3.7 V 750mAh Lithium Ion Battery 503048

The 503048 3.7V 750mAh LiPo battery is a compact rechargeable battery designed for portable electronics that require reliable power in a limited space. With a slim 5×30×50mm profile, lightweight 16g structure, and stable 3.7V output, it provides an efficient energy solution for modern consumer devices.

The UFX503048 lithium polymer battery combines balanced capacity, compact dimensions, and reliable charging performance, making it suitable for wearable devices, IoT products, smart electronics, portable equipment, and other space-sensitive applications.

Part 1. What Does The 503048 Battery Model Mean?

The 503048 battery model represents the approximate physical dimensions of the lithium polymer battery. Understanding this naming system helps engineers quickly identify whether a battery can fit their device design.

The numbers in 503048 indicate:

• 50 – Represents the battery length of approximately 50mm.

• 30 – Represents the battery width of approximately 30mm.

• 48 – Represents the battery thickness of approximately 4.8mm.

The actual maximum dimensions of the UFX503048 battery are 5×30×50mm. Its slim profile allows integration into compact electronic products where traditional battery formats may not provide enough design flexibility.

Part 2. Specifications Of The UFX503048 3.7V 750mAh Battery

The UFX503048 is a rechargeable lithium polymer battery designed to deliver stable power performance while maintaining a compact size. Its specifications provide a balance between energy capacity, weight, and reliability.

• Battery Type: Lithium Polymer Battery

• Model: UFX503048

• Nominal Voltage: 3.7V

• Capacity: 750mAh

• Charging Voltage: 4.2V

• Dimensions: 5×30×50mm (MAX)

• Charging Current: 0.5C–1C

• Discharging Current: 0.5C–1C

• Cycle Life: Approximately 300 cycles

• Internal Resistance: <180mΩ

• Weight: Approximately 16g

These parameters make the 503048 LiPo battery a practical choice for compact devices that need dependable rechargeable power.

Part 3. Key Features Of The 503048 750mAh Battery

Slim 5mm Design For Space-Limited Devices

The UFX503048 features a slim 5mm thickness, allowing it to fit into portable electronics with strict space limitations.

• Reduces overall device thickness.

• Provides greater flexibility for internal component placement.

• Supports compact and lightweight product designs.

Balanced 750mAh Capacity And Lightweight Structure

With a 750mAh capacity and approximately 16g weight, the 503048 battery delivers a practical balance between runtime and portability.

• Provides longer operating time compared with smaller capacity batteries.

• Maintains lightweight device designs.

• Improves portability and user comfort.

Stable Charging And Discharging Performance

The battery supports standard 0.5C–1C charging and discharging rates, providing stable energy output for everyday electronic applications.

• Compatible with standard LiPo charging systems.

• Maintains consistent power delivery during operation.

• Suitable for regular charging cycles.

Part 4. What Factors Affect The Lifespan Of A 503048 Battery?

The lifespan of a lithium polymer battery depends on charging methods, operating temperature, usage frequency, and storage conditions. Under standard conditions, the UFX503048 battery supports approximately 300 charge and discharge cycles.

Charging Conditions

Proper charging management helps maintain battery performance and extend service life.

• Use a compatible 4.2V charging system.

• Avoid overcharging conditions.

• Maintain recommended charging current levels.

• Use suitable protection circuits for safe operation.

Operating Temperature

Temperature conditions directly affect lithium battery performance and cycle life.

• Charging temperature: 0°C to 45°C.

• Discharging temperature: -20°C to 60°C.

Operating outside recommended temperature ranges may reduce battery capacity, shorten lifespan, and affect safety performance.

Storage Environment

Proper storage helps maintain battery quality during transportation or periods of inactivity.

• Store within -20°C to 45°C temperature conditions.

• Avoid long-term exposure to extreme environments.

• Maintain appropriate charge levels during storage.

Part 5. Why Are Battery Certifications Important?

Battery certifications verify safety, reliability, and compliance before lithium batteries are used in commercial products. Certified batteries help manufacturers reduce development risks and simplify global market approval.

• KC – Meets Korean battery safety requirements.

• CB – Supports international electrical safety recognition.

• UN38.3 – Required for lithium battery transportation testing.

• UL1642 – Verifies lithium polymer cell safety performance.

• RoHS – Ensures compliance with hazardous substance restrictions.

Certified LiPo batteries improve product reliability, support safer transportation, and help manufacturers meet regulatory requirements in different markets.

Part 6. Applications Of The 503048 750mAh LiPo Battery

The compact size, lightweight design, and stable performance of the 503048 battery make it suitable for a wide range of portable electronic applications.

Wearable Devices

The slim profile and lightweight construction make it ideal for:

• Smart watches.

• Fitness trackers.

• Smart wearable accessories.

IoT Electronics

The battery provides reliable power for compact connected devices, including:

• Smart sensors.

• Wireless monitoring devices.

• IoT hardware products.

Portable Consumer Electronics

Common applications include:

• Wireless devices.

• Portable gadgets.

• Compact electronic equipment.

Medical Electronics

The stable output and compact structure support applications such as:

• Portable healthcare devices.

• Monitoring equipment.

• Small medical electronics.

Part 7. Custom 503048 LiPo Battery Solutions From Ufine

Different electronic products require different battery configurations. Ufine provides customized lithium polymer battery solutions to help engineers achieve the ideal balance between size, capacity, and performance.

• Customized battery wires and connectors.

• Protection circuit integration.

• Battery size and structure customization.

• Custom packaging solutions.

• Prototype development and mass production support.

With more than 17 years of battery manufacturing experience, Ufine supports customers from initial battery design to reliable production. The UFX503048 3.7V 750mAh LiPo battery is available for prototypes, OEM projects, and customized battery applications.