Li-ion Double Battery Charger – Dual Slot 18650 Lithium-Ion Battery Charger
The Li-ion Double Battery Charger is a compact and efficient solution for safely charging two 18650 lithium-ion batteries at once. Designed with built-in protection and indicator LEDs, it’s ideal for makers, DIY enthusiasts, and anyone working with rechargeable batteries in robotics, IoT, or portable electronics projects.
Key Features:
Dual 18650 Battery Charging
Supports simultaneous charging of two 3.7V Li-ion 18650 cells.
Overcharge & Short-Circuit Protection
Safeguards batteries and devices with built-in smart charging circuitry.
LED Charging Indicators
Red LED for charging, green for full charge—easy battery status monitoring.
Compact & Portable Design
Lightweight and easy to carry—great for workbenches or field use.
USB Input Powered
Works with USB wall adapters, power banks, or computer USB ports (5V input).
 
Applications:
Charging 18650 cells for flashlights, DIY projects, and RC devices
Power banks and battery packs
Robotics and embedded systems
IoT and low-power electronics
Portable DIY electronics and wearables
 
Package Includes:
1 × Dual 18650 Li-ion Battery Charger 
 
Specifications:
Battery Type Supported: 18650 Li-ion (3.7V)
Number of Slots: 2
Input Voltage: 5V DC (via micro USB or Type-C, depending on model)
Charging Current: 1A per channel (max)
Output Voltage (Battery): 4.2V (full charge)
Protection: Overcharge, short-circuit, reverse polarity
Indicators: Red = Charging, Green = Full
 
Dimensions:
Length: 90 mm
Width: 45 mm
Height: 25 mm
 
Weight: 35 g
 
People Also Search For:
18650 battery charger dual slot
Li-ion USB battery charger
3.7V lithium battery charger
Dual cell 18650 charging module
18650 power bank charger
Smart charger for Li-ion cells
Portable lithium battery charger
18650 USB charging dock