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This makes almost no sense to me at all. There is no way for the computer to know whether or not it is plugged into a multiple outlet. And since the wall adapter does not even use ground, there is even less likely a problem. : When re-charging a battery with a thinkpad 755 cdv, or any other : models for that matter, is it necessary that one plug directly : into an outlet. An ibm tech. support person told a relative of : mine that she could not plug into a 5 plug adaptor, that it : would not recharge correctly in that condition. Now she : gets the critically low tone whenever she turns on the machine, : even if the ac is plugged in. This message comes up often. The manual states that the ThinkPads batteries have some circuitry which makes it better NOT TO fully discharge, and that this will REDUCE the life of the battery. I have recently purchased a repaid charger which says that the batteries should be fully discharged periodically, but I am not sure this complies with IBM product design. : Also, am I correct in recalling that the best policy is to : always let the battery run down to as low as possible before : plugging in for a recharge? -Brian -- Acoustics Department ................................. katz@sabine.acs.psu.edu Penn State University ..................... http://www.acs.psu.edu/users/katz/ State College, PA 16802 ................................. (814)863-9832 Office USA ..................................................... (814)865-3119 Fax