Boeing has placed an order with GS Yuasa Lithium Power for LSE190 lithium-ion cells, which will be used to power two ViaSat-3 geostationary communications satellites.
Each satellite will provide one terabit per second of throughput. The LSE190 cell is specifically engineered to support these kinds of high-power duty cycles, and to achieve a 15-year mission life.
The 3.7 V LSE190 cells use a lithium cobalt dioxide cathode and carbon anode. Nameplate capacity is 190 Ah, and specific energy is 165 Wh/kg.
GS Yuasa has been making lithium-ion cells for use on spacecraft since 1998 – its lithium-ion cells are currently in use on more than 120 satellites.