LiitoKala Lii-40A 21700 4000mAh Battery — A Powerful Solution for High Loads

Description of LiitoKala Lii-40A 21700 4000mAh Battery

The LiitoKala Lii-40A 21700 lithium battery is designed to power power tools, LED flashlights, household appliances, and other devices with increased power consumption. Thanks to its optimized capacity and low internal resistance, this cell ensures stable operation of devices even under intense loads.

The nominal capacity of the battery is 4000 mAh at a nominal voltage of 3.65 V, which guarantees long-lasting power without frequent recharging. The cell can withstand continuous discharge current up to 10C, making it suitable for use in powerful assemblies. Low internal resistance — less than 20 mOhm — reduces voltage sag and the risk of overheating during peak loads.

The service life of LiitoKala Lii-40A exceeds 1000 charge-discharge cycles at 80% depth of discharge, ensuring long-term operation in various applications. The battery is suitable for forming battery packs: 3S, 4S, 7S, 10S, 20S, etc., where high energy density and reliability are important.

The case dimensions are 21 x 70 mm, and the weight is 67 g. Charging is standard: input charging voltage 4.20 V and input charging current up to 4000 mA. The recommended temperature range for charging is from 0°C to 45°C, optimal storage temperature is from -20°C to 45°C.

Specifications

• Brand: Liitokala
• Name: LiitoKala Lii-40A
• Size: 21700
• Nominal Capacity: 4000 mAh
• Nominal Voltage: 3.65 V
• Internal Resistance: < 20 mOhm
• Input Charging Voltage: 4.20 V
• Input Charging Current: 4000 mA
• Maximum Discharge Current: 10 C
• Charging Temperature: from 0°C to 45°C
• Optimal Storage Temperature: from -20°C to 45°C
• Service Life: ≥ 1000 cycles
• Dimensions: 21 x 70 mm
• Weight: 67 g

This battery is ideal for applications requiring high capacity and stable current supply: professional flashlights, power tools, portable devices, and other systems that need a reliable power source. By choosing LiitoKala Lii-40A, you get a product from the well-known manufacturer Liitokala with increased durability and good electrical characteristics.

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