Koen VG lithium ion charger question

Koen VG,
could you email me the instructions for making a charger? please do, me email is in my profile. if it works i will have four packs!

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Thx.
Antyoo

Antyoo
This is the charger I've been using for about 2 months on my Cellular phone Li-ion 3-cell pack.
You could use just one channel with the voltage set to 12.3 or 12.6 Volts (depending on the spec of the cells) and a higher voltage transformer, but I wanted to be sure that the max voltage for each cell was not exceeded. The charging current can be increased by reducing the 4.7 ohm resistors. 4.7 ohm gives 120 mA, I'm now using 1.8 ohm which charges my 650 mAh Li-ions in about 2.5 hours.
Alan.

[This message has been edited by R22 (edited 04-24-2001).]

R22 the pic did no work can u email it to me

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Thx.
Antyoo

Antyoo here it is
Not quite sure what the story is with embedded images. It was working ok at home after I posted it, but didn't work on my PC at work.

[This message has been edited by R22 (edited 04-24-2001).]

[TAW]

Alan,

That doesn't work either!!!

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Tim G-TAW

Have a look at My Pic Pics Page

Antyoo ,

the answer is in your email

regards

It works for me. Sorry Tim

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Robert Lee

Carbon fibre Piccolo blades - http://uk.geocities.com/robert_lee_uk_2000/

[TAW]

Strange!!!

It works now.

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Tim G-TAW

Have a look at My Pic Pics Page

Could someone please explain the circuit diagram a bit... for example, where do the batteries attach? Could I charge 2-cell Li-ion packs with this charger?
Finally, is it safe to use 3-cell Li-ion packs with the piccoboard? Each cell is giving over 4 volts fully charged -> a 3 cell pack gives more than 12V fully charged. Isn't this too high?
Thanks
-Nicolas

Dilznic:

Don't worry about the piccoboard. If you see the graphs I've posted on my site you'll see the current and tension of a Li-Ion battery pack.

About the circuit. You can see the battery symbols on the circuit. That's where you should charge/place your cells. On a first look at the circuit I believe you can charge one cell, 2 cells or even 3 cells.



[This message has been edited by luis_vale (edited 04-25-2001).]