Cylindrical 21700 Cell
Univercell HE60
Cylindrical 21700 cell delivering 6 Ah capacity with 329 Wh/kg energy density and 36 A maximum discharge rate.
Overview
The Univercell 21700HE60 is a lithium-ion cylindrical 21700 cell designed for applications that demand reliable performance across a broad range of load conditions. Released in 2026 and with the manufacturer based in Germany, this cylindrical 21700 cell delivers 6 Ah capacity and 20.7 Wh of energy at a nominal voltage of 3.45 V, with a maximum continuous discharge capability of 36 A, making it suitable for applications that balance runtime against peak power demand. Among the 21700 cylindrical cells in the About:Energy battery library, the Univercell HE60 ranks 3rd of 97 for gravimetric energy density. Its 329 Wh/kg compares with a 21700 cylindrical median of 257 Wh/kg.
Key Features
Discharge rate: 36 A continuous (6.0 C)
Energy density: 329 Wh/kg
Power density: 1,971 W/kg
Cathode: Ni-based
Applications: drones, aviation, e-mobility
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Univercell
Model
21700HE60
Type
Li-ion
Form factor
Cylindrical 21700
Country of origin
Germany
Release year
2026
Nominal voltage
3.45
Energy capacity [Wh]
20.7
Capacity [Ah]
6
Gravimetric energy density [Wh/kg]
329
Gravimetric power density [W/kg]
1971
Max continuous discharge [A]
36
Volume [cm³]
24.3145
Mass [g]
63
Positive electrode (cathode)
Ni-based
Negative electrode (anode)
Graphite/Si additive
Value
Applications & Use‑Cases
The Univercell HE60 is well suited to the following applications due to its cylindrical 21700 form factor and balanced performance.
Drones: Demands high gravimetric power density for thrust and payload capacity, rapid current response for flight control, and stable voltage delivery across dynamic flight profiles.
Aviation: Requires high specific energy for extended flight duration, high power-to-weight ratio for climb performance, and reliable operation across wide temperature ranges at altitude.
E-Mobility: Requires balanced energy and power density for range and acceleration, high cycle life for daily use, and robust calendar life to ensure long-term reliability.
General Applications: Suitable for applications requiring reliable lithium-ion performance with proven cycle life, consistent capacity delivery, and operational safety across diverse use cases.
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Performance & Model Data
Below are modelled performance metrics for the Univercell HE60 across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access Univercell HE60 constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not HE60 data.)
Constant Current Temperature
Access Univercell HE60 thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not HE60 data.)
Pulse Power Behaviour
Access Univercell HE60 pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not HE60 data.)
Dynamic Profile Response
Access Univercell HE60 mission profile simulations in Voltt to prove the pack holds up over a real duty cycle before you build it. (Chart shown is illustrative, not HE60 data.)
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Case Studies
See how we helped McMurtry reduce cell evaluation time by 70% through data driven testing and modelling.
Motorsports
McMurtry Automotive: Faster cell evaluation
McMurtry Automotive used The Voltt and validated cell models to evaluate the transition from the Molicel P45B to P50B during early pack concept development.
Side by side modelling enabled rapid comparison of electrical and thermal behaviour, avoiding lengthy physical test campaigns. This approach reduced cell evaluation time by seven months, allowing the team to lock in cell selection and pack assumptions earlier while lowering technical risk and accelerating vehicle development.
Comparison with Related Cells
Compare the Univercell HE60 with similar Cylindrical 21700 cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
Univercell
UniverCell is a German cylindrical lithium-ion cell manufacturer
UniverCell was founded in 2019 in Kiel, Germany, and manufactures cylindrical 21700 lithium-ion cells at its plant in Flintbek, alongside custom electrodes supplied to other developers. The cells use a tabless design and lightweight aluminium housings, with nickel-based cathodes and silicon-bearing anodes for high energy density. Anodes and cathodes are produced in house using an industrial dry-coating process, which removes solvent handling from electrode manufacture and shortens changeover between customer-specific builds. The company serves space and satellite systems, critical care medical devices and other specialist applications with demanding qualification requirements. UniverCell is one of the few European manufacturers offering both custom electrodes and finished cells.
Frequently Asked Questions
What is the capacity and voltage of the Univercell HE60?
The Univercell HE60 has a nominal capacity of 6 Ah and a nominal voltage of 3.45 V, providing 20.7 Wh of energy per cell.
What is the maximum continuous discharge capability of the Univercell HE60?
The Univercell HE60 supports continuous discharge rates up to 36 A, delivering a power density of 1,971 W/kg.
How much does the Univercell HE60 weigh and what is its volume?
The cell has a mass of 63 g and a volume of 24.3 cm³.
In which industries is the Univercell HE60 commonly used?
The Univercell HE60 is used across drones, aviation and e-mobility, applications that demand reliable performance and balanced energy and power.
How does the Univercell HE60 compare with the BAK 60D?
Comparing the Univercell HE60 with the BAK 60D: capacity 6 Ah against 6 Ah; maximum continuous discharge 36 A against 35 A. Both datasheets can be compared side by side in The Voltt.
What chemistry and format is the Univercell HE60?
The Univercell HE60 is a cylindrical 21700 cell with a Ni-based cathode and a Graphite/Si additive anode. It has a nominal voltage of 3.45 V and a volume of 24.3 cm³. Its full datasheet is free to view in The Voltt.
