751835 High Drain LiPo Battery 420mAh

A high drain LiPo battery 420mAh uses a single pouch-cell structure. Engineers set its nominal voltage at 3.7V and limit full charge to 4.2V. In addition, the design supports high current output while keeping internal resistance low. Manufacturers also control capacity through strict electrode matching and electrolyte dosing. This approach keeps electrical behavior stable during fast load changes.

Material Composition and Cell Structure

Producers build the cell with lithium cobalt or blended cathode materials. They pair these with graphite anodes to support fast ion movement. Copper and aluminum foils guide electron flow inside the cell. Meanwhile, a microporous separator prevents electrode contact and blocks internal short circuits. The outer pouch uses aluminum-plastic laminate. It keeps the internal chemistry sealed and stable under physical stress.

Assembly and Electrical Configuration

Technicians sort cells by impedance and voltage before assembly. This step reduces imbalance in the final battery pack. Next, they use spot welding to attach nickel tabs. The process forms a low-resistance electrical path. It also limits heat impact on the electrodes. After that, a protection circuit module is installed. It controls overcharge, over-discharge, and over-current conditions. In addition, lead wires receive strain relief to prevent connection failure during movement.

Sealing and Structural Finishing

Workers seal the pouch cell using heat-lamination. This step locks in electrolyte and blocks moisture entry. Then, they apply insulation layers to strengthen the outer structure. These layers also help maintain shape stability. After sealing, technicians run pressure and insulation tests. They check for leaks and electrical safety before final packaging.

Standards and Electrical Control

Manufacturing follows UN38.3, CE, and RoHS requirements. These standards guide transport and material safety. Charging uses a constant-current/constant-voltage method. The system limits voltage to 4.2V per cell. Finally, cycle tests run under controlled temperature conditions. These tests confirm stable discharge behavior during repeated use.

Product Features

• Customization Supported: Can be customized according to customer needs
• High Power: Up to 20C discharge
• Fast Charging: Up to 3C charging
• Long Lifespan: Meets the requirements for long-term product use
• Multi-Material System: Covers LCO, NCM, NCA, LFP, and other material systems
• High Safety: Passes safety performance tests
• Sufficient Capacity: Meets product design capacity requirements
• High Temperature Resistance: Operating temperature range -20℃ ~ 80℃

Application Scenarios

• Electronic Atomizers
• Voice Recorders
• Headphones
• Beauty Devices