This ultra-thin 8.4V 2-series Li-ion battery capacity indicator board is an ideal choice for your DIY projects or existing equipment, providing real-time, intuitive battery level display. Equipped with 5 bright LED indicator lights, it allows you to easily monitor power status. Its broad compatibility makes it suitable for lithium batteries, lead-acid batteries, electric vehicle batteries, and various other electrical devices. What's more, it features reverse connection protection, ensuring that even incorrect wiring won't cause damage, guaranteeing safe and worry-free use.

Key Features

• Intuitive Power Display: 5 LED indicator lights provide a clear and aesthetically pleasing display of battery percentage, keeping you informed at a glance.
• Ultra-Thin Design: Compact dimensions (2.7x62x15.8MM) make it easy to integrate into various space-constrained applications.
• Wide Compatibility: Suitable for 8.4V 2-series lithium batteries, lead-acid batteries, electric vehicle batteries, and other electrical equipment, offering diverse application scenarios.
• Safety Protection: Built-in reverse connection protection effectively prevents damage to the board due to incorrect wiring, ensuring safer use.
• Low Power Consumption: After releasing the button, the LEDs will turn off with a delay, and the board consumes no power in static mode, saving energy.
• Convenient Operation: Simply connect the positive and negative terminals to the battery and gently press the red button to check the power level.

Technical Specifications

• Compatible Battery Types: 8.4V 2-series lithium batteries, lead-acid batteries, electric vehicle batteries, etc.
• Display Method: 5 LED indicator lights
• Power Level (Voltage Reference):
  • L1: 4.5V - 5.5V
  • L2: 5.5V - 6.8V
  • L3: 6.8V - 7.4V
  • L4: 7.4V - 8.0V
  • L5: 8.0V - 8.4V
• Dimensions: 2.7mm (Thickness) * 62mm (Length) * 15.8mm (Width)
• Cable Length: 140mm
• Protection Feature: Reverse Connection Protection

How to Use

1. Connect the red positive wire and black negative wire of the display board in parallel to the positive and negative terminals of the battery you wish to test.
2. Gently press and hold the red button on the display board with your finger. The LED indicator lights will illuminate, showing the real-time battery charge level.
3. Upon releasing your finger, the LED lights will automatically turn off after a 3-5 second delay. In its static state, the display board will consume no power, effectively conserving battery energy.