1–8S Li-ion Battery Capacity Indicator Module 3.7V/4.2V
1–8S Li-ion Battery Capacity Indicator Module 3.7V/4.2V
1–8S Lithium Battery Capacity Indicator Module – Accurate 3.7V/4.2V Power Display
Keep your lithium battery packs performing at their best with this compact and easy-to-read Battery Capacity Indicator Module. Compatible with 1S through 8S single-cell Li-ion and LiPo configurations (3.7V nominal, 4.2V max per cell), this module gives you an instant, clear visual readout of remaining charge — perfect for electric vehicles, RC models, DIY power packs, e-bikes, and more.
Whether you're building a custom battery bank or monitoring power on the go, this tester takes the guesswork out of knowing exactly how much juice you have left.
Key Features
- Wide Compatibility: Supports 1S, 2S, 3S, 4S, and up to 8S single 3.7V lithium cell configurations
- Accurate Display: Clear LED/digital readout showing real-time battery capacity and voltage (up to 4.2V per cell)
- Compact & Lightweight: Small form factor makes it easy to integrate into any build or mount on your device
- Universal Li-ion / LiPo Support: Works with standard lithium-ion and lithium polymer battery chemistries
- Easy to Use: Simple plug-and-read operation — no complex setup required
- Ideal for Electric Vehicles: Designed as a reliable power tester for e-bikes, electric scooters, RC vehicles, and DIY battery packs
- Durable Construction: Built to withstand regular use in workshop and field environments
Specifications
- Compatible Cells: 1S / 2S / 3S / 4S (single cell, up to 8S configurations)
- Nominal Cell Voltage: 3.7V
- Max Cell Voltage: 4.2V
- Battery Chemistry: Li-ion / LiPo
- Display Type: LED Capacity Indicator
- Application: Electric vehicles, RC models, DIY power banks, e-bikes
Made in Mainland China.
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Frequently Asked Questions
Q: What battery types is this lithium battery capacity indicator module compatible with?
A: This module is compatible with standard Li-ion (lithium-ion) and LiPo (lithium polymer) single-cell batteries with a nominal voltage of 3.7V and a maximum charge voltage of 4.2V. It supports 1S, 2S, 3S, 4S, and up to 8S cell configurations, making it versatile for a wide range of applications including electric vehicles, RC models, and DIY battery packs.
Q: How do I use this battery power tester?
A: Simply connect the indicator module to your lithium battery pack's balance or power leads. The LED display will immediately show the current battery capacity and voltage level — no calibration or programming required. It's a plug-and-read solution designed for quick and convenient monitoring.
Q: Can I use this module for my e-bike or electric scooter battery?
A: Yes! This indicator module is specifically designed to support electric vehicle battery packs. As long as your e-bike or scooter uses a Li-ion or LiPo battery within the supported voltage range (1S–8S, 3.7V–4.2V per cell), this tester will provide an accurate capacity readout to help you monitor charge levels on the go.
Q: Is this module suitable for DIY battery projects?
A: Absolutely. Its compact size and straightforward connectivity make it an excellent addition to custom battery builds, DIY power banks, and hobbyist electronics projects. It integrates easily into most enclosures and requires no extra components to function.