I've been having issues with my battery life. I'm using the 4gb ram, 64 GB version mate 8 for the past 14 months. My battery life for the past 2 months is really bad. I start my day (8am) with a fully charged battery (100%) and by 5pm, my battery used to be at 50% without charging it during the day. Nowadays, my battery reaches 50% by 1pm. After 50%, my battery drains insanely quick, it goes from 50% to 20% in just 5 minutes and 20% to 0% in less than one minute. I've noticed that once the battery starts draining after 50%, there are few apps that I haven't set to keep awake running in the background which is Google+, Facebook Messenger and Instagram. Even after closing the apps, they still start running again within few seconds. The only apps that I have set to keep awake after screen is off are Facebook and WhatsApp and I have had this setting since I got the phone 14 months ago. Recently, my phone has been going from 80% or somewhere around this number to 0% and switching off and after connecting the charger, the battery goes from 0% back to 80% with 5 minutes. I've been told it's probably the battery that needs replacing but what about the apps that suddenly start running after 50% battery? Any advice?

I've found one in SS15 Subang called Fastech that has Mate 8 battery in stock and they charge RM 90 for it. My only concern is, what if it is not the battery and a software problem instead since I noticed a few apps suddenly start running in the background when the phone reaches about 50% battery and then starts draining. Whats causing those apps to run in the background.

I've found one in SS15 Subang called Fastech that has Mate 8 battery in stock and they charge RM 90 for it. My only concern is, what if it is not the battery and a software problem instead since I noticed a few apps suddenly start running in the background when the phone reaches about 50% battery and then starts draining. Whats causing those apps to run in the background.

my battery having issue after traveling and heavy usage of gps together with powerbank for fews days.

encounter phone battery drop faster when left 20%, after use a while direct drop to 10%.

i uninstall un use apps , clear cache/data maps, fb, wechat/whatsapp etc.
yesterday when battery left 17%, i play clash royale for a match bout 3min, battery drop to 8%, and when i play 2nd match, jus few second i c battery is at 4%, and 2 sec later shutdown.

my friend was shock also and suspect battery faulty. but when fully charge it can last until i off work around 5 o 6pm. but battery drop faster than be4.

any advise?

hw mch u change ur battery? i youtube c hw thy change, is nt too complicated but i don hav the tools to change and thoes battery that sold on lelong dono good o nt, some is rm49.9 with 3 months warranty and 89.9 with 1 year warranty and thy all looks the same to me. LOL