Samsung INR 21700 40T Battery

Samsung INR 21700 40T 4000mAh Li-Ion 3.6V 30A Battery - Professional Power Source

Key Technical Parameters:

• Precise Dimensions: 21.1 x 70.4 mm
• Dedicated Model: 21700 40T
• Compact Weight: 66.8g
• Peak Pulse Discharge Current: 35A
• Stable Continuous Discharge Current: 15A

Full charging of the battery is required upon receipt

Usage Recommendations:

• Avoid complete battery discharge (below 2.5V under load or 3V without load)
• Perform full charging before first use (up to 4.2V)
• Absolute prohibition of charging above 4.3V
• Always supervise the charging process
• Use only professional chargers
• Protect from excessive heating

USAGE SAFETY

Lithium-ion cells require special attention during operation. Each cell must be equipped with a PCM protection circuit. Improper use may result in fire or explosion. Follow manufacturer guidelines. ❌Avoid short circuits - do not carry with metal objects. ❌Pay attention to correct polarity when connecting. ❌Monitor charge level. ❌Use only original, undamaged chargers. ❌Do not exceed charging time beyond 12 hours. ❌Protect from moisture and extreme temperatures. ❌Check insulation condition. ❌Keep away from fire sources. ❌Avoid strong shocks. ❌Do not deform or disassemble. ❌Do not solder. Store in a place inaccessible to children. Use a special case in a cool, dry place. Dispose of used cells for recycling in accordance with local regulations.