1、MAIN PURPOSE: This balance protection board is suitable for farad capacitors and lithium titanate batteries with a voltage of 2.7V, which is efficient and practical. 2、FINE TUNING RANGE: The protection voltage can be fine tuned within 2.5V‑3V by replacing the voltage divider resistor (higher balanced voltage requires high resistance power resistor). 3、WORKING PRINCIPLE: When the single battery or capacitor voltage higher than the balance voltage, the circuit opens the triode for discharge, excess electricity through the power resistance into heat dissipation out. 4、SIMPLE WIRING: The single protection board is suitable for any 1‑6S battery or capacitor. When it is less than 6S, connect it from the negative pole, and the excess wires can be left empty. 5、GOOD PERFORMANCE: The protection board is equipped with indicator light, clear and intuitive, the circuit balance voltage accuracy is ±1%, and equipped with connecting wire, easy to connect and use. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.