The Solar Lipo Charger (3.7V) is purposefully crafted for single lithium batteries with a voltage rating of 3.7V. It boasts intelligent charging capabilities along with robust input reverse polarity protection to ensure safe and efficient operation. Offering a maximum charging current of 500 milliamperes, this charger is not only powerful but also remarkably easy to connect. When paired with both solar and lithium batteries, it facilitates the swift creation of a dependable solar power system.

 

Package Includes:

• 1x Solar Lipo Charger (3.7V)

 

Features:

• Single Lithium Battery Charging: Tailored for charging single lithium batteries with a 3.7V rating, ensuring compatibility with a variety of devices.
• Intelligent Charging: Utilizes cutting-edge technology to optimize the charging process, prolonging battery life and enhancing overall performance.
• Input Reverse Polarity Protection: Incorporates robust protection against accidental reverse polarity, safeguarding both your equipment and the charger itself.
• Maximum Charging Current: With a maximum charging current of 500mA, it charges your batteries efficiently and rapidly.
• User-Friendly Connection: Designed with simplicity in mind, making the connection process straightforward and accessible to all users.
• Solar and Lithium Battery Compatibility: Versatile enough to be used with both solar panels and lithium batteries, offering flexibility in your power setup.
• Swift Solar Power System Creation: Enables you to swiftly build a reliable solar power system, reducing your dependence on traditional power sources and harnessing sustainable energy.

 

Description:

the CN3083 IC-powered solar charger module, meticulously engineered to cater to the precise needs of single 3.7V lithium batteries. This versatile module is designed to excel across a wide spectrum of applications, setting itself apart with its intelligent charging capabilities. Leveraging advanced technology, it not only optimizes the charging process but also places a strong emphasis on safety and efficiency. What truly distinguishes this module is its robust input reverse polarity protection, functioning as an unwavering guardian against potential mishaps, ensuring user confidence remains steadfast. Additionally, boasting a formidable maximum charging current of 500 milliamperes, this module doesn't just deliver power effectively; it does so with exceptional user-friendliness. Whether you're a seasoned solar power enthusiast or a newcomer to the field, connecting this module is a straightforward and hassle-free endeavor. Furthermore, when combined with both solar panels and lithium batteries, it empowers you to swiftly construct a reliable solar power system, harnessing the abundant energy resources of the sun to fulfill your diverse energy requirements with ease.

 

Principle of Work:

The CN3083 IC-powered solar charger module operates internally with a focus on efficiency, safety, and user-friendliness:

• Input Voltage (4.4 ~ 6V): This module is compatible with a range of input voltages, typically supplied by solar panels or other power sources within the specified range.
• Charging Current (500mA Max): The module can deliver a maximum charging current of 500 milliamperes. The actual current may vary based on the capability of the connected solar battery.
• Charging Cutoff Voltage (4.2V): When the connected lithium battery reaches a voltage of 4.2V, the charging process is intelligently terminated, preventing overcharging and protecting the battery.
• Operating Temperature (-40 ~ 85℃): The module is designed to operate reliably in a wide temperature range, from extremely cold conditions to high-temperature environments, ensuring its functionality in various climates.
• Requisite Battery (3.7V lithium battery): This module is specifically designed for use with 3.7V lithium batteries. Users should take note of the maximum permissible charging current for the lithium battery to ensure safe operation.

• Charging Indicator: The module features LED indicators to communicate its status:

  • No Battery: When there is no connected battery, the Red LED flashes to indicate the absence of a battery.
  • Charging: During the charging process, the Red LED remains illuminated.
  • Done: Once the charging process is complete, the Green LED turns on, signaling that the battery is fully charged.

This internal operation of the CN3083 IC-powered solar charger module combines intelligent charging, safety features, and user-friendly indicators to provide a reliable and efficient solution for harnessing solar energy to charge 3.7V lithium batteries.

Pinout of the Board:

Input Connections:

 

• PWR IN (Power Input):
  • Voltage Range: This terminal accepts a power input ranging from 4.4V to 6V.
  • Connection: It is designed to be connected to a solar battery as the power source. Ensure that the solar battery's output voltage falls within the specified range (4.4V to 6V) for proper operation.
• BAT (Battery Input):
  • Battery Type: Connect a 3.7V lithium battery to this terminal. This lithium battery serves as the energy storage component of the system, storing the electricity generated from the solar input.
• VOUT (Output):
  • Output Voltage: This terminal provides the output for the 3.7V lithium-ion battery. You can connect your electrical equipment or devices to this terminal to power them using the stored energy from the lithium battery.
  • Charging Indicator:
  • No Battery (Green LED ON, Red LED Flashing): When there is no lithium battery connected to the BAT terminal, the green LED remains illuminated, and the red LED flashes intermittently. This indicates the absence of a connected battery.
  • Charging (Red LED ON): During the charging process, only the red LED is illuminated. This serves as an indicator that the lithium battery is actively charging.
  • Charging Complete (Green LED ON): Once the charging process is finished and the lithium battery is fully charged, only the green LED remains illuminated. This signals that the charging is complete and the system is ready for use.

 

Applications:

1. Portable Solar Chargers: Use the module to create portable solar chargers for smartphones, tablets, or other small electronic devices, allowing users to charge their devices on the go using solar power.
2. Solar-Powered Gadgets: Integrate the module into various solar-powered gadgets such as solar lanterns, solar radios, or solar-powered weather stations, providing a sustainable source of energy.
3. Remote Monitoring Systems: Implement the module in remote monitoring systems, enabling these systems to operate in off-grid locations by harnessing solar energy to power sensors, cameras, and communication devices.
4. Solar-Powered Lighting: Design solar-powered lighting solutions, including garden lights, pathway lights, or camping lanterns, that charge during the day and illuminate the night using stored energy.
5. Environmental Data Collection: Create solar-powered environmental data collection systems for research purposes, allowing for continuous data collection in remote or environmentally sensitive areas.
6. Solar-Powered IoT Devices: Develop solar-powered Internet of Things (IoT) devices like weather stations, soil moisture sensors, or wildlife trackers that can operate autonomously in outdoor environments.
7. Off-Grid Solar Systems: Use the module to build small-scale off-grid solar power systems for cabins, RVs, boats, or remote cabins, providing an independent source of electricity.
8. Solar Education Kits: Incorporate the module into educational kits for teaching students about renewable energy and solar power systems, making learning hands-on and engaging.
9. Emergency Power Backup: Create solar-powered emergency backup systems for critical equipment or communications during power outages or natural disasters.
10. Solar-Powered Prototypes: Utilize the module in the prototyping phase of product development for various electronic devices, allowing for testing and demonstration of solar charging capabilities.

 

Circuit:

Material:

• Solar Panel (5v 260mA)
• [Solar Charger]
• 3.7V Polymer Lithium Ion Battery - 1000mAh

 

Library: 

No circuit needed.

 

Code:

No code needed

 

Technical Details:

• Input Voltage: 4.4~6V
• Charging Current: 500mA Max (Varies based on solar battery supply capability)
• Charging Cutoff Voltage: 4.2V
• Operating Temperature: -40~85℃
• Module Size: 33mm33mm12mm
• Compatible Battery: 3.7V lithium battery (Note the maximum permissible charging current of the lithium battery)
• Charging Indicator: Red LED (Charging), Green LED (Done), Red LED Flashing (No Battery)

 

Resources:

• Wiki doc
• Schematic

 

Comparisons:

We will compare the CN3083 IC-powered solar charger module with the "Solar Power Manager Micro" module based on their features and applications:

CN3083 IC-powered Solar Charger Module from dfrobot:

• Input Voltage Range: 4.4V to 6V
• Maximum Charging Current: 500mA
• Battery Compatibility: 3.7V lithium battery
• MPPT: No
• Battery and Output Protections: Overcharge, over-discharge, reverse connection protections
• Output: 3.7V lithium-ion battery output
• Charging Indicator: LED indicators (Red for charging, Green for charging complete)
• Applications: Portable solar chargers, solar-powered gadgets, remote monitoring systems, solar-powered lighting, environmental data collection, solar-powered IoT devices, off-grid solar systems, solar education kits, emergency power backup, solar-powered prototypes

Solar Power Manager Micro Module from dfrobot:

• Input Voltage Range: 1V to 3V (small size solar panels)
• Maximum Charging Current: 70mA (solar) or 100mA (USB)
• Battery Compatibility: 3.7V lithium battery
• MPPT: Yes (maximum power point tracking)
• Battery and Output Protections: Overcharge, over-discharge, reverse connection protections
• Output: 3.3V 90mA regulated output
• Charging Indicator: Not specified
• Applications: Low-power wireless sensors, IoT devices, solar-powered toys, wireless sensor networks, BLE iBeacons

Comparison:

• Input Voltage Range: The CN3083 module has a higher input voltage range (4.4V to 6V) compared to the Solar Power Manager Micro (1V to 3V). This makes the CN3083 module suitable for larger solar panels with higher voltage output.
• Maximum Charging Current: The CN3083 module offers a higher maximum charging current of 500mA compared to the Solar Power Manager Micro's 70mA (solar) or 100mA (USB). This means the CN3083 module can charge the battery faster.
• MPPT: The Solar Power Manager Micro features MPPT (maximum power point tracking), allowing it to maximize solar energy conversion even under weak sunlight. The CN3083 module does not specify MPPT functionality.
• Output: The CN3083 module provides a 3.7V lithium-ion battery output, while the Solar Power Manager Micro offers a 3.3V 90mA regulated output. The choice between these modules would depend on the specific voltage requirements of the connected devices.
• Applications: The CN3083 module has a broader range of applications, including portable chargers, solar-powered lighting, and various IoT devices. In contrast, the Solar Power Manager Micro is tailored for low-power wireless sensors and IoT applications.