4S Lithium Battery Capacity Indicator Board – Li-ion / Li-po Voltage Level Display Module with LED Status

🔋 Real-Time Battery Monitoring: This compact and easy-to-use Lithium Battery Capacity Indicator Board provides an intuitive LED-based visual representation of battery levels for 1S to 4S Li-ion / Li-po cells. Whether you're using single or multi-cell battery packs, this module helps you quickly assess the remaining charge at a glance.

⚙️ Key Features

• 🔧 Wide Compatibility: Supports 1S, 2S, 3S, 4S lithium batteries (Li-ion / Li-po)
• 📊 LED Display: 1 red and 4 blue (or green) LEDs indicate charge levels clearly
• 🛠️ Multi-voltage Support: Also compatible with 12V, 24V, 36V, and 48V lead-acid batteries or lithium iron phosphate setups
• ⚡ Real-Time Voltage Indication: Lights illuminate based on battery voltage thresholds
• 🎯 Accuracy: Voltage detection error margin ~2%
• 🔌 Plug & Play: Simple two-wire connection; no programming required

💡 Voltage Display Logic

For each supported cell (N), the LEDs respond to voltage ranges as follows:

• 🔴 1st LED (Red): Always on for power indication
• 🔷 2nd LED: Turns on when voltage > N × 3.3V
• 🔷 3rd LED: Turns on when voltage > N × 3.5V
• 🔷 4th LED: Turns on when voltage > N × 3.7V
• 🔷 5th LED: Turns on when voltage > N × 3.9V

🔌 Lead-Acid & LiFePO4 Battery Compatibility

• 🔹 12V Batteries: LEDs turn on at >11.0V, >11.3V, >11.6V, >12.9V
• 🔹 24V Batteries: LEDs turn on at >22.5V, >24.0V, >25.2V, >26.4V
• 🔹 36V Batteries: LEDs turn on at >33.5V, >35.2V, >37.0V, >38.7V
• 🔹 48V Batteries: LEDs turn on at >44.8V, >47.0V, >49.0V, >52.0V

📦 Applications

• 🔋 Battery-powered projects & DIY electronics
• 🚴 Electric bikes, scooters, and RC models
• 🔦 Portable power banks and solar storage systems
• 🔧 Robotics and embedded systems

Note: This product is designed for general voltage indication purposes and has a ~2% tolerance range. Not recommended for precision battery diagnostics.