My laptop which is from late 2012 has a worn down battery which only lasts for 15 minutes.For some reason it charges from 15% to 100% in 1 hour of active web browsing and coding. But my Nexus 9 tablet which has a healthy battery takes 3 hours to charge from 15% to 100% without using it. If I try to use my Nexus 9 while charging it says 12 hours to charge.
Do worn down batteries charge faster than new ones?