Question : Problem: aser aspire 1640z laptop  display

Dear Sir ,
 i have aser aspire 1640z , its display brightness becomes dull when i plug off the power cable from it and it becomes bright when i replug the power cable .
i want to know is it possible that its display brightness remains bright even after taking out the power cable from the laptop ?
please advice
regards

Answer : Problem: aser aspire 1640z laptop  display

i don't know if it is possible; it is  a power saving feature
so if you can disable it, your battery will be low much faster !