The Samsung 20S is a high-performance 18650 cell with a nominal capacity of 2000 mAh and a continuous discharge rating of 30 A. This makes it one of the most powerful 18650 batteries available for applications that demand very high current, such as advanced mods.
The battery is an INR Li-ion type without an internal protection circuit (unprotected). This means all safety features must be handled by the device or charger. The nominal voltage is 3.6 V, the maximum charge voltage is 4.2 V, and the discharge cut-off is around 2.5 V. Dimensions are approximately 18.3 × 65.0 mm and the weight is about 45 g.
Contents
- 1 × Samsung 20S 18650 battery
Features
- Type: INR / Li-ion 18650
- Capacity: 2000 mAh
- Continuous discharge: 30 A
- Nominal voltage: 3.6 V
- Full charge voltage: 4.2 V
- Discharge cut-off: approx. 2.5 V
- Dimensions: ~18.3 × 65.0 mm
- Weight: ~45 g
- Protection: No internal protection circuit (unprotected – requires device/charger with safety features)
- Manufacturer: Samsung SDI
Frequently Asked Questions
How do I charge the Samsung 20S?
Use a quality Li-ion charger with a CC/CV profile charging up to 4.2 V and monitoring cells individually.
Is this battery safe for mods and e-cigarettes?
Yes, as long as the device has the necessary safety protections and the battery is used within its rated specifications.
How long does the battery last between charges?
With 2000 mAh capacity, runtime is shorter than high-capacity cells. The 20S is designed for high current draw rather than long endurance.
What is the difference between the Samsung 20S and other 18650 cells?
The 20S offers an unusually high continuous discharge rating of 30 A, while most 18650s are rated around 15–25 A. However, it has lower capacity.
About Samsung SDI
Samsung SDI is a global leader in lithium-ion battery manufacturing. Their cells are known for combining safety, performance and reliability across both consumer and industrial applications.
