Rincell debuts high-power RC50T drone battery at DroneX London

Rincell is introducing the RC50T, a tabless 21700 lithium-ion cell built for drones, at DroneX in London on Sept. 29-30, 2026. The cell is already shipping and aims to give drone makers more peak power with lower heat and faster turnaround between flights.

Why it matters: - Drone builders want more power for takeoff, climb, payload lift and fast maneuvers without giving up energy density. - Rincell is positioning the RC50T as a production-ready option that can go into drones and other high-power systems now. - The debut matters for UK and European buyers looking for a supply chain they can trust and a cell they can order today.

What happened: - Rincell will make its first public appearance in Europe at DroneX at ExCeL London on Sept. 29-30, 2026. - The company is unveiling the RC50T, an extreme-power, ultra-low-DCIR 21700 cell for drones. - The RC50T is NDAA compliant and is already ramping up production and shipping to customers. - Rincell will exhibit at stand U534, where the RC50T and RC50 will be on display alongside sample pack designs. - Jignesh Parikh, co-founder and CEO of Rincell, will be available for media briefings on both days. - Rincell is directing media requests to media@rincell.com. - High-resolution images of the RC50T cell and sample packs are available through the company’s announcement.

The details: - The RC50T delivers 100A continuous discharge and 150A pulse discharge from a standard 21700 cylindrical cell. - The cell has energy density above 265 Wh/kg. - Its tabless construction gives internal resistance of 3 to 4 mΩ. - The RC50T accepts charge at up to 15A. - The company says the low resistance means more stored energy reaches the motors as usable power instead of being lost as heat. - The RC50T is shipping to drone manufacturers and customers in other high-power applications. - The RC50T complements the RC50, a 5Ah 21700 cell already shipping in volume to drone manufacturers in defense, agricultural and surveillance applications, plus medical and mobility customers. - The RC50 offers around 276 Wh/kg, 5C continuous discharge, 10C pulse discharge and more than 1,000 cycles of life. - Rincell says the RC50 is the endurance and cycle-life option, while the RC50T is the peak-power option. - Both cells are available now. - Rincell was founded in January 2023. - The company designs and manufactures silicon-graphite lithium-ion and sodium-ion cells for defense and commercial customers in drones, communications, aerospace, medical, industrial and data center markets. - Rincell says hundreds of thousands of cells shipped in 2026. - Rincell operates a 6,500-square-foot battery cell pilot line in Fremont, California, where it produces smaller quantities for customers. - Volume production is primarily in India. - A U.S. production facility is scheduled to come online in late 2027. - Rincell is venture-backed and supported by In-Q-Tel, the U.S. Department of War and the California Energy Commission.

Between the lines: - The launch pairs product specs with proof of production, which is a direct response to buyers that want less promise and more availability. - The RC50T and RC50 give pack designers two paths inside the same form factor: endurance or peak power. - Rincell is leaning on manufacturing readiness as much as battery performance to differentiate itself in a crowded drone supply market. - A U.S. production buildout remains a future milestone, while current volume manufacturing is centered in India.

What's next: - Rincell will show the RC50T and RC50 at DroneX on Sept. 29-30, 2026. - Parikh is expected to meet with media at the show. - Drone makers and other high-power customers can already order the cells now. - The company plans to bring its U.S. production facility online in late 2027.

The bottom line: - Rincell is using DroneX to prove the RC50T is not a concept battery. It is a shipping cell aimed at giving drone makers more power, less heat and a clearer path to production.