About Toshiba PA2522U-1BAS battery?

Question:I have a Toshiba PA2522U-1BAS batterywhich is 5 years old, the battery is run out very quickly so i have to keep putting on charge all the time. Does anyone know when the battery eventually packs up can i use Laptop constantly on mains power?Or i have a new one . Answer:yes! you can keep it on 24hrs a day, but take the battery off first, leaving the battery on while it is plugged into mains all the time will only shorten the life of the battery any way. Also leaving the battery on whilst on mains all the time is a fire risk.If you believe me you should buy new one ,for example: Toshiba PA3084U-1BAS battery , Toshiba PA3084U-1BRS battery , Toshiba PA3098U-1BAS battery , Toshiba PA3098U-1BRS battery I believe you are a wise man .