CN3065 Lithium Battery Solar Charging Board 5V 500mA USB Panel Charger

Description

🔋 CN3065 Lithium Battery Solar Charging Board 5V 500mA USB / Panel | AuscomTech

The CN3065 Lithium Battery Solar Charging Board is a compact and efficient charging module designed specifically for single-cell lithium batteries powered by solar panels, USB sources, or DC adapters.

Built around the CN3065 intelligent solar charging IC, this board dynamically adjusts the charging current based on input voltage conditions, making it ideal for low-current and unstable power sources such as small solar panels. Its minimal external component design, low quiescent current, and wide operating temperature range make it well suited for embedded, portable, and renewable-energy projects.

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⭐ Key Features

☀️ Optimised Solar Charging Control
CN3065 intelligently adjusts charging current based on input voltage, maximising energy harvesting from solar panels.

🔌 Wide Input Compatibility
Supports DC 4.4–6V input from solar panels, USB power, or regulated wall adapters.

⚡ Up to 500mA Charging Current
Provides up to 500mA charge current, adjustable via an external resistor to suit battery and power source limits.

🧠 Integrated Power Transistor
No external power transistor, blocking diode, or sense resistor required, simplifying circuit design.

🔋 Low Power Sleep Mode
Automatically enters ultra-low power sleep mode (<3µA) when input voltage is absent to preserve battery life.

🧱 Compact & Lightweight Design
Small PCB footprint ideal for space-constrained and portable applications.

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📊 Technical Specifications

Charging IC: CN3065
Battery Type: Single-cell lithium-ion / lithium-polymer (3.7V nominal)
Input Voltage Range: DC 4.4–6V
Maximum Charging Current: 500mA (resistor adjustable)
Quiescent Current (Sleep): < 3µA
Operating Temperature: −40°C to +85°C
Operating Humidity: 5%–95% RH
Board Dimensions: 45 × 20 × 9 mm

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⚠️ Important Notes

• Designed for single-cell lithium batteries only
• Charging current must be set appropriately for the battery and power source
• Solar panel voltage should remain within the specified input range
• Not a boost converter — output is battery voltage only

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🧩 Compatible With

• 3.7V Li-ion and LiPo batteries
• Small solar panels (5V nominal)
• USB power sources
• Wall adapters (regulated 5V)
• ESP32 / ESP8266 battery-powered projects
• Arduino, STM32, RP2040 low-power systems

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⚙️ Typical Applications

• Solar-powered sensor nodes
• Battery-powered IoT devices
• Remote data loggers
• Environmental monitoring systems
• DIY renewable energy projects
• Portable electronics and prototypes

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📦 Package Includes

• 1 × CN3065 Lithium Battery Solar Charging Board