Battery kit-3.7V 520 mAh

Battery kit-3.7V 520mAh contains two items: a 520mAh lithium-ion battery and a battery power detector to measure the power remain in a li-ion battery.

The li-ion battery is very slim, light and cost effective. It output 3.7 V voltage(nominal). You can also charge it with a specialized charger which has maximum input current 520 mA and maximum input voltage 4.2V. This battery comes with pre-attached JST 1.0 connector which is handy to click in and out. It also has built-in overcurrent protection to protect against output short circuit. Although, please still take caution and do not abuse the battery in usage. Never charge or use it unattended.

The battery power detector can detect the input voltage range of 3–4.2 volts. There are three JST sockets (JST 1.0, JST 2.0 and JST 2.0) and two battery-soldering pads which will adapt to those batteries with a different connector. As you connect a battery to this battery power detector, the on-board four LEDs will indicate remaining power in percentage (0–25%, 26–50%, 51–75%, 76–100%). Another LED will be on if you plug the connector of battery in the wrong way.

Note that there is only one battery reliable to be tested at the same time.

Note that it will damage this battery power detector as the input voltage is above 9 volts.

Note that never use the battery when it is being charged.

Version Tracker

Product version Release date Support status Notes
Battery kit-3.7V 520 mAh(first version) May 2016 Supported None


For battery
For battery power detector


For battery
Capacity 520 mAh
Nominal output voltage(DC) 3.7 volts
Connector JST 1.0
Maximum Charge Current 520 mA
Protection Short circuit protection for output circuit
Weight 11 g
Dimensions 50(width)×2.5(height)×41(depth) mm
For battery power detector
Input voltage 3 – 4.2V
Operating current 15 mA
Indication manner Four LEDs(we will detail it later)
Sockets Three sockets for different battery connector and two battery-soldering pads(we will detail it later)
Dimensions 30(width)×25(depth) mm
CN1185 Datasheet
Weight 3.2 g
Notes Only connect a single battery to this module; The input voltage to this module should less than 9 volts, or that will damage this module.

Platform supported(only for battery)

Platform Seeeduino/Arduino Rasberry Pi Beaglebone LinkIt ONE
Supported status Supported Not supported Supported(only with Grove Base Cape for Beaglebone) Not supported
Notes If no version number is not represented for a specific platform, it means this product support all versions within this platform.

Hardware Overview

This section shows descriptions for components on batter power detector.

Package includes(main parts)

Parts name Quantity
Li-ion battery 1 piece
Battery power detector 1 piece

Getting Started

Connect battery and battery power detector as following image. You can see LEDs are on indicates actual power remains.

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