Li-Ion charger AC-DC

Thread Starter

david1234

Joined Nov 27, 2013
86
Hello ,
I want to build a LI-Ion charger for my battery
my battery is 11.1V (nominally) , 2000mAh
max charger 12.8V

I want to build a 220AC-12.8DC charger ,
also I will create my own design of the circuit (i have some size issues )
can someone help me with this?

Thanks ,
 

Thread Starter

david1234

Joined Nov 27, 2013
86
o.k.
Let say I use the ISL9220
did you ever work with it? easy to apply?

also I want to see I understand it
Ieoc(end of charge)? - the I of the battery ? 2000mA in my case?
Iin(how much mA does it give to the battery)? 1-1.2A in my case?
but where do I set the voltage?
didn't see it on the datasheet
 

Thread Starter

david1234

Joined Nov 27, 2013
86
also
I have found this circuit (using the LM317)
http://www.electronicshub.org/automatic-battery-charger-circuit/

it's seem nicer and easier

I will probably use this on (it's ready )
but I have some questions(changes for me):
how can I change it to disconnect when the Vbat is 12V (and not 13.5)?
also is there any why to limit the current?

and the most impotent question - is it good for Li-Ion ?

Thanks ,
 
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