Cylindrical 21700 High-Power Cell
Reliance RH60
Cylindrical 21700 cell delivering 6 Ah capacity and 20 A maximum discharge rate.
Overview
The Reliance RH60 is a lithium-ion cylindrical 21700 cell designed for applications that demand reliable performance and consistent capacity delivery. Released in 2026 and with the manufacturer based in China, this cylindrical 21700 cell delivers 6 Ah capacity and 21.6 Wh of energy at a nominal voltage of 3.6 V, with a maximum continuous discharge capability of 20 A, making it well suited to energy-focused applications requiring extended runtime. Among the 21700 cylindrical cells in the About:Energy battery library, the Reliance RH60 ranks 7th of 97 for gravimetric energy density. Its 304 Wh/kg compares with a 21700 cylindrical median of 257 Wh/kg.
Key Features
High discharge rate: 20 A continuous (3.3 C)
Applications: aviation, motorsports, e-mobility
Technical Specifications from the Manufacturer
Parameter
Manufacturer
Reliance
Model
INR21700-RH60
Type
Li-ion
Form factor
Cylindrical 21700
Country of origin
China
Release year
2026
Nominal voltage
3.6
Energy capacity [Wh]
21.6
Capacity [Ah]
6
Gravimetric energy density [Wh/kg]
304
Gravimetric power density [W/kg]
1014
Max continuous discharge [A]
20
Volume [cm³]
25.9803
Mass [g]
71
Positive electrode (cathode)
Negative electrode (anode)
Value
Applications & Use‑Cases
The Reliance RH60 is well suited to the following applications due to its cylindrical 21700 form factor and high power performance.
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.
Motorsports: Demands sustained high discharge under competitive load profiles, rapid transient response for acceleration, and thermal stability to maintain performance during race conditions.
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 Reliance RH60 across key indicators, including constant current behaviour, rate capability, temperature dependence, and available power under representative drive cycle conditions.
Constant Current Voltage
Access Reliance RH60 constant-current discharge curves in Voltt to size your pack against the voltage window your system actually needs. (Chart shown is illustrative, not RH60 data.)
Constant Current Temperature
Access Reliance RH60 thermal discharge data in Voltt to specify cooling and cell spacing before you commit to a pack layout. (Chart shown is illustrative, not RH60 data.)
Pulse Power Behaviour
Access Reliance RH60 pulse power maps in Voltt to set peak current limits and parallel count for your worst-case load. (Chart shown is illustrative, not RH60 data.)
Dynamic Profile Response
Access Reliance RH60 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 RH60 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 Reliance RH60 with similar Cylindrical 21700 cells offering comparable capacity and performance characteristics.
Model
Capacity
Max Discharge
Typical Use
Access Cell Data
Manufacturer Background
Reliance
Reliance is a Chinese manufacturer of high-power cylindrical lithium-ion cells
Reliance is a Chinese cell manufacturer producing cylindrical lithium-ion cells in the 21700 format, built on a tabless electrode architecture that lowers internal resistance and improves heat rejection under sustained load. Its RS and RP model codes denote the high-rate and high-capacity lines, with the trailing figure indicating rated capacity. The cells are aimed at electric bicycles and light electric vehicles, karting and motorsport, power tools and other applications where continuous discharge rather than pack energy sets the requirement. The company entered the market recently and competes directly with the established high-power cylindrical suppliers. Its relevance lies in bringing tabless construction to a competitive price point.
Frequently Asked Questions
What is the capacity and voltage of the Reliance RH60?
The Reliance RH60 has a nominal capacity of 6 Ah and a nominal voltage of 3.6 V, providing 21.6 Wh of energy per cell.
What is the maximum continuous discharge capability of the Reliance RH60?
The Reliance RH60 supports continuous discharge rates up to 20 A.
How much does the Reliance RH60 weigh and what is its volume?
Physical dimensions are not specified for this cell.
In which industries is the Reliance RH60 commonly used?
The Reliance RH60 is used across aviation, motorsports, e-mobility, applications that demand high power delivery and reliable performance across demanding duty cycles.
How does the Reliance RH60 compare with the BAK 65E?
Comparing the Reliance RH60 with the BAK 65E: capacity 6 Ah against 6.35 Ah; maximum continuous discharge 20 A against 25.4 A; energy density 304 Wh/kg against 296 Wh/kg; mass 71 g against 75 g. Both datasheets can be compared side by side in The Voltt.
What chemistry and format is the Reliance RH60?
The Reliance RH60 is a cylindrical 21700 cell. It has a nominal voltage of 3.6 V and a volume of 26 cm³. Its full datasheet is free to view in The Voltt.
