Key Features
- High Energy Capacity: 5000mAh nominal capacity supports extended runtime in demanding applications.
- Extreme Discharge Capability: Up to 40A continuous discharge without temperature cutoff and up to 90A with 75°C cutoff.
- Ultra-Low Internal Resistance: ≤4mΩ (AC 1kHz @ 25°C, 30% SOC) minimizes voltage sag and improves efficiency.
- High-Power INR Chemistry: Lithium-ion formulation optimized for stability, performance, and durability.
- Flat Top Unprotected Design: Intended for integration into engineered battery packs with appropriate BMS and protection circuitry.
Overview
The TENPOWER INR21700-50XG is a high-output lithium-ion battery cell engineered for professional applications that demand both high current delivery and strong energy density. Featuring a 5000mAh nominal capacity and exceptionally low internal resistance, the 50XG provides stable voltage performance and reduced thermal stress under load. Designed for battery pack assembly, this flat-top unprotected cell delivers up to 40A continuous discharge — and up to 90A continuous when operating with a temperature cutoff — making it ideal for advanced power systems and high-performance mobility solutions.
Applications / Uses
- Electric vehicles and e-mobility systems
- High-performance battery pack assemblies
- Power tools and industrial equipment
- Robotics and automation platforms
- Energy storage systems (ESS)
SPECIFICATIONS
| Brand: | TENPOWER |
| Model: | INR21700-50XG |
| Battery Type: | 21700 Lithium-Ion (INR) |
| Nominal Capacity: | 5000mAh |
| Minimum Capacity: | 4950mAh |
| Nominal Voltage: | 3.6V |
| Full Charge Voltage: | 4.2V (max 4.25V) |
| Discharge Cutoff Voltage: | 2.5V |
| Max Continuous Discharge: | 40A (no temp cutoff) / 90A (75°C cutoff) |
| Max Pulse Discharge: | 140A (3 seconds) |
| Standard Charge Rate: | 0.5C (2.5A, CCCV) |
| Max Charging Current: | 15A |
| Internal Resistance: | ≤4mΩ (AC 1kHz) |
| Cycle Life: | ≥500 cycles (≥60% capacity retention) |
| Operating Temperature: | Charge 0–45°C / Discharge −20–60°C |
| Cell Surface Temperature: | Discharge up to 80°C |
| Battery Top: | Flat Top |
| Protected: | No (Unprotected Cell) |
| Diameter: | ≤21.50mm |
| Length: | ≤70.50mm |
| Weight: | ≤71g |
⚠ Important Safety Warnings
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or for e-cigarettes, vaporizers, or similar devices.
-
Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
-
Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If the battery overheats, emits smoke, or swells, move it to a non-flammable surface (e.g., sand or concrete) and stop use immediately. In case of fire, use a Class D fire extinguisher or sand. Do not use water.
Disclaimer
18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.