The Battery Capacity Indicator simplifies power monitoring for DIY electronics, offering real-time battery health visualization through an intuitive 8-level LED interface. Designed for seamless integration with Arduino, Raspberry Pi, and embedded systems, this compact module eliminates guesswork by displaying remaining charge at a glance—ideal for portable devices, IoT sensors, and educational prototypes.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage | 3.3V–5.5V (±5%) |
| Brightness Levels | 8 (adjustable via PWM/resistor) |
| Dimensions | 42×24×8mm (1.65×0.94×0.31") |
| Current Draw | <5mA (typical) |
| Compatibility | 1S–4S Li-ion/Polymer, 12V Lead Acid |
| Display Type | LED Bar Graph (10-segment) |
Functional Highlights
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Plug-and-Play Simplicity: Connect directly to battery terminals via V+/GND pins; no complex calibration needed.
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Low-Power Design: <5mA operation extends battery life in portable projects.
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Adaptive Brightness: Adjust LED intensity for dark environments (e.g., wearables) or sunlight readability (e.g., outdoor trackers).
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Voltage Agnostic: Auto-scales readings for 3.7V Li-ion to 12V Pb-acid systems within 3.3V–5.5V logic range.
Typical Applications
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Portable Power Banks: Visualize remaining capacity for USB-charged devices.
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Solar Trackers: Monitor battery health in off-grid sensor nodes.
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Robotics: Integrate into chassis for real-time voltage alerts (e.g., low-power shutdown trigger).
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STEM Kits: Teach energy management concepts with hands-on prototyping.
Package Contents
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1 × Battery Capacity Indicator (42×24×8mm)
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Note: Mounting hardware/cables not included
⚠️ Usage Tip: For multi-cell batteries (e.g., 3S Li-ion), add a voltage divider (resistor network) to scale input within 3.3V–5.5V range.