DFRobot
USB Charger for 7.4V LiPo Battery
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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...
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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
Board Overview
USB Charger for 7.4V LiPo Battery Board Overview
Connection Diagram
Use a mobile phone AC adapter or power bank to charge lithium battery
FEATURES
- 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
APPLICATIONS
- Robots and motor drivers
- Lithium battery charger
SPECIFICATION
- 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
DOCUMENTS
Jargon buster
Plain-language definitions for the technical terms used above.
- Gravity
- Gravity is DFRobot’s plug-in connector system for sensors, motors and modules, using standard cables to reduce loose jumper wiring. It matters because Gravity-compatible parts can connect directly to these ports, while non-Gravity parts may need adapters or manual wiring.
- LED
- A light-emitting diode is a small electronic component that lights up when current flows through it in the correct direction. In this kit, LEDs create the flashing effect, so polarity and correct soldering matter for the project to work.
- LiPo
- A lithium polymer rechargeable battery commonly used in portable electronics projects. It matters because LiPo batteries need correct charging circuitry and care, and this board includes hardware intended for that battery type.
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