The Samsung 30T is a high-performance 21700 cell with a capacity of 3000 mAh and an impressive continuous discharge rating of up to 35 A. This makes it one of the most powerful 21700 batteries available, designed for applications that demand very high current draw.
The battery is an INR Li-ion type without an internal protection circuit (unprotected). This means all safety functions must be managed by the device or charger. The nominal voltage is 3.6 V, maximum charge voltage 4.2 V, and the discharge cut-off is about 2.5 V. Dimensions are approximately 21.1 × 70.2 mm and the weight is about 68 g.
Contents
- 1 × Samsung 30T 21700 battery
Features
- Type: INR / Li-ion 21700
- Capacity: 3000 mAh
- Continuous discharge: 35 A
- Nominal voltage: 3.6 V
- Full charge voltage: 4.2 V
- Cut-off voltage: approx. 2.5 V
- Dimensions: ~21.1 × 70.2 mm
- Weight: ~68 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 30T?
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 it is used within specifications and only in devices with proper safety protections.
How long does the battery last between charges?
With 3000 mAh capacity, it provides balanced runtime, but it is primarily designed for very high discharge rather than long endurance.
What is the difference between the Samsung 30T and 40T?
The 30T is optimised for extreme high-drain use (35 A), while the 40T has higher capacity (4000 mAh) but lower continuous discharge (about 25 A).
About Samsung SDI
Samsung SDI is a leading manufacturer of lithium-ion batteries, known for high-quality cells that deliver performance, safety and reliability. Their products are widely used in everything from consumer electronics to demanding industrial applications.
