631450 3.7V 370mAh Narrow Design Lithium Polymer Battery

Welcome to explore the 631450 3.7V 370mAh Narrow Design Lithium Polymer Battery from Vcell Power, a trusted manufacturer with over 20 years of battery R&D and production experience. Combining advanced lamination technology with aluminum-plastic soft packaging, we provide a lithium polymer battery solution that balances lightweight design with protective functions for space-constrained portable devices.The product is a lithium polymer cell specifically designed for ultra-thin, narrow spaces. The model number directly represents the nominal dimensions: approximately 6.0mm in thickness, 14.0mm in width, and 50.0mm in length (actual maximum dimensions: 6.5×14.5×52.5mm). This narrow form factor allows it to fit into irregular spaces where cylindrical cells cannot be placed, offering greater freedom for product industrial design.

Core Technical Advantages

Vcell Power integrates lightweight construction, long cycle life, and operational stability into this ultra-thin battery across four key areas:

Advanced Lamination Technology: Uses a stacked electrode structure specific to lithium polymer batteries. Compared to winding processes, this approach offers lower internal resistance, a more stable discharge platform, and better shape adaptability.

Aluminum-Plastic Soft Packaging: The aluminum-plastic film casing provides three key characteristics compared to steel-shell lithium batteries: lighter weight (only 9.0g), shape customizability, and leak-proof and pressure-resistant properties, offering better buffer characteristics in structural design.

Long Cycle Life and Economy: Under standard charge/discharge conditions, cycle life exceeds 700 cycles. The no-memory-effect feature means users do not need to fully discharge before recharging, improving daily usage convenience.

Multiple Protection Features: Can be used with a professional Protection Circuit Module (PCM) providing overcharge protection, over-discharge protection, overcurrent protection, and short circuit protection, ensuring reliable operation across various usage scenarios.

Product Parameter

Why choose VCELL POWER 631450 3.7v 370mAh narrow design lithium polymer battery?

1. With a capacity of 370mAh, the Customizable Lithium Battery is lighter and thinner compared to the 14500 cylindrical lithium-ion battery, reducing the overall weight of the device.

2. The long, flat design allows for flexible integration into various narrow spaces or ultra-thin casings.

3. It boasts a cycle life of over 700 cycles, has no memory effect, supports charging anytime, is durable and reliable, and offers excellent value for money.

4. Customization of wires and connectors is available.

5. Complies with international certifications such as RoHS and CE, is free of harmful substances, and is safe and environmentally friendly.

6. Fully inspected before shipment, quality guaranteed.

Applications

With its narrow, ultra-thin form factor and stable electrical performance, the 631450 3.7V 370mAh Narrow Design Lithium Polymer Battery is widely used in portable smart devices where space is extremely limited:

Audio Devices: Wireless Bluetooth earphones, neckband Bluetooth earphones, mini Bluetooth speakers

Wearable Devices: Smart bracelets, Bluetooth glasses

Medical & Health: Electronic thermometers, portable pulse oximeters

Portable Recording: Portable voice recorders, GPS trackers

Commercial Equipment: POS machines, barcode scanners

Manufacturing Process

Vcell Power has deep technical expertise in lithium polymer battery manufacturing, demonstrated in the following areas:

In-House Cell Formulation: Controls core formulations for cathode, anode, and electrolyte materials, ensuring fundamental cell performance from the source.

Lamination Precision Control: Uses automated lamination equipment to ensure alignment accuracy of each electrode and separator layer, reducing internal resistance and improving consistency.

Formation and Aging Process: Multiple steps including high-temperature aging and room-temperature resting screen out early-life failures, ensuring reliability of shipped batteries.

Flexible Size Customization: Based on mature manufacturing processes, battery thickness, width, length, and capacity can be adjusted according to customer requirements to fit various irregular spaces.

Quality Assurance

Vcell Power strictly follows the ISO9001 quality management system for full-process control. The 631450 3.7V 370mAh Narrow Design Lithium Polymer Battery complies with multiple international environmental and safety standards:

Environmental Compliance: RoHS compliant, free of lead, mercury, cadmium, and other hazardous substances

Safety Certification: CE compliant

Factory Testing: Each battery undergoes strict visual inspection, voltage/internal resistance testing, and sample capacity testing before shipment

After-Sales Service Support

Vcell Power is committed to providing comprehensive after-sales service throughout the product lifecycle for B2B customers:

12-Month Quality Warranty: Within 12 months from shipment, if the battery fails due to manufacturing defects, we provide free repair or replacement.

Professional Technical Support: Dedicated application engineers assist with battery selection, protection board matching, and charging parameter configuration, shortening product development cycles.

Rapid Customer Service Response: Initial reply within 24 hours of receiving customer feedback, with solution or action plan provided within 48 hours.

Sample Testing Support: Standard specification samples are available for functional verification and reliability testing. Sample fees may be refundable upon formal order placement.

Long-Term Supply Commitment: For mass production projects, we commit to stable supply throughout the product lifecycle, avoiding customer production stoppages due to battery model discontinuation.

FAQ

Q: What does "631450" mean?

A: Size code: thickness ~6.0mm, width ~14.0mm, length ~50.0mm. Actual max size: 6.5×14.5×52.5mm.

Q: Does it need a protection board?

A: Bare cell has no protection. Vcell Power finished 631450 3.7V 370mAh Narrow Design Lithium Polymer Battery includes a built-in PCM for safe use.

Q: Difference from cylindrical 18650 battery?

A: Polymer is thinner, lighter, shape-customizable. Cylindrical has fixed size/shape. Polymer suits narrow/irregular spaces better.

Q: Can you customize size or capacity?

A: Yes. Contact our sales engineer with your requirements.

Q: Samples available?

A: Yes. Please contact our sales team for sample request.

Q: Shelf life and storage?

A: 12 months unopened at 20±5°C, ≤65% humidity. Recharge every 3-6 months to 3.7V~3.9V.