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18650 3.7V 6000mAh Li-ion High-Capacity Rechargeable Battery Cell (44g) for DIY

18650 3.7V 6000mAh Li-ion High-Capacity Rechargeable Battery Cell (44g) for DIY

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ComponentSpecification
ChemistryLithium-Ion (Li-ion)
Model18650
Nominal Voltage3.7V
Full Charge Voltage4.2V
Capacity6000mAh (Rated)
Weight44 Grams (High-Density Core)
Top StyleFlat Top
Price
₹ 110.17 ₹ 110.17
(Tax included)

Product Description The 18650 6000mAh is an ultra-high-capacity power cell designed for projects requiring maximum energy density in a standard 18mm x 65mm form factor. Weighing a solid 44 grams, this battery utilizes a high-density chemical composition to provide extended runtimes for portable electronics, high-power LED flashlights, and custom battery bank builds. Its flat-top design is ideal for spot-welded industrial packs or high-quality spring-loaded battery holders, offering a reliable 3.7V nominal output for a wide range of hobbyist and professional applications.

Key Features

  • Maximum Runtime: High rated capacity designed for long-duration discharge cycles.

  • Premium Build Quality: 44g weight indicates a dense internal structure for consistent energy storage.

  • Stable Voltage Curve: Maintains steady 3.7V power delivery, essential for sensitive electronic modules.

  • Low Self-Discharge: Engineered to retain charge efficiently during periods of inactivity.

  • Versatile Integration: Standardized sizing fits all 18650-compatible chargers, holders, and enclosures.

Technical Details

  • Dimensions: 18 mm (Diameter) x 65 mm (Height)

  • Standard Charge Current: 0.5C to 1C

  • Discharge Cut-off Voltage: 2.75V

  • Charge Cut-off Voltage: 4.2V ± 0.05V

  • Storage Temperature: -20°C to +45°C

  • Internal Protection: Unprotected (External BMS required for safety)

Prototyping and Engineering Tips from Robogears

  • Capacity Management: For ultra-high-capacity cells, ensure your charging module (like a TP4056) is well-ventilated, as charging large-capacity batteries at high currents for long durations generates consistent heat.

  • BMS is Critical: Since this is an unprotected industrial cell, always use a Battery Management System (BMS) in your circuit. A BMS prevents the cell from dropping below 2.5V, which can permanently damage the lithium chemistry.

  • The Weight Metric: At 44g, this cell is at the upper end of the 18650 weight class. Heavier cells generally offer better thermal stability and truer capacity compared to lightweight, low-quality alternatives.

  • Parallel Use: When combining multiple 6000mAh cells in parallel to create a massive power bank, ensure all cells are fully charged to exactly 4.2V before connecting them to prevent high-current balancing arcs.

Package Includes

  • 1 x 18650 3.7V 6000mAh Li-ion Rechargeable Battery (44g)

Disclaimer Images are for reference; actual cell color or labeling may vary by batch. Specifications subject to change by manufacturer. Handle with care; never short-circuit terminals or expose to fire.