Mini 500mA PWM Solar LiPo Charger Module based on the CN3065 is a compact solar battery charging module designed for charging single-cell 3.7V LiPo batteries from a 4.4V to 6V solar panel or Micro-USB power source. BDTronics offers this CN3065 solar charger module in Bangladesh for portable solar electronics, IoT devices, wireless sensors, energy harvesting projects, and DIY battery-powered circuits. BDTronics CN3065 charger modules provide a simple way to add rechargeable LiPo battery charging to small solar-powered electronic projects while providing automatic charging control and LED charge-status indication.

The module supports a charging current of up to 500mA and is designed specifically for single-cell LiPo batteries. It can be connected to a suitable small solar panel or USB power source at the input and a 3.7V LiPo battery through the battery connector. BDTronics makes this compact CN3065 module suitable for projects where space, simple wiring, and solar charging capability are important.

Features:

• CN3065 single-cell lithium battery charge controller

• PWM-based LiPo charging control

• Up to 500mA charging current

• Designed for single-cell 3.7V LiPo batteries

• 4.4V to 6V input voltage range

• Suitable for small solar panels

• Micro-USB input for convenient charging from USB power

• Solar and USB input options

• Compact 45mm × 20mm × 9mm module

• Built-in charging status LEDs

• Red LED indicates charging

• Green LED indicates charging completed

• Short-circuit protection

• Thermal regulation

• Suitable for portable solar-powered electronics

• Useful for IoT and wireless sensor projects

• Suitable for low-power embedded systems

• Suitable for DIY solar energy harvesting projects

• Simple battery connection through 2-pin JST or PH2.0 connector

• Suitable for small rechargeable LiPo battery projects

• Available from BDTronics for electronics and solar projects in Bangladesh

Specifications:

• Product Type: Mini Solar LiPo Charger Module

• Charging Controller IC: CN3065

• Charging Method: PWM

• Maximum Charging Current: 500mA

• Input Voltage: 4.4V to 6.0V

• Input Source: Solar panel or Micro-USB

• Battery Type: Single-cell LiPo

• Battery Nominal Voltage: 3.7V

• Battery Configuration: 1S

• Battery Connector: 2-pin JST or PH2.0

• USB Connector: Micro-USB

• Charging Indicator: Red LED

• Fully Charged Indicator: Green LED

• Short-Circuit Protection: Yes

• Thermal Regulation: Yes

• Operating Temperature: -25°C to +85°C

• Operating Humidity: 5% to 95% RH

• Module Dimensions: 45mm × 20mm × 9mm

• Charging Current: Up to 500mA

• Seller: BDTronics

• Market: Bangladesh

Solar Panel Requirements:

• Use a solar panel with an output voltage within the module's 4.4V to 6V input range.

• A regulated or appropriately sized solar panel can be used depending on the required charging performance.

• Solar panel output should be checked under actual sunlight conditions before connecting it to the module.

• A higher-rated solar panel does not necessarily mean faster charging because the module's charging current is limited to approximately 500mA.

• Solar charging speed depends on panel voltage, available sunlight, panel power, battery state of charge, and connected load.

• Do not apply more than 6V to the input.

Battery Compatibility:

• Designed for a single 3.7V nominal LiPo battery.

• Battery configuration: 1S.

• Suitable for rechargeable lithium polymer batteries with an appropriate charging specification.

• Verify the battery's recommended charging current before connecting it.

• The battery should be capable of accepting up to 500mA charging current.

• Do not connect 2S or higher-voltage LiPo battery packs to the battery output.

• Do not use this module as a charger for LiFePO4, Li-ion multi-cell, NiMH, NiCd, lead-acid, or other battery chemistries unless specifically designed for the module's charging profile.

Charging Current:

• Maximum charging current: approximately 500mA.

• A 500mA charging current corresponds to 1C for a 500mAh battery.

• For a 1000mAh battery, 500mA is approximately 0.5C.

• For a 2000mAh battery, 500mA is approximately 0.25C.

• Actual solar charging current can be lower than 500mA depending on sunlight and solar panel output.

• Always ensure the battery manufacturer's recommended charge current is not exceeded.

Charge Status Indicators:

• Red LED: Battery charging

• Green LED: Charging completed

• LED indicators provide a quick visual indication of charging status during normal operation.

How to Use:

• Connect a suitable 4.4V to 6V solar panel to the module's input.

• Alternatively, connect a suitable Micro-USB power source.

• Connect a single-cell 3.7V LiPo battery to the battery connector.

• Check battery polarity carefully before powering the module.

• Place the solar panel where it receives sufficient sunlight for charging.

• The CN3065 charging controller manages the charging process automatically.

• Observe the red LED during charging.

• When charging is complete, the indicator changes to green.

• Disconnect the battery or input source when required by your project design.

• If powering a load simultaneously with the battery, make sure the total load current and solar input power are appropriate for the application.

Using Solar Charging with a Load:

• A load may be connected in parallel with the battery for certain low-power applications.

• The available solar energy is shared between the connected load and battery charging.

• If the load consumes more power than the solar panel can provide, the battery may continue discharging even while the solar panel is connected.

• For reliable solar-powered operation, select the solar panel and battery capacity according to the actual load.

• For sensitive applications, evaluate the power-path behavior of the complete circuit before permanent installation.

Typical Applications:

• Small solar-powered electronics

• Portable solar devices

• Solar sensor nodes

• Wireless sensor systems

• IoT devices

• Environmental monitoring devices

• Remote monitoring electronics

• DIY solar projects

• Energy harvesting projects

• Battery-powered Arduino projects

• Low-power ESP32 projects

• Small embedded systems

• Solar-powered data loggers

• Portable electronic devices

• Solar-powered wearables

• Small automation projects

• Remote electronic sensors

• Educational electronics projects

• Maker projects

• DIY rechargeable LiPo devices

Example Project Setup:

A basic solar-powered sensor project can be assembled using:

• 4.4V to 6V solar panel

• CN3065 Mini Solar LiPo Charger Module

• 3.7V single-cell LiPo battery

• Low-power microcontroller or sensor

• Suitable 2-pin JST or PH2.0 battery connection

• Appropriate wiring

During sunlight, the solar panel supplies power to the CN3065 module and charges the LiPo battery. When solar power is unavailable, the battery can supply power to the connected project according to the project's electrical design.

Important Usage Instructions:

• Input voltage must remain between 4.4V and 6V.

• Do not exceed 6V input voltage.

• Use only a single-cell 3.7V LiPo battery.

• Check battery polarity before connection.

• Do not short the input or battery terminals.

• Do not connect a battery with reversed polarity.

• Confirm that the battery can safely accept the module's maximum charging current.

• Do not connect multiple LiPo cells in series.

• Use suitable wiring and connectors for the charging current.

• Keep the module away from excessive moisture and physical damage.

• Actual solar charging performance depends heavily on sunlight intensity and solar panel characteristics.

Package Includes:

• 1 × CN3065 Mini 500mA PWM Solar LiPo Charger Module

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