Description
The 3S 11.1V-12.6V DC Lithium Battery Capacity Level Indicator Module is a compact and easy-to-use battery level indicator designed for 3S lithium-ion battery packs. It provides a quick visual indication of the battery’s approximate voltage level through a clear 4-level blue LED bar display.
This module is suitable for 3S 18650 lithium-ion battery packs, DIY power supplies, battery charging projects, RC vehicles, electric vehicles, and other lithium battery applications. Simply connect the indicator’s positive (+) and negative (-) terminals to the corresponding terminals of your battery pack to check its current voltage level.
The module supports a 11.1V nominal battery pack with a maximum voltage of 12.6V when fully charged, making it a convenient solution for basic battery voltage monitoring.
Key Features
- Designed for 3S 11.1V lithium-ion battery packs
- Operating/display range: 11.1V-12.6V DC
- Compatible with 3S 18650 lithium-ion battery packs
- 4-level LED bar indicates approximate battery voltage
- Blue LED display with red module outline
- Simple positive and negative terminal connection
- Compact and easy to install
- Provides a quick visual battery status indication
- Suitable for DIY and electronic battery projects
Battery Level Display
The 4 LED bars indicate the approximate battery voltage based on the voltage per cell:
- Above 9.9V (3 × 3.3V): 1 LED bar illuminates
- Above 10.5V (3 × 3.5V): 2 LED bars illuminate
- Above 11.1V (3 × 3.7V): 3 LED bars illuminate
- Above 11.7V (3 × 3.9V): 4 LED bars illuminate
- Below 9.9V: The LED display turns off, indicating that the battery voltage is below 3.3V per cell and the battery should be charged
Note: This is a voltage-based indicator and provides an approximate battery level rather than an exact measurement of remaining battery capacity.
How to Use
Connect the positive (+) terminal of the indicator to the positive terminal of the 3S battery pack and the negative (-) terminal to the battery’s negative terminal. Once connected, the blue LED bars will illuminate according to the battery pack’s voltage.
Applications
The 3S lithium battery level indicator can be used for:
- 3S 18650 lithium-ion battery packs
- DIY power supplies
- Portable battery projects
- Battery charging systems
- RC cars and other RC projects
- Electric vehicle projects
- DIY electronics
- Lithium-ion battery monitoring
Specifications
| Specification | Details |
|---|---|
| Product Type | 3S Lithium Battery Capacity Level Indicator |
| Battery Configuration | 3S |
| Nominal Voltage | 11.1V |
| Maximum Voltage | 12.6V |
| Display Range | 11.1V-12.6V DC |
| Battery Type | Lithium-ion |
| Compatible Cells | 18650 and other 4.2V/cell Li-ion batteries |
| Display | 4-Level LED Bar |
| LED Display Color | Blue |
| Module Outline Color | Red |
| Connection | Positive (+) / Negative (-) |
| SKU | 1574 |
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