20700 Batteries | Durable Lithium-Ion Power Solutions

A 20700 battery is a high-capacity, rechargeable lithium-ion (Li-ion) cell designed for higher energy storage and power output than traditional 18650 batteries. With dimensions of 20mm in diameter and 70mm in length, it offers improved runtime, efficiency, and performance, making it an ideal power source for electric vehicles, power tools, flashlights, vaping devices, and battery packs.

Key Features & Specifications

• Voltage: Typically 3.6V or 3.7V nominal, with a full charge voltage of 4.2V and a discharge cutoff around 2.5V – 3.0V.
• Capacity: Ranges from 3000mAh to over 4500mAh, depending on the chemistry and brand.
• Battery Chemistry Options:
  • Lithium Cobalt Oxide (LiCoO₂ - LCO): High energy density for long-lasting performance.
  • Lithium Manganese Oxide (LiMn₂O₄ - LMO): Improved safety and thermal stability.
  • Lithium Nickel Manganese Cobalt Oxide (LiNiMnCoO₂ - NMC): A balance of energy density, power output, and longevity.
  • Lithium Iron Phosphate (LiFePO₄ - LFP): Superior cycle life and extreme durability but operates at 3.2V nominal instead of 3.7V.

Protected vs. Unprotected 20700 Batteries

• Protected 20700 Batteries: Include an integrated protection circuit to prevent overcharging, over-discharging, and short circuits, making them slightly longer than standard cells.
• Unprotected 20700 Batteries: Preferred for high-drain applications where an external Battery Management System (BMS) is used.

Common Applications for 20700 Batteries

✔ Electric Vehicles (EVs) & E-Bikes – Used by manufacturers like Tesla for long-range, high-efficiency battery packs.
✔ High-Powered Flashlights & LED Devices – Longer runtimes for high-lumen tactical and everyday carry flashlights.
✔ Vaping & Power Tools – Designed for high-drain vape mods and heavy-duty cordless tools.
✔ Renewable Energy Storage & UPS Systems – Ideal for solar battery banks and uninterruptible power supplies (UPS).

Choosing the Right 20700 Battery

📌 Voltage Compatibility: Ensure your device supports 3.6V or 3.7V, as some applications may require LiFePO₄ (3.2V) cells.
📌 Protected vs. Unprotected: If your device lacks built-in safety features, choose a protected cell.
📌 Flat Top vs. Button Top: Some devices require button tops for proper contact, while others use flat tops.

At 18650Battery.com, we offer a wide range of authentic, high-performance 20700 batteries from top manufacturers, ensuring long-lasting reliability and safety. Browse our selection today for the best power solutions!