11.1v charger schematic
i have similar problem- I am trying to use thre cells salvaged from old fones. Two of the cels match and anorther which I have chosen for my 3 cell pack does not. I want to wire the three packs up after cutting out the Vreg and whatever else circuits which are currently on the cells themselves. I have been checing out various charging IC's- TI has some promising ones, Maxim too. Finding one whch is capable of multi-cell chraging is not a huge deal but fining a package which can be easily worked with can be harder. TI does offer some of their devices in CIP package but Maxim not so much. I believe that the BQ2000 looks promising (TI).
Anyways, I am wondering what sorts of charging and matching issues I have to look forward to with designing this interface/charging circuit? Will I be able to use the three cells even though at least one isn't mathing? are there other things which I have to keep in mind>? Haven't yet worked with these types of cells yet so am in newbie territory!
Thanks in advance for any help with these issues, regards, jd