Description
The 1S 18650 Lithium Battery Capacity Indicator Module is a compact, intelligent power monitoring board designed for single-cell (3.7V / 4.2V) lithium-ion and 18650 battery packs. Featuring a user-friendly trigger switch, the module activates instantly to display your battery’s remaining charge across a four-stage green LED array, then automatically powers down after 3 seconds to conserve energy.
Operating with an ultra-low static current consumption of just 2 to 3 mA, this power indicator is ideal for DIY power banks, custom enclosures, and portable electronics. Simply connect the positive and negative terminals to your battery pack to gain immediate, at-a-glance visibility over your system’s state of charge.
Note: Product design or PCB layout may vary slightly based on manufacturing batches. Ensure correct polarity connection to avoid damaging the indicator circuit.
Key Features
- Push-Button Activation: Press the onboard trigger switch to view battery status; automatically turns off after 3 seconds to save power.
- 4-Stage Green LED Telemetry: Clear visual indicators map directly to battery voltage tiers (25% at ~1V, 50% at ~2.1V, 75% at ~3.1V, and 100% full at 4.2V).
- Ultra-Low Static Power Draw: Consumes a negligible 2 to 3 mA of standby current, preventing parasitic drain on your 1S battery cell.
- Compact Form Factor: Tiny circuit board design easily integrates into tight enclosures, custom battery builds, and portable gear.
Benefits
- Instant Capacity Checks: Know your exact power status on demand without needing to pull out a digital multimeter.
- Maximum Energy Efficiency: The auto-off 3-second timer ensures the indicator only draws power when you actively press the button.
- Simple Hookup: Direct two-wire connection layout makes integration straightforward for makers and hobbyists.
Applications
- DIY Power Banks: Status display panel for custom single-cell 18650 power banks and charger boxes.
- Portable Electronics: Battery level tracking for handheld gadgets, flashlights, and small DC projects.
- Maker & Prototyping Projects: Power monitoring for breadboard circuits and experimental 3.7V LiPo setups.
Package Includes
- 1 x 1S 18650 Lithium Battery Capacity Indicator Module (Green LED)
- 1 x Instruction Manual / Quick Guide
Specifications
| Parameter | Specification |
|---|---|
| Item Type | Battery Level Indicator / Power Meter Module |
| Model Type / Series | 1S 18650 Lithium Battery Capacity Indicator |
| Battery Compatibility | Single-Cell (1S) Lithium-Ion / 18650 / LiPo Batteries (3.7V – 4.2V nominal) |
| Display Type & Color | 4-Stage Green LED Indicator Array with Push Trigger Switch |
| Static Current Consumption | 2 mA to 3 mA (Ultra-low standby drain) |
| Auto-Off Function | Automatically powers off 3 seconds after trigger button is pressed |
| Net Weight / Shipping Weight | ~2 g / 0.02 kg |
| Shipping Dimensions | 5 cm × 1 cm × 1 cm |
