The Samsung 25R is one of the most well-known and reliable 18650 cells. It offers a capacity of 2500 mAh and a continuous discharge rating of up to 20 A, making it a stable and versatile choice for mods and other high-drain applications.
This is an INR Li-ion cell without an internal protection circuit (unprotected). This means safety features must be managed by the device or charger. The nominal voltage is 3.6 V, maximum charge voltage 4.2 V, and 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 25R 18650 battery
Features
- Type: INR / Li-ion 18650
- Capacity: 2500 mAh
- Continuous discharge: 20 A
- Maximum short pulse discharge: up to approx. 25 A
- Nominal voltage: 3.6 V
- Full charge voltage: 4.2 V
- Cut-off voltage: 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 25R?
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, if used within its specifications and only in devices with proper safety features.
How long does the battery last between charges?
With 2500 mAh capacity, it provides a balanced runtime suitable for moderate to heavy use.
Why is the Samsung 25R so popular?
It is a proven cell that combines reliability, decent capacity and sufficient discharge performance for most needs.
About Samsung SDI
Samsung SDI is a global leader in lithium-ion battery manufacturing. Their cells are recognised worldwide for quality, safety and reliability in both consumer and industrial applications.
