3S 18650 Lithium Battery Capacity Indicator Module Level Tester LED

From the shop's description

3S 18650 Lithium Battery Capacity Indicator Module Level Tester LED An Intelligent electricity quantity display board; slightly push trigger switch, it will auto power off after 3 seconds display. LED Indication: 25% –>First Light is on (Voltage: 3.1 V) 50% –>Second light is on (Voltage: 6.3 V) 75% –>Third light is on (Voltage: 9.4 V) 100% –>Fourth light is on (Voltage:12.6 V) Features: The intelligent power display panel Static power consumption 2~3 mA, It’s negligible Power indication(The color of the lamp is green) Package Includes: 1 x 3S 18650 Lithium Battery Capacity Indicator Module Level Tester LED Item Type: Battery Testing Equipment Model: Battery Level Indicator/Monitor Voltage Rating (V): 9 to 12.6 Compatibility: Lithium Battery Additional Specs.: Static Current Consumption: 2~3 mA Color: Blue Length (mm): 50 Width (mm): 10 Height (mm): 10 Weight (g): 15 Shipping Weight 0.02 kg Shipping Dimensions 5 × 1 × 1 cm