USB Charger for 7.4V LiPo Battery

A compact and efficient USB charger designed specifically for 7.4V lithium polymer and lithium-ion batteries. Simply connect a standard phone charger or power bank via micro USB to safely charge 2S battery packs at up to 1A.

This charger is perfect for robotics projects, motor drivers, and any portable application using 7.4V LiPo batteries. The small form factor allows it to be embedded directly into your project, adding USB charging capability without bulky external adapters.

Key Features

• High Efficiency Boost Charging – Over 90% charge efficiency for fast, efficient power transfer
• Smart 3-Phase Charging – Trickle charge, constant current, and constant voltage phases for optimal battery health
• Comprehensive Protection – Over-charge protection, reverse connection protection, adaptive current limiting, and thermal protection
• LED Status Indicator – Clear visual feedback on charging status
• USB ESD Protection – Built-in electrostatic discharge protection on the USB shell
• Compact Design – Just 28mm × 37mm, about the size of a Gravity sensor

Specifications

• USB Input Voltage – 3-6V (5V typical)
• Battery Type – 7.4V 2S Li-polymer or Li-ion cells
• Max Charge Current – 1A
• Charge Cutoff Voltage – 8.4V ±1%
• Charge Efficiency – >90%
• Operating Temperature – -40°C to 85°C
• Dimensions – 28mm × 37mm

Ideal For

• Robots and motor drivers using 7.4V batteries
• Portable electronics projects
• Adding USB charging to battery-powered builds
• Outdoor and field applications

Resources

• Product Wiki