Finding a competent shop to
Finding a competent shop to service a hybrid battery is not easy, there are only a few. Replacing modules or "cells" is not a long term solution without very expensive equipment and knowledge to condition and balance the entire battery. An unbalanced battery will continue to kill cells and you will be in a vicious cycle of replacing cells. I highly recommend finding a competent hybrid battery rebuilder with the proper equipment and knowledge to rebuild batteries....a good rebuilt battery should be good for 5 years or 100k miles minimally.