1S -8S Lithium Battery Capacity capacity Indicator Module 3V-34V Tester Li-po Li-ion 

Working voltage: 3V-34V 

Working current: 5mA  

Operating temperature: -20°C~50°C 

Colour:Blue Green 

Voltage error: 2% (do not shoot if higher accuracy is required) 

Module Size: 43.5mm x 20mm 

Instructions:
Connect the positive and negative terminals of the display board to the positive and negative terminals of the battery under test, and the digital tube will display the real-time battery power. 

1. Electromagnetic power display, select the corresponding pad to tin, you can detect the voltage of the battery pack corresponding to 1S~8S, which is very convenient. (S1~S8 optional pads can only be connected to one type, and 2 or more simultaneous short-circuits are not allowed at the same time) 

2. Application areas: Lithium batteries from 1S to 8S, batteries with corresponding voltages can be used (see the table for details) 

3. How to use: Connect the positive and negative ports of the display board to the positive and negative ports of the battery under test, and the digital display tube will display the real-time battery level. Note that if several strings of lithium batteries are connected in series, tin should be connected to the corresponding pads.
For example: if the test is a 2S battery (that is, two 3.7V lithium batteries are connected in series), you need to short-circuit the tin on the pad corresponding to S2 of the board 

4. Pay attention to select the corresponding number of battery strings, and use it within the corresponding voltage range. The maximum limit should not exceed the voltage of 4.3*N. (For example, if the pad of S3 is selected to be tinned, the maximum voltage detected by the module should not exceed 4.3*3=12.9V)
When the battery voltage is greater than N×3.3V, 1 grid of power is on (Note: N represents the number of battery cells)