What’s the best way to charge a Lithium-ION battery cell?

I searched around on the Internet for some info about what I need to know, and so far, no such luck, so here goes:
I have a dead Laptop Li-ION battery pack in my possession, and i decided to tear it apart to find out how it works. Much to my suprise, 2 of the 9 cells in the battery pack had some charge left in them, so I destroyed the casing, and circuitry to get the cells out. I did some preliminary research online and found out that lithium is (obviously) very dangerous, even in battery form. Improper charging can cause damage to the cell (best case) to even a thermal runaway reaction leading to an explosion (worst case). Aside from that, lithium is very toxic, so needless to say, very dangerous stuff to play around with.
Which leads me to my question: How should I go about charging these cells to get some use out of them? Or is it just too risky to try? If I should just get rid of them, how should I go about this?
Obviously, I can’t dump these in the land fill, or can I?

Quick: What’s the difference between a “lithium ion” battery for your mac laptop and a regular one?

What’s the difference between a “lithium ion” “energy plus” battery for your mac laptop and a regular one?

(There’s a huge price difference, so I’m wondering….)

My laptop battery died and now it won’t start with the power cord. What’s wrong?

The battery on my Dell Inspiron laptop died a couple of months ago even though I’ve only had the laptop a little over a year. Someone told me it was because I didn’t condition the battery properly. Anyway I didn’t have money at the time to buy a new battery so I continued running it off the power cord.

Now all of a sudden the laptop won’t start or boot up at all. When I press the power button all the lights come on for 2 seconds and then they switch off leaving only the power light and blue-bluetooth light on. And nothing, no screen activity, fans, nothing.

I tried taking out the battery and booting on the power cord alone but the same thing happens.

Does anyone have any idea what could be causing this?

Whats the best way to store a lithium-ion laptop battery?

I have an Acer Extensa laptop with a Lithium Ion battery (model number TM00741) should it be charged fully, or discharged completely. I have even heard to store it at about 40% capacity. I wont be using that much as I will be using d/c power mostly, also I dropped it once will that affect the life of it? Thanks 10 points to best (and supported) answer

  

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