KenO wrote:
Has anyone checked what the Maximum Voltage charge is for the Toshiba
PA2490U (using older Toshiba LapTops)?

Reason am asking is I recently read "How to Prolong Lithium-based
Batteries" http://batteryuniversity.com/learn/a...ased_batteries
which mentions "Specifying battery life by the number of discharge
cycles is not complete by itself; equally if not more important are
temperature conditions and charging voltages. Lithium-ion suffers
stress when exposed to heat and kept at a high charge voltage....The
voltage level to which the cells are charged also plays a role in
extending longevity...Realizing the stress on the battery, some laptop
and cellular phone manufacturers choose an end-of-charge voltage that
is less than 4.20V/cell."

Am wondering how conservative Toshiba decided to be?

You can find that out with a voltmeter.
And what are you gonna do about it if you don't like the number?

Life is a GIANT decision tree. At the end of VERY FEW of those branches
are things that can make your life better. 99.9999% of those branches are
roads to nowhere. Others are roads to disaster.
The more time you spend fussing over things you can't affect,
the less time you have to travel the roads to the good stuff.

When you need to compute, turn on the computer. When you don't,
turn it off. Simple. Is it really worth the possibility of
setting your house on fire to make it complicated?




Thanks

Ken