12V 3s Lithium Battery Capacity Tester/Indicator

3-Series (3S) 12V Lithium Calibration: Specially tuned for 3-cell (3S) 11.1V nominal and 12.6V max charge lithium-ion, LiPo, and 18650 battery packs.

5-Segment Visual LED Battery Bar Display: Features a clear 4-bar capacity grid surrounded by a battery frame indicator that lights up according to voltage level:

11.1V (1 bar): 25% capacity

11.6V (2 bars): 50% capacity

12.1V (3 bars): 75% capacity

12.6V (4 bars): 100% capacity

Tactile Power Test Button: Integrated red micro-switch allows users to trigger the LED display on demand, conserving battery power when monitoring is not actively needed.

Ultra-Low Operating Power Draw: Consumes minimal quiescent current during active status checks, preventing unwanted battery drain over extended standby periods.

Pre-Wired Lead Cables: Comes equipped with flexible red (+) and black (-) connection leads for quick, straightforward wiring to battery terminals or power busses.

Board Material: Lightweight white PCB housing with surface-mount LED bar graph indicators and precision comparator circuit.

Technical Specifications:

Series Configuration: 3S (3 Cells, 11.1V nominal / 12.6V peak).

Display Type: 5-segment LED Bar Graph (Blue/Red/Green status LEDs).

Operating Voltage Range: 9.9V – 12.6V DC.

Color: White Board with Black/Red Lead Wires.

Usage Advice: Connect the red lead to the battery positive terminal (+) and the black lead to ground (-); ensure correct polarity before pressing the trigger button.

Maintenance: Keep the board dry and clean of dust, moisture, and flux residue to maintain trigger switch reliability and LED visibility.

Essential Push-to-Test 12V Fuel Gauge: Position as an ideal push-to-test battery gauge for custom 12V 18650 packs, portable power stations, DIY Bluetooth speakers, and 3S RC power kits.

Highlight Energy-Saving Push Switch: Emphasize how the tactile push-button allows users to check battery level instantly without leaving the LEDs constantly powered, saving battery life.

Recommended Cross-Sell Add-ons: Pair with 16.8V 4s Lithium Battery Capacity Tester/Indicator, 8.4V 2s Lithium Battery Capacity Tester/Indicator, 3S Lithium Battery Capacity Indicator, and ESD antistatic mat 50x40CM PCB Welding Mat.

Featured Collection Star: Display prominently on your Battery Capacity and Voltage Meter collection page as your push-button 12V 3S lithium capacity tester.