Description
The 4S 18650 Lithium Battery Capacity Indicator Module is a compact, intelligent power monitoring board designed specifically for 4-series (12V nominal / up to 16.8V fully charged) lithium-ion and 18650 battery packs. Featuring an integrated 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 12V power banks, solar enclosures, and portable electronics. Simply connect the positive and negative terminals to your 4S 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 pack voltage tiers (25% at ~4.2V, 50% at ~8.4V, 75% at ~12.6V, and 100% full at 16.8V).
- Ultra-Low Static Power Draw: Consumes a negligible 2 to 3 mA of standby current, preventing parasitic drain on your 4S battery pack.
- Compact Form Factor: Slim circuit board design (44 × 9 × 7.5 mm) easily integrates into tight enclosures, custom battery builds, and portable gear.
Benefits
- Instant Capacity Checks: Know your exact 12V system 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
- 12V DIY Power Banks: Status display panel for custom 4S 18650 power banks and portable generator boxes.
- Portable Electronics: Battery level tracking for 12V LED lighting rigs, field instruments, and small DC projects.
- Solar & Backup Packs: Power monitoring for small off-grid 12V lithium energy storage boxes.
Package Includes
- 1 x 4S 18650 12V 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 | 4S 18650 Lithium Battery Capacity Indicator |
| Battery Compatibility | 4-Series (4S) Lithium-Ion / 18650 / LiPo Battery Packs (12V Nominal / 16.8V Max) |
| 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 |
| Physical Product Dimensions (Length × Width × Height) | 44 mm × 9 mm × 7.5 mm |
| Net Weight / Shipping Weight | ~8 g / 0.01 kg |
| Shipping Dimensions | 5 cm × 1 cm × 1 cm |
