Mini LED Lithium Battery Level Indicator Module – 1S & 2S

Keep a clear eye on your lithium battery charge with this compact Mini LED Battery Level Indicator Module. Designed for 1S (3.7V) and 2S (7.4V) lithium battery packs, this small but mighty module displays remaining charge at a glance using bright LED indicators — ideal for RC vehicles, DIY electronics, robotics, e-bike packs, and custom battery builds.

Whether you're a hobbyist, maker, or electronics enthusiast, this module gives you instant visual feedback on battery status, so you never get caught off guard by a dead cell. Its compact SMD design makes it easy to embed into projects, enclosures, or portable devices.

Key Features

Compatibility: Supports 1S (3.7V) and 2S (7.4V) lithium/Li-ion/LiPo battery configurations
LED Display: Bright multi-LED bar clearly shows battery charge level in real time
Ultra-Compact Design: Available in Mini and Long form factors to fit various project enclosures
SMD Construction: Surface-mount design for reliable, low-profile installation
Easy Integration: Plug-and-play module — no complex wiring required
Quantity Options: Available in packs of 1, 5, 10, or 20 for bulk builds
Customizable: Choose from 3 color/form-factor variants: 1S Mini, 2S Mini, and 1S Long

Product Specifications

Battery Type: Lithium-ion / LiPo
Supported Voltages: 3.7V (1S), 7.4V (2S)
Display Type: LED bar indicator
Construction: SMD (Surface Mount Device)
Variants: 1S Mini, 2S Mini, 1S Long
Pack Size: 1pc / 5pcs / 10pcs / 20pcs

What's in the Box?

Mini LED Lithium Battery Level Indicator Module(s) — quantity per selected pack size

Perfect For

RC cars, drones, and hobby aircraft battery monitoring
DIY electronics and maker projects
Robotics builds with LiPo power systems
Portable device battery management
E-bike and power tool battery packs

Looking to round out your electronics toolkit? Check out these related items from our store:

Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What battery types are compatible with this Mini LED Battery Level Indicator Module?

A: This module is designed for lithium-ion and LiPo (lithium polymer) batteries. It supports 1S (3.7V nominal) and 2S (7.4V nominal) battery configurations, making it ideal for RC vehicles, drones, robotics, and custom DIY electronics projects.

Q: What are the available variants and pack sizes for this indicator module?

A: You can choose from three form-factor variants — 1S Mini, 2S Mini, and 1S Long — to suit your project's space requirements. Pack sizes are available in 1pc, 5pcs, 10pcs, and 20pcs, making it easy to stock up for multiple builds.

Q: How do I install this LED battery level indicator into my project?

A: The module uses a compact SMD design and is built for straightforward integration. Simply connect it to your lithium battery's output leads according to the supported voltage range (3.7V for 1S or 7.4V for 2S), and the LED bar will immediately display the current charge level — no additional programming or complex wiring needed.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.