The 100LX stays on when charging batteries. This is because the charging circuit is controlled by software, and the CPU needs to be running while charging. HP advises that you not insert RAM cards while the power is on. If one's in the slot, fine. But don't insert another one while you're recharging your batteries.
David Shier CompuServe ID: [75030,3374]
[The screen also remains on while charging. However, unlike the CRTs your desktop uses, an image on an LCD display doesn't "burn in" if the display is left on -- Rich.]