SolarWing's High-Temperature Lithium Batteries utilize an advanced Battery Management System (BMS) for precise State of Charge (SoC) estimation. This involves a hybrid approach, combining Coulomb counting for real-time current integration with periodic Open Circuit Voltage (OCV) measurements and robust temperature compensation. Our proprietary algorithms incorporate Kalman filtering and extensive cell characterization data, gathered across diverse temperature and discharge profiles relevant to aerospace. This adaptive methodology accounts for cell degradation over life and environmental fluctuations, ensuring highly accurate SoC prediction critical for mission planning, power budgeting, and preventing deep discharge in dynamic orbital conditions.

For long-duration space missions, SolarWing's high-temperature lithium batteries offer superior cycle life and extended operational longevity compared to silver-zinc (Ag-Zn) batteries. While Ag-Zn excels in high peak power delivery and specific energy for short-duration or primary applications, its cycle life is significantly limited, and it has a shorter wet shelf life. Our advanced lithium solutions provide stable voltage discharge, maintain performance across numerous charge-discharge cycles, and are designed for sustained reliability in demanding thermal environments, making them ideal for spacecraft requiring years of continuous power.

SolarWing's extensive flight heritage for high-temperature lithium batteries significantly mitigates mission risk by providing proven reliability in actual space environments. This heritage means our batteries have successfully operated across diverse orbital conditions, validating their design and performance against radiation, thermal cycling, and vacuum. Real-world operational data confirms their robustness and longevity, reducing the need for extensive new qualification testing. This track record offers unparalleled confidence to customers, streamlining integration, accelerating mission timelines, and ultimately enhancing the probability of mission success without unexpected power system failures.

SolarWing employs a combination of passive and active thermal management strategies to ensure our high-temperature lithium batteries operate within their optimal range in space. Passive methods include multi-layer insulation (MLI) blankets to minimize heat loss or gain, and highly conductive thermal paths to connect battery cells to dedicated radiator surfaces for efficient heat rejection. For active control, the Battery Management System (BMS) intelligently controls embedded heaters to warm the battery during cold eclipse periods. During peak charge/discharge or hot phases, the BMS manages power flow, collaborating with the passive radiator design to dissipate excess thermal energy into the vacuum of space.

SolarWing's High-Temperature Lithium Batteries provide significant benefits compared to traditional nickel-hydrogen (Ni-H2) batteries in aerospace. They boast superior gravimetric and volumetric energy density, enabling more compact and lighter spacecraft designs. These Li-ion cells deliver higher specific power and improved charge/discharge efficiency, resulting in less waste heat generation. This enhanced efficiency, coupled with stable performance at elevated temperatures, simplifies thermal management. Furthermore, our batteries typically offer a longer cycle life and lower self-discharge rates, contributing to extended mission durations and higher overall system reliability over legacy Ni-H2 options.