3.7V 5Ah Li-ion Battery Pack with 18650 Cells

Product Overview:
This 3.7V 5Ah lithium-ion battery pack is constructed using high-quality 18650 cells to deliver reliable, rechargeable power for a variety of portable electronic devices. Its compact size and high energy density make it ideal for applications such as audio players, handheld gadgets, and DIY electronics.

Technical Specifications

• Battery Type: Lithium-ion (Li-ion)

• Cell Format: 18650 cylindrical cells

• Nominal Voltage: 3.7V

• Capacity: 5Ah (5000mAh)

• Full Charge Voltage: 4.2V

• Energy: 18.5Wh

• Discharge Current: Suitable for low to medium power devices

• Cycle Life: 300 – 500+ charge cycles

• Dimensions: Varies based on pack configuration

• Weight: Approx. 100–150 grams (depends on cells and pack design)

Features

• High-capacity rechargeable battery pack

• Stable voltage output for consistent device performance

• Built using reliable 18650 cells known for quality and longevity

• Compact and lightweight design

• Low self-discharge rate for extended standby

• Optional built-in protection circuit (PCM/BMS) for safety and battery management

Applications

• Portable audio players and media devices

• Wireless communication devices

• Handheld electronics and gadgets

• DIY projects and custom battery packs

Charging Guidelines

• Use a compatible lithium-ion battery charger with CC/CV charging

• Charge voltage: 4.2V per cell

• Recommended charge current: 0.5C to 1C (2.5A to 5A)

• Typical charge time: 2 to 5 hours depending on charger

Safety Instructions

• Avoid short circuits and mechanical damage

• Use only compatible chargers

• Do not expose battery pack to extreme heat or fire

• Store in a cool, dry environment when not in use