Speciality materials manufacturer AGY’s S2 Glass fibre is being used to reinforce the composite grids in Terra Supreme Battery’s new Group 31 bipolar lead-acid batteries. Terra Supreme’s innovative use of S2 Glass demonstrates how advanced glass-fibre reinforcement can help transform a well-established battery chemistry and address one of its most persistent performance limitations.” Benny E. Jay, chief technology officer of Terra Supreme Battery, said: “Our objective was to rethink the lead-acid battery from the inside out.