The Dual Slot Li-ion Battery Charger is a reliable, dual-channel smart battery charging module designed to safely charge 3.7V cylindrical lithium-ion rechargeable batteries.
The Dual Slot Li-ion Battery Charger is a reliable, dual-channel smart battery charging module designed to safely charge 3.7V cylindrical lithium-ion rechargeable batteries. Featuring independent charging channels, this charger can charge one or two Li-ion batteries simultaneously without cross-channel interference. Built with advanced charge management circuitry, the charger employs a constant-current / constant-voltage (CC/CV) charging algorithm to optimize battery life and performance. Integrated LED status indicators provide clear visual feedback during operation (red for charging, green for fully charged or standby). Built-in protection features include reverse polarity protection, over-charge protection, and short-circuit protection to guard both the charger and batteries against electrical faults. This dual-slot charger is widely used for powering 18650 cells in DIY power banks, robotics projects, flashlight packs, ESP32/Arduino battery shields, and wireless IoT devices. Standardized slots accommodate common Li-ion cell sizes including 18650, 16340, 14500, and 26650 cells.
| Charger Type | Dual-Slot (2-Channel) Li-ion Battery Charger |
|---|---|
| Compatible Battery Types | 3.7V / 4.2V Cylindrical Li-ion / LiPo Cells (18650, 16340, 14500, 26650) |
| Input Voltage | 5V DC (Micro-USB / USB Type-C) or AC 100–240V (depending on variant) |
| Output Voltage | 4.2V DC (±1% termination voltage) |
| Output Current | 500mA to 1000mA per slot |
| Dual LED status indicators (Red | Charging, Green: Fully Charged / Standby) |
What is the operating voltage?
5V DC (Micro-USB / USB Type-C) or AC 100–240V (depending on variant).
Is it compatible with Arduino and ESP32?
Yes. It works with Arduino, ESP32, Raspberry Pi projects.
Can I buy the Dual Slot Li-ion Battery Charger in Kanpur?
Yes – buy online with delivery across India, or pick it up from the iTechBuilders store, Damodar Nagar, Kanpur.
