I was having trouble with a old battery and or dodgy cheap cables. At first I bought a new battery but doubt the cables were charging properly. But I found the cables would not connect to notebook anyway so I got some new cables which seem to charge and connect to a notebook correctly. I think I may have since upgraded to the 20160809 build. But I am finding now that my GT-I9192 is suddenly switching off while showing for example, 50% battery and 5 hours remaining and without a low battery notification. I did not ever experience this behaviour before changing the battery or I think, before I recently upgraded to be due to the new Build.
What is more likely to cause the behaviour; the upgraded ROM, quality of new battery, or something else? Thanks