Mini Power Display Indicator 1S 2S 3S 4S Li Battery Percentage Display Module
USD 4.22 USD
Specifications
| Optional | With button |
| Brand | Unbranded |
| Marke | Markenlos |
Features a smart button. Upon power-up, the device first detects the number of battery cells; at this point, it defaults to Mode 0. A short press (less than 3 seconds) of the smart button serves as the power on/off function, while a long press (3 seconds or longer) switches modes, allowing you to switch to Mode 1.