Why is my Nexus 5 taking longer time to charge?

[puneet anand]

why my nexus 5 taking longer time to charge

My nexus 5 sometimes shows 1hours 40 minutes which is the exact time it should charge from 0 to 100 but sometimes it shows 3 hrs sometimes 2hr sometimes 6 hrs.
I have a sony 5000 mah power bank. when i connect my nexus 5 to that with nexus 5 usb cable it still shows the same problem.
I have connected a couple of chargers but still same problem.
Can somebody tell me what the problem is?

 

[mrsmumbles]

Re: why my nexus 5 taking longer time to charge

Your battery may be wearing down.

 

[Rukbat]

Re: why my nexus 5 taking longer time to charge

Draining a battery to 0 every charge cycle can kill it in a few months. Never drain a lithium battery lower than 50% unless your life depends on it. (If you need an ambulance, the heck with the battery. If you need to call a friend, plug in the power bank first.)