USB Charger for 7.4V LiPo Battery

Still using a big, bulky, traditional power adapter to charge your lithium battery? DFRobot provides you with a compact and efficient 7.4V lithium battery USB charger, only the size and weight of an ordinary Gravity sensor. With just a mobile phone AC adapter (or power bank) and an Android data cable, you can safely and efficiently charge the 7.4V lithium battery up to 1A, which commonly used in various robots and motor drivers. The light-weight and micro USB interface features make it ideal for outdoor applications. In addition to serve as a charger, it can also be embedded in a variety of 7.4V lithium battery-powered projects, adding a USB charging function to it, eliminating the need for battery swapping and the use of traditional bulky power adapters.

Board Overview

Connection Diagram

High efficiency boost type USB charger, designed for 7.4 lithium battery

Charge input and battery port reserved pads for easy modification and measurement

All-round protection of battery and power supply

Multifunction LED status indicator, system status at a glance

USB ESD shell

Robots and motor drivers

Lithium battery charger

Charge input voltage (USB IN)：3-6V (5V, typical for USB IN)

Battery input (BAT IN): 7.4V 2s cells Li-polymer/Li-ion battery

Maximum charge current: 1A trickle charging, constant current, constant voltage three phases charging

Charge cutoff voltage: 8.4V±1%

Charge efficiency: >90%

Protections
 BAT IN: over charge/reverse connection protection
 USB IN: adaptive input current limitation, over heat/reverse connection protection

Operation temperature: -40℃～85℃

Dimension: 28.0mm*37.0mm/ 1.1 * 1.46 inches

Product wiki

USB Charger for 7.4V LiPo Battery x1

14*14*7mm Aluminum cooling fin x1

14*14*0.5mm Thermal conductive silicone pad x1