Eliminating the positive active-material shedding identified as a major failure mode across battery chemistries. 
AGY's S2 Glass fibre is being used by Terra Supreme Battery (TSB), headquartered in Albion, Indiana, in the composite grids incorporated into the new Group 31 bipolar lead-acid battery.
The battery combines pure lead with high-strength S2 Glass fibre layers to create dimensionally stable composite grids. The glass fibre reinforcement is ten times stronger than steel by weight, helping to maintain the structural integrity of the battery's internal grid system throughout repeated charging and discharging cycles.
The reinforced composite-grid technology eliminates positive active-material shedding, which Terra Supreme says is a major failure mode across lead-acid battery chemistries. Dimensionally stabilising positive active material by maintaining original glass-reinforced grid geometry throughout service life improves battery durability, cycle life and long-term performance.

"S2 Glass fibre was developed for applications where exceptional strength, durability and dimensional stability are essential," said Patrick Hunter, CCO and president of AGY. "Terra Supreme's 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."
Terra Supreme's battery uses a bipolar architecture with horizontally oriented plates, an efficient internal current path and no conventional internal busbars. The battery is designed as a direct replacement that can operate without changes to an existing charging system.
Our objective was to rethink the lead-acid battery from the inside out," said Benny E. Jay, TSB CTO. AGY's S2 Glass fibre provides the strength and dimensional stability required for our proprietary composite grids. This enables us to structurally secure the active material, extend service life and deliver significantly improved performance from a familiar, recyclable battery chemistry."
Terra Supreme reports that its Group 31 battery provides 1,200 cold-cranking amps, 1,800 marine-cranking amps, 3,000 pulse hot-cranking amps, 240 minutes of reserve capacity and up to 4,000 cycles at 60% depth of discharge,
It has an integrated Bluetooth-enabled battery monitoring system and a five-year limited replacement warranty.
The battery is designed for high-power engine-starting and deep-cycle applications across commercial transportation, emergency services, industrial equipment, agriculture, aerospace, military, marine, recreational vehicle, railroad and both off-grid and grid-tied energy-storage markets.




 

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