ManiaX Power Technology Co., Ltd. is one of the leading manufacturers and suppliers of reliance 21700 rs40 4000mah 70a battery in China. Welcome to buy the newest reliance 21700 rs40 4000mah 70a battery made in China here from our factory. Quality products and reasonable price are available.
Reliance INR21700 RS40 Li-ion cell 4000mAh 70A Tabless Design Battery
The Reliance RS40 is a powerful 21700 lithium-ion battery designed for high-drain applications that demand both strength and reliability.
With a 4000mAh nominal capacity and an impressive 70A continuous discharge rating, this flat top cell delivers outstanding performance in demanding environments. Its durable construction and consistent output make it a dependable choice for advanced power systems.
This Reliance RS40 Li-ion Cell Key Features
- Extended Runtime: 4000mAh capacity supports longer operating cycles.
- Exceptional Power Output: Up to 70A continuous discharge for demanding applications.
- Stable INR Chemistry: Designed for consistent balanced power and thermal reliability.
- Industrial-Grade Build: Reinforced steel shell with integrated safety features.
- System Integration Ready: Ideal for professionally engineered battery packs.
Technical Specifications
| Brand | Reliance / INR21700-RS40 |
| Voltage | 3.6V |
| Capacity | 4000mAh |
| Cont.Discharge current | 70A |
| Full charge voltage | 4.2V |
| Discharge cut-off voltage | 2.5V |
| Dimensions | H:L=21.55*70.3mm |
| Weight | about 65g |
| Operating Temperature | -20°C to 60°C (Discharge) / 0°C to 45°C (Charge) |
| Cycle life | ≥80% capacity after 500 cycles |
| Style | flat top |
Typical Highlights
Unparalleled Performance:
With a 4000mAh nominal capacity and up to 70A continuous discharge capability, the RS40 delivers an uncommon combination of sustained high output and extended runtime. Its stable chemistry and robust construction make it well suited for high-drain pack builds, e-mobility systems, and demanding power applications where both performance and reliability are critical.
Efficiency Redefined:
The Reliance RS40 is a next-generation 21700 lithium-ion cell built around a tabless electrode architecture, significantly reducing internal resistance and improving thermal performance under load. This design minimizes current bottlenecks inside the cell, resulting in lower voltage sag, more uniform heat distribution, and improved efficiency during high-current charge and discharge operation.
Built to Last:
Crafted with durability in mind, the Reliance 21700 RS40 battery cell is designed to withstand the rigors of daily use. Whether you're out in the field or tackling demanding projects, rest assured that this battery cell is up to the task, delivering reliable performance when you need it most.
Caution
- Don't use this battery in e-cigarettes, vaporizers, or similar devices.
- Don't mix old and new, or used and unused batteries.
- Don't short circuit, puncture, cut, crush, incinerate, or modify the battery.
- Don't use if the battery wrapper is torn or damaged in any way.
- Don't overcharge or over-discharge-this can lead to battery failure.
- Don't expose the battery to liquids, extreme heat, or direct sunlight.
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