4S 14.8V Battery Level Indicator 18650 Lithium Battery Capacity Tester and Percentage Detection Monitor

A 4S Battery Level Indicator for 18650 lithium batteries is a device designed to monitor and display the charge level of a 4-series (4S) lithium-ion battery pack, which typically operates at a nominal voltage of 14.8V (3.7V per cell) and can reach up to 16.8V when fully charged. 

Features: 

1. Battery Compatibility: Specifically designed for 4S lithium-ion battery packs, with a nominal voltage of 14.8V and a fully charged voltage of 16.8V. 
2. LED Display:The indicator uses 4 LED segments to show the battery's charge level 25%, 50%, 75%, and 100% charge. 
3. Low Power Consumption: Operates with minimal current draw (around 15mA), ensuring the battery isn't drained significantly by the indicator. 
4. Reverse Polarity Protection: The indicator includes a protective feature that prevents damage if the connections are reversed during installation. 
5. Compact Design: Measures just 40×15×3 mm, making it easy to integrate into various devices without taking up much space. 
6. Working Temperature: Functions in a wide temperature range of -10°C to 65°C, suitable for various environments and conditions. 
7. Easy Installation: The indicator is easy to connect with the positive and negative leads corresponding to the battery's terminals, providing instant feedback on the charge level 

Package Includes :  

1 x 4S 14.8V Battery Level Indicator 18650 Lithium Battery Capacity Tester and Percentage Detection Monitor