asus zenfone max m1 battery percentage suddenly falls

[abhi31232]

Sir my model is asus zenfone max m1 (not pro) and my problem is some times I am using mobile and my battery percentage is 78% and suddenly it falls to 76% and then it is normal and this problem happens after some times like this falling 2% battery

[fussion_ASUS]

Hi, we’d request you to follow these below steps to resolve the slow charging issue you’ve been facing.
1. Try using another charger to charge the device and see if the device is charging normally.
2. Use your original charger to charge another device and see if there are any abnormalities in charging the other device.
3. If there is no problem with the charger, take a full backup of the device and perform a factory reset. 
4. If the problem persists even after the factory reset, we’d suggest you visit the nearest service center for further assistance. Locate service center here: https://www.asus.com/in/support/Service-Center/India 

[abhi31232]

And sir battery percentage suddenly falls please give solution

[fussion_ASUS]

Hi, we suggest you to please visit the nearest ASUS service center for better assistance. We request you to call the service center before visiting. Locate here: https://www.asus.com/in/support/Service-Center/India

[abhi31232]

My Question is when will asus zenfone max m1 (not pro) system update will come