This paper seeks to consolidate the experiences gained from a group of projects carried out by the Advanced Lead-Acid Battery Consortium (ALABC) and aimed at achieving increases in the specific energy and the specific power of lead-acid batteries by developing grid designs of low weight. The use of corrosion-resistant alloys allows significant reductions in weight, but if this approach is taken too far problems arise with obtaining good adhesion of the active material to the grid. Some success has been achieved in the production of cells with improved specific energy and long life.