Short battery life.

[Jaye]

I have a ibm t20. When my laptop's unplugged, my battery last for an hour. Can you please suggest a laptop battery that's guaranteed to last 3-4 hours. Thanks in advance.

[RealBlackStuff]

You could try a T30 battery, these fit in a T2x (but not the other way around).
They have a larger capacity than T2x batteries, but I think 3-4 hours is Utopian.
You could also buy an additional Ultrabay 2000 battery to give you an extra 1-1.5 hours.