3.7V 906090 LiPo Battery

A 3.7V 906090 LiPo battery employs a single lithium polymer pouch-cell design. Its nominal voltage is established by engineers at 3.7V, and the maximum charge is 4.2V. They have low internal resistance to guarantee the regular flow of electricity. The stabilization of capacity is achieved through the matching of electrodes by manufacturers and the regulation of the composition of electrolytes. As a result, the battery maintains a consistent performance when charged and discharged repeatedly.

Materials and Electrode Construction

The internal structure is made by producers coating lithium cobalt oxide or mixed cathode materials with graphite anodes. Foils of copper and aluminum are used as current collectors, which offer low-resistance routes. Besides this, an electrode contact is avoided by a microporous polymer separator that permits the passage of ions through it. The chemistry is contained within an aluminum-plastic laminated pouch, which is flexible and resists mechanical stress. This also prevents punctures or deformation of the battery when handling.

Assembly and Electrical Configuration

The first sorting of cells is done by technicians based on voltage and internal impedance to minimize inconsistencies. They apply precision spot welding to fix nickel tabs, creating solid electrical connections with the least amount of heat. They then incorporate a protection circuit module to check and regulate overcharge, over-discharge, and overcurrent. Strain relief is used to ensure that lead wires do not loosen when vibrating or moving. These measures make the battery safe and reliable.

Sealing and Structural Finishing

The pouch is closed by heat-lamination by workers. This fixes the electrolyte and prevents the entry of moisture. They then use outer insulation layers to enhance mechanical strength and to retain the size of the battery. Technicians also conduct leak and insulation resistance tests after sealing to ensure structural integrity. Such checks ensure that there is uniformity in quality between production batches.

Standards and Charging Control

Manufacturers adhere to international safety and transport regulations, such as UN38.3, CE, and RoHS compliance. They use a constant-current/constant-voltage (CC/CV) technique to regulate the charge and restrict the voltage to 4.2V per cell. Lastly, cycle tests are performed by engineers at controlled temperatures to ensure stable discharge behavior. These tests are used to assure performance of the battery during repeated high-rate operation.

Product Features

1. Large Capacity and Constant Production

True 6000mAh capacity and low self-discharge guarantee constant and extended power.

2. Multi-Protection Safety Design

Built-in overcharge, over-discharge, over-current, and short-circuit protection is provided to operate safely.

3. Flexible Customization

Favors the addition of wires, protection PCBs, terminal connectors, and other customizations according to customer requirements.

4. Long Cycle Life

Constructed to operate in a stable manner with repeated charge and discharge cycles.

5. Wide Application Range

Suitable for various portable and compact electronic devices.

6. Factory Direct Supply

High-quality control, quick sample support, and OEM service.

Product Application Areas

Perfect for portable and everyday-use electronics that need safety, extended cycle duration, and small size.

• Personal Care: Electric toothbrushes, Sports bracelets, Medical devices.
• Audio & Entertainment: Headphones, Speakers, Toys.
• Daily Electronics: LED lights, General electronic products.