Warm sound reminder: This model is not waterproof, if you use it outdoors, please make it waterproof, because the electronic components need to be used in a dry environment.
Lithium, lead-acid, nickel-metal hydride battery can be used to display the battery.
How to use: 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
Display battery parameters:
The battery voltage is greater than N×3.3V, and the power is on 1 grid (Note: N represents the number of battery cells) (The following data is a reference value, there will be an error range of about 2%, and high requirements do not shoot)
The battery voltage is greater than N×3.5V, and 2 bars are on
The battery voltage is greater than N×3.7V, and 3 bars are on
Battery voltage is greater than N×3.9V, 4 bars of power on
If the battery voltage is less than N×3.3V, all 4 segments are off, indicating that the battery is lower than 3.3V, and it is time to charge the battery.
The color of the digital tube: the outer frame is red, the inner display grid is yellow-green and blue for two options, the battery is fully charged and the 4 grids are all bright