1S 3.7V Lithium Battery Capacity Indicator Module

Product Description

The 3.7V Battery Indicator is engineered for "glance-and-go" monitoring. It functions by measuring the real-time voltage of the connected cell and comparing it against predefined internal thresholds. The module consists of a dedicated controller and a high-contrast display that remains visible even in low-light conditions. Its simple two-wire interface allows it to be connected directly to the battery terminals or through a momentary push-button for on-demand checking, ensuring it doesn't drain the battery when not in use.

Key Features

• Intuitive Visuals: The 4-segment display clearly indicates 25% (3.3V), 50% (3.5V), 75% (3.7V), and 100% (3.9V+) charge levels.

• Ultra-Thin Profile: The slim PCB design is easy to mount behind a transparent acrylic panel or a cutout in a 3D-printed enclosure.

• Low Power Consumption: Draws minimal current during operation, helping to preserve the energy of the battery it is monitoring.

• Plug-and-Play Wiring: Only requires connection to the positive (+) and negative (-) terminals of the battery; no external components are needed.

• Static Protection: The module is built to handle the typical voltage fluctuations found in lithium-ion discharge cycles.

Technical Details

• Mounting: Features two mounting holes for secure installation.

• Connection: Red wire (Positive), Black wire (Negative).

• Display Logic: If the battery voltage is below 3.3V, only the red battery outline (if applicable) or no bars will show.