Reliance RS50 70A Ultra High Power Full Tab / Tabless Lithium-ion Battery Cell for Drones, Power Tools, Cleaners & E-Mobility
Price:
$3.2
MOQ:
130
Delivery Time:
3-5 days
Brand:
Reliance
Product Description
INR21700 5000mAh 70A Ultra High Power Full Tab / Tabless Lithium-ion Battery Cell
The INR21700 5000mAh is a next-generation high power cylindrical lithium-ion cell designed to meet the extreme energy demands of modern industrial and commercial equipment. Engineered with state-of-the-art full tab (tabless) internal architecture, this cell boasts an ultra-low AC internal resistance (ACIR ≤ 4.0mΩ).
Technical Specifications
| Specification Parameter | Technical Value / Detail |
|---|---|
| Cell Model | RS50 INR21700 Series (5000mAh) |
| Nominal Voltage | 3.6V |
| Nominal Capacity | Typical ~5000mAh (Min. 4950mAh @ 0.2C) |
| AC Internal Impedance (ACIR) | ≤ 4.0 mΩ (@ 1kHz, typical ~3.0mΩ) |
| Charge Cut-off Voltage | 4.20V |
| Discharge Cut-off Voltage | 2.50V |
| Standard Charging Current | 2.5A (0.5C) |
| Max. Fast Charge Current | 15A (3C Fast Charge) |
| Max. Continuous Discharge | 70A (with 80°C surface thermal cut-off) |
| Cell Dimensions | Max. Diameter: 21.35mm / Max. Length: 70.30mm |
| Cell Weight | ≤ 67.0g |
| Operating Temperature | Charge: -20°C to 60°C / Discharge: -40°C to 80°C |
| Storage / Shipping SOC | 3.46V ~ 3.52V (~30% SOC) |
Key Performance Highlights
- Advanced Tabless / Full Tab Structure: Features cutting-edge full-tab construction that drops internal resistance to ≤ 4.0mΩ, vastly lowering operating temperatures under high-current loads.
- Extreme High-Drain Capacity: Effortlessly sustains continuous 40A currents with surface temperatures kept under 70°C, while capable of handling burst pulse discharges up to 90A.
- Unrivaled Low-Temperature Performance: At -20°C under 40A load, initial output voltage stays above 2.2V; at -40°C extreme cold, delivers steady 10A current with initial voltage exceeding 2.3V.
- Long Cycle Life Expectancy: Heavy-duty use retains ≥80% capacity at 500 cycles; deep cycle use delivers over 1000 cycles; standard use achieves 1500+ full charge/discharge cycles.
- Certified Safety Standards: Verified compliant with UN38.3, UL1642 crush tests (13kN), drop tests, high-voltage overcharge, 130°C thermal exposure, and short-circuit protection.
Primary Applications
- Industrial Drones & UAVs: Heavy-payload multirotors, agricultural spraying drones, aerial mapping UAVs, and high-discharge FPV platforms
- Professional Power Tools: High-torque drills, rotary hammers, circular saws, lawnmowers, and heavy-duty gardening machinery
- Commercial Cleaning Appliances: High-suction cordless vacuum cleaners, smart floor scrubbers, and automated sweeping robots
- Light Electric Vehicles (LEVs): High-performance e-motorcycles, premium electric bikes, urban e-scooters, and golf carts
- Portable Energy Storage Systems (ESS): High-wattage outdoor generator stations, solar power packs, and emergency UPS backups
Safety Instructions & Handling Guidelines
- Dedicated Lithium Charger Only: Always charge using a reliable, dedicated Li-ion charger set to 4.2V cut-off limit.
- Voltage Range Protection: Do not overcharge past 4.2V or over-discharge below 1.5V.
- BMS Requirement: Cells must be assembled with a qualified Battery Management System featuring thermal, over-current, and short-circuit protection.
- Thermal Precaution During Welding: Avoid prolonged heat contact; direct soldering on terminals is prohibited.
- Short-Circuit Prevention: Never carry bare cells near metal objects; always transport with insulating terminal caps.
- Storage Protocol: For long-term storage, maintain partial state of charge (3.45V to 3.95V) in cool, moisture-controlled environment.
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Company
Shenzhen EMB Technology Co., Ltd
Location
Building B, No.12 Zirong Road, Kengzi Subdistrict, Pingshan New District, Shenzhen City
Contact Person
Chalito