This 2S 3S Lithium Battery Voltage Capacity Power Level Indicator is a compact and efficient battery status display module designed specifically for Li-ion and Li-Polymer batteries such as 18650 cells. It provides a clear and visual indication of your battery pack’s voltage and remaining capacity, making it perfect for use in DIY battery packs, RC models, inverters, power banks, and portable electronic devices.

The module uses a simple red button to activate the LED display that shows the current battery level. It features ultra-low standby power consumption and includes reverse polarity protection, ensuring safety and reliability. This voltage indicator is a convenient tool for monitoring your battery’s charge state and preventing over-discharge or overuse.

Features:

• Designed for 2S (7.4V) and 3S (11.1V) Li-ion or LiPo battery packs

• Provides clear LED indication of voltage and battery capacity

• Low power consumption: around 30mA only when displaying

• Reverse connection protection to prevent accidental wiring errors

• Compact and lightweight design ideal for integration into small devices

• No power drain when turned off — efficient and battery-friendly

• Easy-to-use single red button for display activation

• Suitable for battery pack monitoring, portable power systems, DIY electronics, and RC battery testing

Specifications:

• Battery Type: Li-ion / LiPo (not suitable for LiFePO4 or LTO)

• Voltage Range:

  • L2: 9V – 11V

  • L3: 11V – 11.5V

• Size: 2.7 × 62 × 15.8 mm

• Cable Length: 140 mm

• Power Consumption: 30mA (active), 0mA (idle)

• Display: 5 LED indicators for power level status

• Operation: Manual press button

How to Use:

• Connect the indicator module to the output terminals of your 2S or 3S Li-ion/LiPo battery pack.

• Tap the red button to display the voltage and battery capacity level.

• When the LEDs are on, the current draw is approximately 30mA.

• Release the button to turn off the LEDs — the module will consume no power in this state.

• If you accidentally reverse the polarity, the board’s reverse connection protection prevents damage.

• Use it during charging or discharging to check your battery’s real-time status.

Applications:

• Lithium battery pack monitoring for 2S/3S configurations

• DIY Li-ion power projects, RC vehicles, and portable devices

• Inverter battery status display

• Solar power banks, robotics, and battery diagnostic tools

• Voltage level display in electronic prototypes and testing setups

Package Includes:

• 1 x 2S 3S Lithium Battery Voltage Capacity Power Level Indicator

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