The 3S–28S Lithium Battery Capacity Indicator is an electronic battery monitoring module designed to display the approximate remaining charge level of lithium battery packs. It supports battery configurations ranging from 3S to 28S and provides a convenient way to monitor battery voltage and charge status.

It is suitable for lithium-ion and compatible lithium battery systems used in electric bicycles, electric scooters, solar energy storage, power tools, and other battery-powered equipment.

Key Features

Wide battery configuration support: 3S–28S.
Compatible with supported lithium battery chemistries.
Displays approximate battery charge percentage.
Easy-to-read LED or digital display, depending on model.
Battery voltage monitoring.
Compact and lightweight design.
Simple installation and operation.
Suitable for battery packs and energy storage systems.

Technical Specifications

Parameter	Specification
Product name	Lithium Battery Capacity Indicator
Battery configuration	3S–28S
Supported cells	Lithium battery cells
Battery monitoring	Voltage-based
Display	LED / Digital (model dependent)
Measurement	Battery voltage
Function	Battery level indication
Application	Lithium battery packs

Battery Voltage Reference

For standard 3.7V nominal lithium-ion cells:

Configuration	Nominal voltage	Full-charge voltage
3S	11.1V	12.6V
4S	14.8V	16.8V
7S	25.9V	29.4V
10S	37V	42V
13S	48.1V	54.6V
16S	59.2V	67.2V
20S	74V	84V
24S	88.8V	100.8V
28S	103.6V	117.6V

Applications

Electric bicycles and motorcycles.
Electric scooters.
Solar energy storage systems.
Lithium-ion battery packs.
Portable power stations.
DIY battery projects.
Battery-powered tools and equipment.

3S-28S Lithium Battery Capacity IndicatorS