MH-DL18S Lithium Battery Charge Level Indicator LED Module (1S–8S)
Product Description
The MH-DL18S Battery Charge Level Indicator is a compact and easy-to-use LED module designed to visually display the charge level of lithium-ion / LiPo battery packs from 1S up to 8S (3.7 V to 33.6 V). With clear LED bars representing the charging status, it’s perfect for battery testers, DIY projects, RC applications, e-bikes, power stations, drones, and other battery-powered systems.
This module provides a simple plug-and-play solution for monitoring battery voltage without needing a display or microcontroller. The LEDs light progressively according to the battery’s voltage level, making it easy to check remaining charge at a glance.
Key Features
- Wide battery support: 1S ~ 8S Li-ion / LiPo battery packs
- Visual LED bar indicator: Displays approximate battery charge level
- Simple 3-wire connection: Easy integration without programming
- Compact PCB form factor
- Suitable for DIY, RC, robotics, power tools, etc.
- Low standby current consumption
- Bright and clear LEDs for easy reading
Specifications
Specification | Value |
|---|---|
| Model | MH-DL18S LED Battery Indicator |
| Supported Battery | Lithium-ion / LiPo 1S to 8S |
| Operating Voltage | 3.7 V ~ 33.6 V |
| Voltage Detection | Based on cell count (1S–8S) |
| Display | Multi-color LED bar indicator |
| Number of LEDs | Typically 4 LEDs |
| Connector | Standard 3-pin (Battery +, B-, Signal) |
| PCB Size | Compact, lightweight |
| Mounting | Through-bolt or panel mount compatible |
| Operating Current | Low (mA level) |
How It Works
- The module senses the total pack voltage and lights LEDs according to thresholds that correspond to approximate state-of-charge levels of each cell.
- As voltage increases, more LED segments light up to indicate higher charge.
-
Example (Typical behavior — may vary by board calibration):
- 1 LED: Low battery (~3.3–3.6 V/cell)
- 2 LEDs: ~4.0 V/cell
- 3 LEDs: ~4.1 V/cell
- 4 LEDs: ~4.2 V/cell (Fully charged)
- Note: The MH-DL18S does not balance cells — it only indicates voltage level across the entire pack.
Typical Applications
- LiPo battery testers
- RC chargers & battery monitors
- E-bike / e-scooter battery level indicator
- Portable power banks
- Solar battery systems
- DIY battery-powered electronics
Installation Tips
- Connect properly to battery terminals — reverse polarity may damage the board.
- Use with battery holders or XT60 / Deans connectors for easy plug-in.
- Not designed for continuous high-current load — for measurement only.
Why Use the MH-DL18S Module?
- Simple visual indication without displays or programming
- Works with most lithium battery packs (1S–8S)
- Helps prevent over-discharge by giving early low-voltage warnings
- Ideal for hobbyists and professional battery systems alike
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