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Pricelist: Retail Price (B2C) Pricelist
High-Performance Li-ion 18650 Battery – 3.7V 2600mAh Rechargeable Cell (44 Grams) for Robotics, EV Prototypes, and High-Drain DIY Electronics

High-Performance Li-ion 18650 Battery – 3.7V 2600mAh Rechargeable Cell (44 Grams) for Robotics, EV Prototypes, and High-Drain DIY Electronics

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ParameterDetailed Specification
Cell TypeLithium-ion (Li-ion)
Form Factor18650
Nominal Voltage3.7V
Capacity2600 mAh
Weight44 Grams (±1g)
Charging Voltage4.2V
Discharge Cut-off2.5V–2.75V
Max Discharge CurrentOptimized for Standard & High-Drain applications
Price
₹ 127.12 ₹ 127.12
(Tax included)

Product Description

Power your high-demand electronics with the 3.7V 2600mAh 18650 Lithium-ion Battery. This cell is engineered for reliability, offering a balanced power-to-weight ratio that is ideal for weight-sensitive applications like drones, portable medical devices, and robotics. At 44 grams, this battery represents a high-density energy storage solution compared to generic, lighter cells. At Robogears, we recommend this specific 2600mAh cell for its stable discharge curve and longevity. Whether you are building a custom battery pack for an electric vehicle prototype in Pimpri or upgrading your cordless power tools, these 18650 cells provide the consistent current and capacity required for professional engineering projects.

Detailed Key Features

  • High Energy Density: Packs a significant 2600mAh capacity into the standard 18mm x 65mm form factor, ensuring longer runtimes for your portable devices.

  • 44g Solid Construction: The 44-gram weight is a hallmark of genuine internal chemistry and high-quality materials, distinguishing it from lower-capacity "knock-off" cells.

  • Low Self-Discharge: Designed to retain its charge over long periods of inactivity, making it perfect for emergency lighting and backup power systems.

  • Flat-Top Design: Features a flat positive terminal, making it ideal for spot-welding into custom battery packs or fitting into standard spring-loaded 18650 holders.

  • Rechargeable Versatility: Rated for hundreds of charge-discharge cycles when maintained within the recommended voltage thresholds.

All Technical Details

  • Cycle Life: Approximately 300–500 cycles (to 80% capacity).

  • Internal Resistance: Low ESR for efficient power delivery during high-current bursts.

  • Chemistry: Lithium Cobalt Oxide (LiCoO2) or similar stable Li-ion chemistry.

  • Storage Temperature: Recommended 15°C to 25°C for maximum lifespan.

  • Safety: Designed with internal pressure relief valves to prevent thermal runaway under extreme conditions.

Prototyping & Engineering Tips (Robogears Exclusive)

  • Battery Management System (BMS): Never use these cells without a proper BMS. A BMS protects your project at your Pimpri workshop from over-charging (>4.2V) and over-discharging (<2.5V), both of which can permanently damage Li-ion chemistry.

  • Spot Welding vs. Soldering: For the best electrical connection, use a spot welder with nickel strips. If you must solder, be extremely fast (under 2 seconds) and use a high-wattage iron (like our 60W model) to prevent heat from reaching the internal chemical layers.

  • Pack Balancing: When building a multi-cell pack (e.g., 12V 3S2P), ensure all cells are at the exact same voltage level before connecting them to prevent heavy current flow between cells.

  • Genuine Weight Check: In the world of 18650s, weight is a key indicator of quality. A cell weighing exactly 44g typically indicates a genuine 2600mAh capacity, whereas cells under 38g often fail to meet their rated specifications.

Package Includes

  • 1 x Li-ion 18650 3.7V 2600mAh Battery (44g)

Image Disclaimer

Product images are shown for illustrative purposes only. The color of the PVC wrap (commonly Blue, Green, or Pink) or the brand markings may vary between manufacturing batches, though all technical specifications and the 44g/2600mAh rating remain as described.