Li Polymer Battery 3.7V 501015 50mAh with PCB
Summary of 501015 Battery Li Ion
The Li-Polymer Battery 501015 50mAh with PCB is a lightweight, soft-pack lithium-polymer cell designed for ultra-compact and low-power devices. Thanks to its aluminum-plastic pouch (soft-pack) structure, it offers significant weight reduction, high flexibility, and excellent safety performance. With more than 500 deep cycles retaining over 72mAh, integrated multi-level protection circuitry, and a tiny 501015 form factor, this battery is ideal for Bluetooth headsets, wearables, sensors, micro-recorders, miniature remote controllers, and other space-limited electronics.
501015 Li Ion Polymer Battery Technical Information
Model: Battery 501015
Battery Type: Li-ion Polymer Battery
Nominal Capacity: 50mAh
Nominal Voltage: 3.7V
Energy: 0.185Wh
Energy Density: 92.5Wh/kg
Charge Cut-off Voltage: 4.2V
Discharge Cut-off Voltage: Typically 3.0V, Minimum 2.75V
Standard Charge Current: 0.2C (10mA)
Max Charge Current: 1C (50mA)
Standard Discharge Current: 0.2C (10mA)
Max Continuous Discharge Current: 1C (50mA)
Max Peak Discharge Current: 2C (100mA)
Internal Resistance: Less than 350mΩ
Cycle Life: More Than 500 Times
Dimensions: 5.0 × 12 × 20 mm
Weight: 2g
Charge Temperature Range: 0°C to 45°C
Discharge Temperature Range: -20°C to 65°C
Storage Temperature Range:
- -20℃~25℃: More than 12 months
- -20℃~45℃: Less than 3 months
- -20℃~60 ℃: Less than 1 month
Key Features – 501015 Battery Li-polymer
🎈 Ultra-Lightweight Soft-Pack (Aluminum-Plastic Pouch) Design
The battery is made using a soft-pack aluminum-plastic film, dramatically reducing weight while maintaining durability and safety.
Benefits of soft-pack Li-Po technology:
Significantly lighter than metal-case lithium-ion cells
Flexible and resistant to impact deformation
Better heat dissipation and safety performance
Ideal for wearable and miniaturized applications
📏 Compact 501015 Size for Highly Limited Spaces
With dimensions of 5.0 × 10 × 15 mm, this micro-sized cell fits extremely compact devices where traditional batteries cannot. Its tiny footprint expands design possibilities for next-generation electronics.
🔁 High Cycle Life — 500 Cycles Retaining Over 72mAh
Despite its compact size, the 501015 Li-Po battery maintains excellent longevity. After 500 deep charge–discharge cycles, the capacity remains above 72mAh, far exceeding industry standards for micro batteries. Consistent performance over years of use, reduce long-term maintenance.
🛡️ Integrated Protection PCB for Full Safety
The built-in Protection Circuit Board (PCB) ensures multi-level safety management suitable for consumer devices. This makes the battery reliable even in compact, sealed, or wearable products.
Protection functions include:
Over-charge protection
Over-discharge protection
Short-circuit protection
Over-temperature protection
Over-current protection
📡 Optimized for Ultra-Low-Power Miniature Applications
The 50mAh 501015 Li-Po battery is engineered for devices with extremely low daily power consumption. Its combination of small size, high safety, and stable output makes it one of the most versatile miniature Li-Po cells.
Typical applications:
🎧 Bluetooth earphones & mini audio devices
⌚ Smart watches, fitness trackers, smart jewelry
📡 Low-power wireless sensors
🎙️ Mini recorders, micro MP3 players
🎮 Micro remote controllers, mini toys
🧭 Micro IoT modules and tracking nodes
❓ Frequently Asked Questions (FAQ)
Q1: What is li polymer battery?
A: Lithium Polymer (Li-Po) battery is a rechargeable cell using a polymer electrolyte which enables a flexible, lightweight soft-pack design and high energy density for portable electronics.
Q2: Is the battery safe for wearable devices?
A: Yes. The soft-pack structure and PCB offer enhanced safety, making it suitable for sealed or skin-contact electronics.
Q3: What voltage to charge 3.7v battery
A: The standard maximum voltage to charge a nominal 3.7V li polymer battery is 4.2V. It is crucial not to exceed this voltage limit to prevent cell damage and potential safety hazards.
Q4: Can it be used in high-power equipment?
A: No. This battery is intended for low-power miniature devices, not for high-current or motor-driven systems.
Q5: Can the battery be customized?
A: Yes. Wire length, connectors, PCM, and OEM labeling can be customized depending on project requirements.
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