Key Features
- 5330mAh High Capacity: Standard discharge capacity of ≥5330mAh at 0.2C to 2.5V, with a rated discharge capacity of ≥5170mAh at 1C — delivering reliable, high-energy output for extended-runtime applications.
- 20Wh Energy Output: Typical energy class of 20.0Wh per cell, positioning the 58E as one of the highest-energy cylindrical 21700 cells in its class.
- Stable Continuous Discharge: Maximum continuous discharge of 2C / 10.7A, optimized for energy-dense applications where sustained, controlled current draw is the primary design requirement.
- Low Impedance Design: Initial AC impedance of ≤15mΩ at 1kHz after standard charge for efficient energy transfer and consistent performance across the discharge cycle.
- 500-Cycle Durability: Retains ≥4136mAh capacity after 500 cycles under 0.5C charge and 1C discharge conditions, ensuring reliable long-term performance in professional battery pack applications.
Overview
The Samsung 58E is a high-capacity cylindrical 21700 lithium-ion cell engineered for energy-focused applications where maximum runtime and long-term reliability are the primary design objectives. Delivering a standard discharge capacity of ≥5330mAh at a nominal voltage of 3.64V, the 58E achieves a typical energy output of 20.0Wh per cell — among the highest available in the 21700 format. Its maximum continuous discharge rating of 2C / 10.7A makes it well suited to applications with moderate, sustained current requirements, where energy density takes priority over peak discharge capability. An initial AC impedance of ≤15mΩ supports efficient energy delivery with minimal resistive losses, and a rated cycle life of ≥4136mAh after 500 cycles under standard charge and discharge conditions ensures dependable performance over extended service. The 58E is an unprotected cell intended for integration into professionally engineered battery pack assemblies with appropriate protection circuitry and spot-welded interconnects — direct soldering to the cell is not recommended.
Applications / Uses
- Electric vehicles and e-bikes prioritizing maximum range and energy density per cell
- Professional battery pack manufacturing for energy storage and long-runtime systems
- Portable power stations and backup energy systems requiring high per-cell capacity
- Medical devices and industrial equipment where consistent, controlled discharge is essential
- Lighting systems, robotics, and electronics applications demanding high energy density and cycle reliability
Specifications
| Brand: | Samsung SDI |
| Model: | 58E (CC5493F101) |
| Battery Type: | 21700 Lithium-Ion (INR) |
| Standard Discharge Capacity: | ≥5330mAh (0.2C to 2.5V) |
| Rated Discharge Capacity: | ≥5170mAh (1C to 2.5V) |
| Typical Energy: | 20.0Wh |
| Nominal Voltage: | 3.64V |
| Full Charge Voltage: | 4.20V |
| Discharge Cutoff Voltage: | 2.5V |
| Standard Charge Current: | 0.5C / 2665mA |
| Maximum Charge Current: | 1C / 5330mA |
| Standard Charge Time: | ~4 hours |
| Charge Method: | CC-CV |
| Max Continuous Discharge: | 2C / 10.7A |
| Initial AC Impedance: | ≤15mΩ (AC 1kHz) |
| Cycle Life: | ≥4136mAh after 500 cycles |
| Charge Temperature: | 0°C to 45°C |
| Discharge Temperature: | -10°C to 60°C |
| Storage Temperature: | Up to 1 year at -20°C to 23°C |
| Battery Top: | Flat Top |
| Protected: | No |
| Diameter: | 21.78mm (Max) |
| Height: | 71.00mm (Max) |
| Weight: | 74g (Max) |
| Rechargeable: | Yes |
⚠ 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 a cell shows signs of thermal runaway (e.g., smoke, swelling, hissing, or heat), stop use immediately and, if it can be done safely, move it to a non-flammable surface (e.g., concrete or sand) away from combustible materials. Lithium-ion cells burn as Class B fires — use an ABC / dry-chemical fire extinguisher, or douse with large amounts of water to cool the cell and prevent the fire from spreading. Do not rely on a small spray; thorough cooling is required, and cells can reignite from residual heat, so monitor the area afterward. (Class D extinguishers are intended for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
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.