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1-8S universal version (Green)

SKU: FA2192-8
Compatible Battery

1S – 8S lithium-ion / lithium-polymer
Voltage Range

3.0V – 33.6V
Display Type

LED bar graph (4 levels)
Indication Levels

25% / 50% / 75% / 100%
LED Color

Green
Power Supply

Powered by monitored battery pack
Protection

Reverse polarity protection
Module Dimensions

Compact PCB with mounting holes

The 1-8S Universal Lithium Battery Power Display Module is a versatile, easy-to-use battery capacity indicator designed to work with 1 to 8 cell (1S–8S) lithium battery packs. It provides a clear, visual indication of remaining battery capacity using a row of green LEDs, making it an essential accessory for battery-powered projects, RC vehicles, drones, power banks, and portable electronics.

The module’s universal design means it can be used with a wide range of lithium battery configurations — from single-cell 3.7V batteries to 8-cell 33.6V packs. It continuously monitors the total pack voltage and illuminates the appropriate number of LEDs to indicate the current charge level — typically 25%, 50%, 75%, and 100%. This allows you to quickly assess whether a battery pack needs charging without using a multimeter.

The module features high-brightness green LEDs that provide clear visibility in various lighting conditions. The compact PCB design with mounting holes makes it easy to integrate into battery packs, RC models, and custom enclosures. The module operates directly from the battery pack it monitors, requiring no separate power supply.

Installation is simple: connect the module’s B+ and B- pads to the battery pack’s positive and negative terminals, and the LEDs will immediately indicate the charge level. The module includes reverse polarity protection to prevent damage from accidental incorrect connection.

The 1-8S universal power indicator is widely used in RC vehicles, drone battery packs, DIY power banks, portable speakers, robotic systems, electric bicycles, energy storage systems, and any application where lithium battery status monitoring is important. It is also popular in educational projects for teaching battery management and voltage monitoring.

Important Note: The 1-8S universal version is designed to work with lithium-ion and lithium-polymer batteries (3.7V nominal per cell). It is not suitable for lead-acid batteries, which have different voltage characteristics.

Whether you are building a custom battery pack, maintaining a fleet of RC batteries, or adding battery status indication to a portable device, the 1-8S Universal Lithium Battery Power Display Module provides a reliable, cost-effective solution. It is suitable for individual makers, students, and businesses purchasing in bulk for product development or educational programs.

Features

  • 1S to 8S universal compatibility — Works with 1-cell to 8-cell lithium battery packs

  • LED capacity display — Shows charge level at 25%, 50%, 75%, and 100%

  • Green LED display — High-brightness green LEDs for clear visibility

  • Direct battery operation — Powered by the battery pack it monitors

  • Reverse polarity protection — Prevents damage from incorrect connection

  • Compact PCB design — With mounting holes for easy integration

  • Simple installation — Connect B+ and B- to battery pack terminals

  • Wide application range — RC vehicles, drones, power banks, e-bikes, energy storage

Technical Specifications

# Parameter Specification
1 Compatible Battery 1S – 8S lithium-ion / lithium-polymer
2 Voltage Range 3.0V – 33.6V
3 Display Type LED bar graph (4 levels)
4 Indication Levels 25% / 50% / 75% / 100%
5 LED Color Green
6 Power Supply Powered by monitored battery pack
7 Protection Reverse polarity protection
8 Module Dimensions Compact PCB with mounting holes

Usage

Getting Started

  1. Identify the battery pack terminals — Locate the positive (+) and negative (-) terminals of your lithium battery pack.

  2. Connect the module — Solder or connect the module’s B+ pad to the battery pack positive terminal and B- pad to the battery pack negative terminal. Observe correct polarity.

  3. Observe the display — The LEDs will immediately illuminate to indicate the current charge level:

    • 1 LED = 25% or less

    • 2 LEDs = 25–50%

    • 3 LEDs = 50–75%

    • 4 LEDs = 75–100%

  4. Charge as needed — When the display shows low capacity, recharge the battery pack using an appropriate lithium battery charger.

LED Indication Reference (Per Cell)

LED Count Charge Level Voltage Per Cell (Approx.) Action
1 LED ≤ 25% 3.0V – 3.4V Recharge soon
2 LEDs 25–50% 3.4V – 3.7V Monitor
3 LEDs 50–75% 3.7V – 4.0V Good
4 LEDs 75–100% 4.0V – 4.2V Full

Typical Applications

  • RC vehicles — Monitor battery level before and during operation

  • Drone battery packs — Check charge status before flight

  • DIY power banks — Monitor battery status in custom portable chargers

  • Portable speakers — Display battery status on audio devices

  • Robotic systems — Monitor battery level for runtime planning

  • Electric bicycles — Monitor battery level for range planning

  • Energy storage systems — Monitor battery status in solar storage

  • Educational projects — Teaching battery management and voltage monitoring

Notes for Business Buyers

  • Universal compatibility — One module covers 1S through 8S configurations, reducing inventory SKUs.

  • Simple integration — Connects directly to battery pack terminals with no additional components.

  • Cost-effective — Low unit cost makes it practical for volume production and educational kits.

  • Suitable for bulk purchasing — Ideal for battery pack assemblers, RC hobby shops, and educational institutions.

Q: What is the 1-8S Universal Lithium Battery Power Display Module used for?

It is a battery capacity display board that monitors the charge level of lithium battery packs from 1 to 8 cells and indicates remaining capacity using LEDs.

Q: What batteries are compatible with this module?

It is designed for 1S to 8S lithium-ion and lithium-polymer batteries with a nominal voltage of 3.7V per cell.

Q: Can I use this module with a lead-acid battery?

No. This module is designed specifically for lithium batteries. Lead-acid batteries have different voltage characteristics and would give inaccurate readings.

Q: How does the module work with different cell counts?

The module automatically adjusts its voltage thresholds based on the total pack voltage. It works with 1S through 8S configurations without manual configuration.

Q: How many LED levels does the display have?

The display has 4 LED levels indicating approximately 25%, 50%, 75%, and 100% charge.

Q: What color LEDs does this module have?

This module features green LEDs.

Q: How do I connect the module to the battery pack?

Connect the module’s B+ pad to the battery pack positive terminal and B- pad to the battery pack negative terminal. Observe correct polarity.

Q: Does the module require a separate power supply?

No. The module is powered directly by the battery pack it monitors.

Q: Does it have reverse polarity protection?

Yes. The module includes reverse polarity protection to prevent damage from incorrect connection.

Q: Can I purchase in bulk for a product development project?

Yes. This module is suitable for both individual users and business purchasing, including battery pack assemblers, RC hobby shops, and educational institutions.

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