Battery instantly dropping to 1%; why?

[AC Question]

Dear Sir/Madam

My phone is 2 years old now, but was running extremely well until last week...

Now my phone battery is used normally from 100%, but then instantly drops to 1% when it reaches any value between 60-90% (from experience).

I would like to understand why this is happening and how to fix this issue.

To further my point, on one occasion when it dropped, i looked at the total battery use, and where it was use, and it only totaled to 23%. Also, when plugged into chargers it charges to 100% in approximately 5-10 minutes, which is extremely abnormal.

Regards

Dilan Sheth

 

[belodion]

It could simply be that the battery needs replacing.