Mini 3.7V Battery Capacity Led Indicator

Mini 3.7V 4.2V Lithium Battery Capacity Indicator

18650 Ultra Small Single Cell 1S Li-ion Battery 4 Level Percentage Led Indicator Module

     It is a very small sized voltage level indicator module designed for 3.7V lithium ion batteries. It reports the charge level visually through leds by measuring the battery voltage. It has 4 leds on it. These leds show the voltage level fullness such as 25% - 50% - 75% - 100%. The led colors light up gradually according to the battery charge level. It does not perform charge control, it is only for indication purposes. The module is connected in parallel to the battery. The integrated circuit on it detects the battery voltage and lights the leds according to the determined voltage ranges.

•     Ultra small design: It is ideal for micro drones, portable hobby projects and all kinds of electronic circuits where space is limited.
•     Precise measurement:  It performs high accuracy voltage detection with +-1% margin of error.
•     Smart hysteresis: It ensures that the transitions between the leds are stable during charging and discharging, prevents fluctuations.
•     Easy connection: It works only by connecting the plus and minus ends, there is no need for an additional piece of circuit etc.

Instructions for use:  Solder the red cable or the plus line to the + end of the battery, the black cable or the minus line to the - end of the battery. When used inside a plastic case or body, care should be taken that the ambient temperature does not exceed 65C.

Battery voltage level indicator values:

• 25% >> 3.4V - 3.55V
• 50% >> 3.55V - 3.7V
• 75% >> 3.7V - 3.87V
• 100% >> 3.87V - 4.2V

Areas of use:

• 18650 battery projects
• Portable electronic circuits
• Diy projects and arduino applications.
• Systems where it is necessary to quickly see the battery status
• Electric toys and robotic systems.
• Power tools (drill, screwdriver etc.) battery status monitoring.
• Powerbank and portable power supplies.

Warnings:

•     Attention should be paid to the poles (+ and -) when making the connection.
•     It does not provide charge or discharge protection. It does not replace a bms
•     The module is affected by water and moisture
•     For a more precise measurement, it is recommended to measure the battery at idle (when not under load).
•     It is recommended to use it together with a bms board so that li-ion batteries are not damaged by falling below 3V.
•     It draws very low current in continuously connected use

Features:

• Compatible battery type: 3.7V Li-ion
• 4 Piece led indicator
• Led color: Green, yellow and red 
• Operating voltage: 3V to 4.2V
• The battery status is easily understood visually.
• Low power consumption: Its effect on battery life is minimum with 2-3mA static current consumption.
• It is operated by connecting only the (+) and (-) ends in parallel to the battery.
• Indicator: Smd led
• Usage type: Parallel connection
• Mounting: Solderable pad
• It provides voltage detection accuracy with its 1% high precision.
• It can be easily integrated into all kinds of narrow spaces and portable devices with its ultra small size.
• Operating temperature:  -20C to 65C
• Dimensions: 4.5mm x 9mm
• Weight: 1gr

Package contents:

•    1 Piece Mini 3.7V Battery Capacity Led Indicator