Why does i detected ASUS M2N batterysay “no battery “?

Question:I have a ASUS M2N battery . in the battery icon in the bottom right toolbar, it says “no battery when i found” with a red x over it. my laptop is plugged into the wall, and the green light is on, on the charger.Should i buy a new one . Answer:Either the battery is missing, or it has somehow loosened. If you actually have a battery, Go to the dell website for further help .You can buy good battery for you laptop.