Hi,
All we could do is an internet research...the only useful information we have is "10S" or "20S".
So it's a rather unelaborated question.
So my expectation is that people spend their time to recommend various ICs.
But most of them will not fit your requirements like
* chemistry
* current
* temperature range
* features
* price
* availability
* package (size, pin count, solderability...)
...
So better decide your requirements first..
Then do an internet search at
* distributors (to get an overview and get manufacturer names)
* IC manufacturers (for more detailed informations, datasheets, application notes..)
Then, if there still are problems, you are able to give full specifications and detailed questions ...and get back fast and focussed response.
Klaus