Description
Samsung 40T 21700 4000mAh Battery – Power Beyond Limits
Push the limits of power with the Samsung 40T 21700 battery, boasting a high capacity of 4000mAh and an impressive 35A continuous discharge rate. Designed for critical applications where power density and performance are essential, this battery excels in electric vehicles, high-performance portable devices, and intensive industrial applications. With advanced technology, the Samsung 40T ensures efficiency, durability, and exceptional reliability under various environmental conditions.
Key Features:
- Exceptional Capacity: 4000mAh for long-lasting energy supply, ensuring your devices operate longer on a single charge.
- High Discharge Rate: 35A continuous discharge, making it ideal for high-drain applications that demand intense power delivery.
- Quick Charging: Capable of rapid recharging with high-rate capability, minimizing downtime and improving usability.
- Temperature Resilience: Performs reliably in a broad temperature range from -20°C to 60°C, perfect for challenging environmental conditions.
- Durability and Safety: Built with robust safety features to prevent overcharging, over-discharging, and overheating, ensuring safe operation and extended battery life.
Whether you need a reliable power source for high-performance devices or critical industrial applications, the Samsung 40T 21700 battery delivers the capacity, discharge rate, and durability you can trust.
SPECIFICATIONS
| Manufacturer: | Samsung SDI |
| Model: | INR21700-40T (40T) |
| Size: | 21700 |
| Positive Terminal: | Flat Top |
| Nominal Capacity: | 4000mAh |
| Continuous Discharge Rating (max): | 35A Maximum Continuous (1C) |
| Nominal Voltage: | 3.6V |
| Maximum Voltage: | 4.2V |
| Discharge cut-off Voltage: | 2.5V |
| Protected: | NO, UNPROTECTED. |
| Rechargeable: | Yes |
| Approx. Dimensions: | 21.1mm x 70.4mm |
| Approx. Weight: | 66.8g |
| Country of Origin: | Republic of Korea |
| Data Specification Sheet: | Samsung 40T Datasheet |
⚠ 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 or box.
- 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 use in devices such as e-cigarettes or vaporizers.
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What is Thermal Runaway?
- A dangerous chain reaction where heat generated by a failing battery causes it to overheat further, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid physical damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases or boxes 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. These are signs of internal damage or instability, and continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger designed specifically for lithium-ion batteries and ensure that the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
- Prohibited Activities: Do not short circuit, modify, puncture, crush, expose to liquids, or solder directly onto the battery (spot weld only).
- Emergency Response: If the battery shows signs of thermal runaway (e.g., smoke, swelling, or heat), immediately stop use and move it to a non-flammable surface (e.g., concrete or sand). For fires, use a Class D fire extinguisher or sand—never use water.
Disclaimer
IMR Batteries 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 product warnings and safety guidelines are effectively communicated to their customers. Some cells are sold in bulk packaging and are not individually packaged. Resellers must provide appropriate packaging for each individual cell sold and must not distribute cells loose, unprotected, or without a proper storage box or case.
Product compatibility is the sole responsibility of the customer. IMR Batteries does not guarantee compatibility with any specific device or application. We are not responsible for the design, assembly, performance, or safety of any battery pack constructed using our cells. It is the customer’s responsibility to ensure proper cell matching, protection circuitry, configuration, and safe construction practices. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.