18650 battery 3.7v 6000mah.Lithium battery waterproof grade

　　The protection level, commonly known as IP level, is designed to prevent dust and water from affecting the insulation performance of the battery cells, electrical components, control system circuit boards, etc. inside the battery pack and causing corrosion to metal components;

　　If the protection level of the lithium battery casing does not meet the requirements for dust and water prevention, the environmental conditions of the battery cells and electrical components are in an uncontrollable state. In general working environments, excessive dust can reduce the insulation performance of electrical components. In systems with low protection levels such as electrical clearances and creepage distances, larger allowances need to be reserved. Excessive humidity not only affects insulation performance, but also causes an increase in the self discharge rate of lithium batteries, making conductors more prone to corrosion. Furthermore, the internal resistance of the system increases, and during the charging and discharging process, more electricity will be converted into ohmic heat for consumption.

　　IP67 dustproof and waterproof lithium battery pack

　　Product numbers: HDB4073L, HD4074L

　　Nominal capacity: 1800mAh, 2200mAh

　　Nominal voltage: 7.4V

　　Waterproof grade: IP67

　　Battery size: 90 × twenty × 55mm

　　Battery weight: 135g, 180g

　　Product certification: ISO9001:2000, CE, FCC

　　Storage temperature: -20 ℃ -35 ℃

　　The IP level of the handheld terminal product of the walkie talkie reflects the waterproof and dustproof capabilities of the walkie talkie and its accessories, especially for outdoor work, which inevitably involves harsh environments with high humidity or dust. The sealing and waterproof capabilities of the walkie talkie and its accessories are crucial to ensuring the safe operation and lifespan of the walkie talkie. To this end, the IEC529 standard has been formulated internationally. In order to adapt to this, the Japanese industrial standard divides the waterproof protection of electronic products into 10 levels, represented by IPX1, IPX2.

　　The waterproof grade of HDB4073L and HD4074L lithium batteries is IP67, which can completely prevent dust from entering and can withstand water immersion (1m) for more than 30 minutes in a short period of time. At the same time, improvements and updates have been made to the battery cells and circuit boards, adding power management functions to ensure that the number of cycles can reach over 1000, ensuring user needs and battery life.

　　At present, the battery has been applied to government departments, railway systems, small and medium-sized commercial users, as well as large-scale projects such as national engineering, nuclear power plants, walkie talkies, etc.

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