What happens to current and voltage when a laptop is plugged in and has a fully charged battery?

by on December 6, 2010

Q: What happens to the current and the voltage when we keep our laptop battery chrger plugged in to our laptop aftr it has been charged to 100% ??

i do know that lithium ion battery packs come with protection circuit.

what exactly happens to current and voltage if they are cutt off..??

which parameter is essential or which parameter shud we monitor while designing a protecting circuit for battery..?? voltage or current ??