27++ slice vs 28++ slice - What are the differences between the two 9-cell batteries? I use a ThinkPad T410, 2516CTO. I need to buy one for a project which will take me to some remote areas without electricity for most part of the day.
As at Oct 23 2012, the 27++ battery has gone end-of-life. The replacement is the 28++ battery, which adds support for the new battery authentication feature in the T430, but it will still work in the older systems also. Other than this, the batteries are the same.