Battery problem topic

Hi guys,

I'm running cataclysm + elemental kernel and everything was working fine but from Saturday to Sunday i let the phone's battery goes down to 0. Next day, i connected the charger to the nexus 5 and the phone was not able to boot. My apps were being optimized and it never completed for all aps. So, i let the phone charge 30 minutes and then i was able to turn it on. Now the problem is, the phone charged extremely slowly and never reached 100, only 98?? Another thing, is that now my battery is draining quickly. It drained 15% over night without anything turned on (not even WIFI) and checked with GSAM battery and android system was with 26% of usage . It could be anything related with the charger?? It has been working fine for more than a year. I would like to try to understand what might be the problem before trying return to stock and check if it solves this.


Thanks in advance for your help!