Raysun Battery focuses on engineering, certifying and mass-producing custom lithium battery packs for UGV, UAV, FPV, industrial, medical, robotics, energy storage and other demanding applications across the globe.

Our in-house engineers bring 8+ years of specialized experience in lithium battery pack design, BMS customization and manufacturing quality control. With deep expertise across LFP, Li-polymer and lithium-ion chemistries, we translate each client's unique requirements — from voltage, capacity and form factor to extreme environmental tolerance — into fully validated, production-ready battery solutions.

We operate alongside our domestic manufacturing facility founded in 2018, equipped with automated assembly lines and precision testing instruments to enforce strict multi-stage quality control. This setup supports a stable annual delivery capacity of 50 MWh, covering both small-batch custom prototypes and medium-volume mass production.

To date, our production facility has successfully delivered over 100 custom battery projects for clients worldwide. All mass-produced products comply with international safety and performance standards including CE, UL, IEC 62133 and UN38.3.

Unlike large-scale factories that prioritize standardized high-volume orders, we adopt a customer-first approach to every project. We offer direct one-on-one technical support from our engineers, a 5-business-day response guarantee, and flexible production arrangements to accommodate custom needs of all sizes.