3.7V 800mAh Rechargeable Lithium-Ion Battery – Compact Power Cell

The 3.7V 800mAh Rechargeable Lithium-Ion Battery – Compact Power Cell is a lightweight, high-performance rechargeable battery designed to provide reliable and efficient power for a wide range of portable electronic devices and embedded systems. Built using advanced Lithium-Ion (Li-Ion) technology, this battery offers high energy density, stable voltage output, low self-discharge, and long service life, making it an excellent choice for modern battery-powered applications.

With a nominal voltage of 3.7V and a capacity of 800mAh, this battery delivers consistent power for low- to medium-power devices while maintaining a compact and lightweight form factor. Its efficient energy storage capability allows electronic devices to operate for extended periods, making it suitable for portable equipment where space and weight are critical considerations.

Manufactured using premium-quality lithium-ion cells, the battery provides reliable electrical performance, low internal resistance, and excellent charge-discharge efficiency. It can be recharged hundreds of times using a compatible Lithium-Ion battery charger, reducing replacement costs and minimizing environmental impact compared to disposable batteries.

The compact construction allows easy integration into portable electronic products, embedded systems, and custom battery-powered projects. Its stable voltage output ensures dependable operation of connected electronic circuits throughout most of the discharge cycle.

The 3.7V 800mAh Rechargeable Lithium-Ion Battery is widely used in Arduino projects, ESP32 development boards, ESP8266 systems, Raspberry Pi accessories, IoT devices, wearable electronics, wireless sensors, Bluetooth devices, portable medical equipment, GPS trackers, mini drones, robotics, smart home devices, LED lighting systems, electronic toys, portable audio devices, embedded systems, security devices, educational electronics, and DIY projects.

Whether you are developing a portable electronic product, replacing an existing rechargeable battery, building an IoT device, or designing a custom embedded system, this battery provides a dependable, compact, and long-lasting power solution.

Working Principle

A Lithium-Ion battery stores electrical energy through reversible electrochemical reactions between its positive and negative electrodes.

During charging, lithium ions move from the positive electrode to the negative electrode, storing electrical energy. During discharge, the ions move back to the positive electrode, producing electrical current that powers the connected device.

The battery provides a nominal output voltage of 3.7V, reaches approximately 4.2V when fully charged, and should generally not be discharged below 3.0V to maximize battery life. Charging should always be performed using a compatible Lithium-Ion battery charger.

Key Features

• Nominal voltage: 3.7V

• Capacity: 800mAh

• Rechargeable Lithium-Ion battery

• High energy density

• Stable voltage output

• Compact and lightweight design

• Low self-discharge rate

• Long charge-discharge cycle life

• Low internal resistance

• Reliable power delivery

• Fast charging capability with compatible charger

• Environmentally friendly rechargeable solution

• Durable construction

• Suitable for portable electronic devices

• Easy integration into compact designs

Applications

The 3.7V 800mAh Rechargeable Lithium-Ion Battery is widely used in:

• Arduino projects

• ESP32 development

• ESP8266 projects

• Raspberry Pi accessories

• IoT devices

• Robotics

• Wearable electronics

• Bluetooth devices

• Wireless sensors

• GPS trackers

• Mini drones

• Portable medical equipment

• Smart home devices

• LED lighting systems

• Electronic toys

• Portable audio devices

• Embedded systems

• Security devices

• Educational electronics

• DIY electronics projects

Specifications

• Product Type: Rechargeable Lithium-Ion Battery

• Battery Chemistry: Lithium-Ion (Li-Ion)

• Nominal Voltage: 3.7V

• Capacity: 800mAh

• Rechargeable: Yes

• Cell Configuration: Single Cell (1S)

• Fully Charged Voltage: 4.2V

• Recommended Minimum Voltage: Approximately 3.0V

• Charging Method: Compatible Lithium-Ion Battery Charger

• Application: Portable electronic devices

Package Includes

• 1 × 3.7V 800mAh Rechargeable Lithium-Ion Battery

Safety Precautions

• Charge only with a compatible Lithium-Ion battery charger.

• Do not overcharge or over-discharge the battery.

• Avoid short-circuiting the battery terminals.

• Do not puncture, crush, or expose the battery to fire or excessive heat.

• Store the battery in a cool, dry place away from direct sunlight.

• Do not use the battery if it becomes swollen, damaged, or overheated.

• Observe correct polarity during installation.

• Keep away from water and conductive materials.