CELLS FORDRONE & eVTOL

Fly Longer. Perform Stronger.

Tenpower Tabless Cell Unlocking the High-Power Potential of Cylindrical Cells

Advances in cell chemistry and structural design are making cylindrical cells increasingly viable for drones and eVTOLs. Tenpower’s high-nickel cathodes and silicon-based anodes increase energy density for longer flight, while its full-tabless architecture reduces internal resistance, enabling higher-rate performance and improved thermal management.

Together, these innovations are overcoming the traditional limitations of cylindrical cells in aerial applications. Tenpower is driving this evolution with advanced chemistry and full-tabless technology, delivering high-performance cylindrical cells for the next generation of aerial mobility.

High Discharge Rates

Tenpower’s high-performance cylindrical cells deliver high-rate pulse discharge performance and high-rate discharge capability, enabling rapid maneuvering and responsive power delivery in demanding flight conditions while supporting greater payload capacity.

High Energy Density

Tenpower’s advanced high-nickel cathode and silicon-containing anode technologies deliver higher energy density, enabling longer flight times and greater payload capacity within the same weight constraints.

Safety / Certification

Cylindrical cells combine robust metal casings for enhanced impact and vibration resistance with an independent cell architecture that helps isolate faults and limit risk propagation, providing reliable safety for high-power drone flight. Product hold key international safety and transport certifications, including UN38.3, UL1642, IEC 62133, RoHS, and REACH.

Wide Operating Temperature

Advances in chemistry and material technologies deliver outstanding wide-temperature performance, while the full-tab design further enhances power output and operational stability under extreme temperatures through lower internal resistance and reduced heat generation.

Choosing the right
battery cells
for your
Drone & eVTOL

General
Purpose

21700 5.0Ah

Tenpower
Solution

INR21700-50XG

Tenpower
Solution

INR21700-60XG

Tenpower
Next-Gen Solution

INR21700-70XG


Form Factor 21700 21700 Tabless 21700 Tabless 21700 Tabless
Chemistries NCA NCA NCA NCM
Typical Capacity 5.0Ah 5.0Ah 6.0Ah 7.0Ah
Nominal Voltage 3.6V 3.6V 3.6V 3.6V
 

Discharge Current 35A 60A 60A 35A
Pulse Discharge Current 60A 150A 160A 100A
Energy Density 265Wh/kg 265Wh/kg 300Wh/kg 345Wh/kg
 
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APPLIED BATTERY MODEL
Drones
eVTOL
Model Typical Capacity (Ah) Cathode Material Anode Material Nominal Voltage (V) Approx. Weight (g) Diameter (mm) Continuous Max Discharge Current (A) Acquire Datasheet
INR21700-40XG 4.0 NCA Gr,SiO 3.6 70 Φ21 60
INR21700-50SG 5.0 NCM Gr,SiO 3.6 70 Φ21 35
INR21700-50XG 5.0 NCA Gr,SiO 3.6 70 Φ21 50
INR21700-60XG 6.0 NCA Gr,SiC 3.6 73 Φ21 50
INR21700-70XG 7.0 NCM Gr,SiO 3.6 75 Φ21 35
INR21700-40XG 4.0 NCA Gr,SiO 3.6 70 Φ21 60
INR21700-50SG 5.0 NCM Gr,SiO 3.6 70 Φ21 35
INR21700-50XG 5.0 NCA Gr,SiO 3.6 70 Φ21 50
INR21700-60XG 6.0 NCA Gr,SiC 3.6 73 Φ21 50
INR21700-70XG 7.0 NCM Gr,SiO 3.6 75 Φ21 35

TECHNICAL ARTICLES

Tenpower Expands Global Manufacturing Footprint with 5GWh Cylindrical Battery Project in Indonesia


Following the launch of Tenpower’s Malaysia manufacturing base in 2025, the future Indonesia facility will work together with the Malaysia site to create a coordinated overseas manufacturing network.

Tenpower Expands Global Manufacturing Footprint with 5GWh Cylindrical Battery Project in Indonesia
Full Article

Tenpower Showcases High-Performance 7.0Ah Battery Cell


At The Battery Show Europe 2026, Tenpower showcased its portfolio of high-performance Tabless cylindrical lithium battery cells, presenting solutions for power tools, light mobility, intelligent robotics, low-altitude aviation, and AI data center backup power (BBU) applications.

Tenpower Showcases High-Performance 7.0Ah Battery Cell
Full Article

Tenpower Launches Next-Generation BBU Battery Cells for AI Data Centers


March 25, 2026, Florida, USA — At the International Battery Seminar & Exhibition (IBSE 2026), Tenpower officially introduced its next-generation 21700 cylindrical battery cells for Backup Battery Unit (BBU) applications.

Tenpower Launches Next-Generation BBU Battery Cells for AI Data Centers
Full Article

QUESTIONS? ANSWERS.

What makes cylindrical lithium-ion cells ideal for UAVs and eVTOL aircraft?

Cylindrical lithium-ion cells (such as 18650 and 21700 formats) offer a balanced combination of high energy density, mechanical rigidity, and automated production consistency. Unlike pouch cells, cylindrical steel/aluminum casings provide higher internal pressure tolerance and robust resistance against mechanical impact or vibration during high-altitude flight. Their standardized form factor also simplifies thermal management integration and structural battery pack design for commercial drones, logistics UAVs, and passenger eVTOLs.

How does Tenpower address high-rate discharge and thermal challenges in eVTOL takeoff and hover phases?

Takeoff and hovering demand immense continuous and pulse discharge rates (often 10C–15C+). Tenpower leverages advanced tabless cell architecture and low-impedance electrode formulations, which drastically lower internal resistance (DCR) and minimize Joule heating. This design enables high burst power output, maintains stable operating temperatures under heavy continuous loads, and significantly mitigates thermal management overhead in multi-rotor and tilt-rotor eVTOL applications.

What cell formats are recommended for commercial drones vs. urban air mobility (UAM)?

Industrial & Specialty UAVs (Power & Peak Pulse-Driven):

Due to the limited number of cells in the pack, the aircraft imposes extreme demands on continuous and peak pulse discharge capabilities. Therefore, ultra-high-rate, ultra-low internal resistance cell specifications (such as high-rate tabless cylindrical or pouch cells) are the preferred choice for tactical, inspection, and high-mobility drones—ensuring instant power bursts, superior wind resistance, and reliable maneuverability under peak loads.

Urban Air Mobility & Transport Aircraft (UAM/eVTOL, Balanced Density & Cost):

Commercial transport aircraft prioritize the optimal balance between flight range, payload capacity, and operating costs. Beyond delivering necessary take-off/landing power, high-capacity, medium-to-high discharge cells (such as high-density 21700 or large cylindrical cells) are widely deployed. This approach ensures robust peak power while maximizing cruising range and lowering total lifecycle battery costs.

How do Tenpower cells perform under extreme operating temperatures and high-altitude conditions?

High-altitude flight and winter operations often expose batteries to sub-zero environments, which cause voltage drop and capacity loss. Tenpower’s tailored low-temperature electrolytes and surface-modified cathode materials ensure reliable discharge down to -20°C to 0°C with reduced capacity fade, while maintaining high thermal stability and cycle life in hot operating environments.

What safety certifications and compliance standards do Tenpower cells meet for aerospace and UAV integration?

Tenpower cells are manufactured under stringent quality management systems. Our product lines hold key international safety and transport certifications, including UN38.3, UL1642, IEC 62133, RoHS, and REACH, ensuring full compliance and frictionless integration for global UAV OEMs and aerospace supply chains.

How do Tenpower battery cells help extend the flight time and range of heavy-payload logistics drones?

Flight endurance in cargo and delivery drones directly depends on the usable gravimetric energy density (Wh/kg) under sustained discharge. Tenpower’s high-capacity 21700 cell series features advanced high-nickel cathodes and silicon-doped anodes, delivering industry-leading energy density while maintaining a flat discharge voltage curve. This enables logistics drones to carry heavier payloads over longer distances without premature low-voltage cutoffs.

Can cylindrical cells achieve the high C-rates required for FPV racing and dynamic tactical UAVs compared to LiPo pouches?

Yes. While traditional LiPo pouch batteries degrade quickly and pose puncture risks, modern high-drain cylindrical cells (especially tabless 18650 and 21700 models) deliver continuous discharge rates of 40A–60A+ and burst pulse capabilities exceeding 100A+. They provide equivalent throttle responsiveness and dynamic power output with significantly higher cycle life, better mechanical durability, and lower degradation rates over repeated high-stress flights.

 

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