Difference between BQ2013H and BQ34Z110

Hi, 

I was wandering what was the best chip between the BQ2013H and the BQ34Z110 for lead acid battery use. I am working on UPS (un-interruptible power supplies) applications.

I get the feeling that the BQ34Z110 is an improved version of the BQ2013H, optimized for lead acid, but I could be wrong.

Hope someone can help me.

BQ2013H : http://www.ti.com/product/bq2013H#technicaldocuments

BQ34Z110 : http://www.ti.com/product/bq34z110