[12][14] That year, the Deals began demoing songs for the band's next album,[12][15] including "Regalame Esta Noche" and "No Way".

[18] Around this time, Kim and Kelley moved from Los Angeles back to their hometown of Dayton, Ohio,[14] and continued working on new compositions there,[19] including "Bang On" and "Night of Joy", which came about in the spring of 2007.

[22] By this time, Presley had left the group to sell luxury cars,[21] so the Breeders consisted of the Deal twins, Lopez, and Medeles.

[21][22] Mountain Battles takes on "primitive" art punk amidst a "raw, sparse" lo-fi sound.

[9][23] All tracks are written by Kim Deal, except where notedThe Japanese release contains the following bonus track:[22] The Mountain Battles liner notes list the following personnel who helped make the album; the liner notes do not mention which instruments the Deal sisters, Lopez, and Medeles played.