Possible to run computer on AC, without charging battery?

Compumind said:

Well...

If you have a laptop (or similar) with a sealed battery, it is imperative to let the battery fully discharge once in awhile.

This is very important with Li-Ion batteries which use a special charging circuit and software routines to "trickle" charge the internal battery.
OEM computers usually come with a battery maintenance monitor to tell you the health of the battery at any given point in time.

Best way to conserve on the user level is to pick a conservative power plan in Windows.
SSD based system will also give you more battery life than those with an HDD.

FWIW.

You never want to totally discharge a LiON battery. It actually causes the salts to stop holding a charge and can cause them to overheat.

bro67 said:

You never want to totally discharge a LiON battery. It actually causes the salts to stop holding a charge and can cause them to overheat.

That is untrue from what I have been taught in the industry.

A quick example is when your iPhone (Li-Ion) turns off due to insufficient charge. Nothing ever happened to those who recharged them to capacity.

I would appreciate it if you could substantiate that claim. Thanks.

May be a semantics thing. Totally, as in 0%, vs. letting the device shut off at a prescribed low threshold of, say 5%...like my Galaxy S4. Not sure I can get it to 0%, it stops and shuts off at 5%.

f14tomcat said:

May be a semantics thing. Totally, as in 0%, vs. letting the device shut off at a prescribed low threshold of, say 5%...like my Galaxy S4. Not sure I can get it to 0%, it stops and shuts off at 5%.

Exactly. It is a real-world measurement. It's never zero until it's zero.

Do you know what Coulombic Efficiency is? BU-808b: What Causes Li-ion to Die? Battery University A study of the relationship between coulombic efficiency and capacity degradation of commercial lithium-ion batteries - ScienceDirect

bro67 said:

BU-808b: What Causes Li-ion to Die? Battery University

I liked the first article but it really has nothing to do with the purpose of this thread, IMHO.

BTW, we have similar backgrounds, lol.