it. It's better to plug in at 20% uptill 80% this would last the battery 3 times more than the normal lifespan since it would not use 1 full battery cycle either.. If this is followed the battery wearout would be 0.22 cycles per charge.

Also make sure to re calibrate the battery once a month that means draining it down fully till battery is 0% then charging it back to 100% this would ensure the health of the battery.