Samsung 40T

The Samsung INR21700-40T is a high-quality 21700 type lithium-ion battery designed for high-performance applications. With a capacity of 4000 mAh, it offers extended operating time and a robust power supply for various portable electronic devices. The INR21700-40T battery cell is an excellent choice for devices that require substantial energy demands.

Key Specifications:

• Capacity: 4000 mAh (typical) / 3900 mAh (minimum)

• Nominal Voltage: 3.6 V

• Full Charge Voltage: 4.2 V

• Discharge Cut-off Voltage: 2.5 V

• Continuous Discharge Current: 35 A

• Pulse Discharge Current: Up to 45 A (with 80°C temperature cut-off)

• Dimensions: 21.1 mm (diameter) × 70.4 mm (length)

• Weight: Approximately 66.8 g

• Cycle Life: Approximately 300+ charge cycles

• Cell Type: Unprotected / flat top

• Safety Features: Tested for overcharge, over-discharge, short circuit, heating, and drop — no fire or explosion in tests