# USB Charger for 7.4V LiPo Battery

**Type:** Product page · **SKU:** DFR0564 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/usb-charger-for-7-4v-lipo-battery.html ([markdown](https://core-electronics.com.au/usb-charger-for-7-4v-lipo-battery.html.md))

## Retired product

This product is retired and no longer available for purchase. Replaced by: CE08374.

**Replacement:** https://core-electronics.com.au/catalog/product/view/sku/CE08374

## Description

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](https://www.dfrobot.com/category-51.html). 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**

![](https://core-electronics.com.au/attachments/localcontent/DFR0564_Overview_1317053e78f.png)

USB Charger for 7.4V LiPo Battery Board Overview

**Connection Diagram**

![](https://core-electronics.com.au/attachments/localcontent/DFR0564_App_4798783d077.png)

Use a mobile phone AC adapter or power bank to charge lithium battery
Charger for 7.4V 2S LiPo Batteries from DFRobot or Redesign Baofeng UV-5R charger(Russian)

###  Features

3. High efficiency boost type USB charger, designed for 7.4 lithium battery
4. Charge input and battery port reserved pads for easy modification and measurement
5. All-round protection of battery and power supply
6. Multifunction LED status indicator, system status at a glance
7. USB ESD shell
###  Applications

9. Robots and motor drivers
10. Lithium battery charger
###  Specification

12. Charge input voltage (USB IN):3-6V (5V, typical for USB IN)
13. Battery input (BAT IN): 7.4V 2s cells Li-polymer/Li-ion battery
14. Maximum charge current: 1A trickle charging, constant current, constant voltage three phases charging
15. Charge cutoff voltage: 8.4V±1%
16. Charge efficiency: >90%
17. Protections
    ? BAT IN: over charge/reverse connection protection
    ? USB IN: adaptive input current limitation, over heat/reverse connection protection
18. Operation temperature: -40?~85?
19. Dimension: 28.0mm\*37.0mm/ 1.1 \* 1.46 inches
###  Documents

21. [Product wiki](https://www.dfrobot.com/wiki/index.php/USB_Charger_for_7.4V_LiPo_Battery_SKU:_DFR0564)
###  Parts List

23. USB Charger for 7.4V LiPo Battery x1
24. 14\*14\*7mm Aluminum cooling fin x1
25. 14\*14\*0.5mm Thermal conductive silicone pad x1

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/d/f/dfr0564-900x600.jpg)