Description
Samsung 50E 21700 5000mAh Battery – Long-Lasting Power for E-Bikes & Battery Packs
Why Choose the Samsung 50E?
✔️ 5000mAh High-Capacity – Extended runtimes for demanding applications✔️ 9.8A Continuous Discharge – Stable power delivery for high-drain devices
✔️ High Cycle Life – Retains 80% capacity after 500 charge cycles
✔️ Advanced 21700 Cell – Higher energy density than 18650 batteries
✔️ Ideal for Power Tools & E-Bikes – Reliable performance under heavy loads
The Samsung 50E is a premium 21700 lithium-ion battery built for long runtime, efficiency, and durability. With an impressive 5000mAh capacity and a 9.8A continuous discharge rating, this cell is the ideal choice for e-bikes, battery packs, and power tools. Its high energy density ensures longer use between charges, while its low self-discharge rate enhances efficiency.
Compared to standard 18650 cells, the Samsung 50E offers greater power storage and a higher energy-to-weight ratio, making it an excellent option for electric transport, off-grid solar energy storage, and custom battery packs. Built with Samsung SDI’s advanced lithium-ion technology, this battery delivers consistent voltage retention, superior performance, and reliable cycle life.
Specifications
| Brand | Samsung SDI |
| Model | 50E (INR21700-50E) |
| Cell Size | 21700 |
| Nominal Capacity | 5000mAh |
| Minimum Capacity | 4900mAh |
| Continuous Discharge Rating | 9.8A |
| Nominal Voltage | 3.6V |
| Full Charge Voltage | 4.2V |
| Discharge Cutoff Voltage | 2.5V |
| Rechargeable | Yes |
| Protected | No (Unprotected – Requires external protection circuit) |
| Cycle Life | Approximately 500 cycles to 80% capacity |
| Diameter | 21.1 mm |
| Length | 70.7 mm |
| Weight | ~69 g |
💡 Pro Tips for Maximum Performance
🔹 Avoid deep discharges to extend battery lifespan🔹 Use a quality charger to maintain stable voltage levels
🔹 Store batteries at partial charge if not in use for long periods
⭐ Why Buy From IMR Batteries?
🔹 Over a decade of experience providing high-quality lithium-ion cells🔹 One of the largest selections of performance batteries available
🔹 Fast and secure shipping with real-time tracking
🔹 Trusted supplier serving thousands of customers worldwide
⚠ 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 safety warnings and product guidelines are effectively communicated to their customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.