16.8V 4s Lithium Battery Capacity Tester/Indicator

4-Series (4S) 16.8V Lithium Calibration: Specially tuned for 4-cell (4S) 14.8V nominal and 16.8V 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:

14.8V (1 bar): 25% capacity

15.4V (2 bars): 50% capacity

16.1V (3 bars): 75% capacity

16.8V (4 bars): 100% capacity

Tactile Power Test Button: Integrated red micro-switch enables users to activate the LED display on demand, conserving battery reserve when active monitoring is not required.

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

Pre-Wired Lead Cables: Comes pre-equipped with flexible red (+) and black (-) lead wires for quick, direct soldering or connection to battery terminals and power buses.

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

Technical Specifications:

Series Configuration: 4S (4 Cells, 14.8V nominal / 16.8V peak).

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

Operating Voltage Range: 13.2V – 16.8V DC.

Color: White Board with Black/Red Lead Wires.

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

Maintenance: Keep the board clean and free of flux residue, dust, and moisture to ensure reliable switch operation and clear LED visibility.

Essential Push-to-Test 16.8V Fuel Gauge: Position as a convenient push-to-test battery gauge for custom 16.8V 18650 power tool batteries, portable power banks, 4S RC ground models, and DIY robotics.

Highlight Energy-Saving Push Switch: Emphasize how the integrated tactile push-button lets users inspect battery charge instantly without leaving the display permanently lit, preserving cell life.

Recommended Cross-Sell Add-ons: Pair with 12V 3s Lithium Battery Capacity Tester/Indicator, 8.4V 2s Lithium Battery Capacity Tester/Indicator, 4S 3.7V 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 16.8V 4S lithium capacity tester.