May 16th, 2025 – On Day 2 of CIBF2025 in Shenzhen, Jiangsu Reliance Energy Tech captivated the industry with a groundbreaking tech showcase. The global launch event, themed “Tabless Uncharted, Power Unbound,” unveiled the revolutionary 21700-6.0Ah tabless large cylindrical battery cell. This epoch-making product shattered industry limits with an energy density exceeding 300Wh/kg. The venue was filled to capacity, with representatives from leading clients, technical experts, industry pioneers, and media witnessing this milestone moment.
The newly launched INR21700-RH60 and RS60 models feature industry-leading tabless design, which drastically reduces internal resistance through innovative structural optimization. This significantly enhances energy density and cycle life. Coupled with an ultra-high-nickel NMC90 cathode + silicon-carbon composite anode system, energy density surpasses 300Wh/kg. Key advantages include:
Ultra-long range, High-rate discharge capability, Stable performance throughout full lifecycle.
Widely applicable to: E-bikes, Power tools, Garden tools, Home appliances, Portable energy storage, Robotics, eVtol, Construction machinery.
Ultra-High Rate Performance
INR21700-RH60: ≥20A continuous discharge; ≥15C pulse discharge (seconds), meet the demands of high energy density applications
INR21700-RS60: ≥50A continuous discharge; ≥30C pulse discharge (seconds), serve the rigorous requirements of scenarios requiring both high energy density and high power density
Ultra-High Energy Density
Energy Density＞300Wh/kg
“Our ultra-high-nickel NMC90 cathode + silicon-carbon composite anode high-energy-density system delivers continuous, stable, high-power output – sprinting at marathon distances.”
Ultra-Wide Temperature Range
-40°C to 80°C, Reliable performance in extreme environments
Through balanced system design, the battery supports: Charging: -20°C to 60°C, Discharging: -40°C to 80°C, This expanded thermal tolerance broadens application possibilities – “Wherever needed, we deliver.”
Ultra-Long Cycle Life
INR21700-RH60:
25℃，1C charge/2C discharge @100% SOC: ≥80% capacity after 1,000 cycles
25℃，1C charge/2C discharge @90% SOC: ≥80% capacity after 1,500 cycles
INR21700-RS60:
25℃，2.5C charge/5C discharge @100% SOC: ≥80% capacity after 600 cycles
25℃，2.5C charge/5C discharge @90% SOC: ≥80% capacity after 1,000 cycles
Optimized interface design and lower temperature rise enable thousands of cycles.
Ultra-High Consistency
Full-process CPK >1.33，Key-process CPK >1.67
Robust structural design and precision manufacturing ensure stable performance in extreme conditions (high vibration, temperature fluctuations, high-rate scenarios), guaranteeing safety throughout the lifecycle.
During the keynote at the launch event, Chen Xuan, Founder & Chairwoman of Reliance Energy Tech, emphasized:
“Tabless technology breaks physical constraints of traditional batteries, redefining possibilities with ‘performance without boundaries.’ RH60 and RS60 will empower clients to achieve dual leaps in efficiency and safety across new energy applications.”
Jiangsu Reliance Energy Tech consistently dedicates itself to the R&D and manufacturing of high energy density, high-rate, long-life tabless large cylindrical batteries. The successful launch of these new products demonstrates the company’s profound expertise in material innovation, process optimization, and application-specific solutions. Moving forward, Reliance will continue advancing new energy technologies, driving global energy transition through more efficient and reliable power solutions.
Post-event, Reliance Energy Tech and Carl Zeiss (Shanghai) Management Co., Ltd. signed a strategic agreement to co-establish a Battery Quality Innovation Lab. Leveraging Zeiss’ century-long expertise in precision measurement and Reliance’s innovation in new energy, the partnership will drive deep technical synergy across R&D, production, and lifecycle quality control.
This collaboration not only establishes regularized cooperation mechanisms in areas such as inspection equipment procurement and joint talent development programs, but will also champion Chinese new energy industry quality standards in global markets through a joint branding initiative.
Moving forward, both parties will leverage technology symbiosis to accelerate industrial upgrading, injecting powerful impetus into high-quality development across the global new energy sector.
With the launch of the 21700-6.0Ah battery and the commencement of the Reliance-ZEISS strategic partnership, Reliance Energy Tech is accelerating its global expansion through a dual-engine strategy powered by ‘Technology + Quality’.
“300Wh/kg is not the destination, but the starting point of a new journey,”stated Chen Xuan. “We look forward to partnering with global innovators to accelerate the energy transition.”
