Fenn wrote:
Sorry - type-o-graphical error. "batter packs" should have read "battery packs". The laptop batteries that they sell for high prices are actually made of a number of replaceable cells which look like AA or AAA batters encased in plastic. So the "battery" is really a pack of smaller batteries. When the original battery stops holding a charge some people cut them open with a dremel / rotary tool and replace the cells. You can get them with or without soldering tabs. There are how-to videos and blogs if you google.
I was going to do this on an IBM Thinkpad 600, but whilst looking
into it I found that these laptops have a fault in the charging
circuit that damages the batteries.
Quote:
IBM ThinkPads are generally good machines, but at least some models (including the 600 series) have defective battery designs that lead to premature battery death. The 600 is an old enough model that we've collected lots of data about the problem. For newer models we can't yet be sure, but it's probably wisest to avoid these models.
With another Laptop, the battery contained about nine
Panasonic 18650 batteries.
Replacing them with original batteries would have cost
more than the laptop was worth.