Feature: 1. Active Capacitance Balance: Using a specially customized control chip, does not detect the pressure difference/designed to work for a long time without shutting down. 2. Current: The quiescent current is as low as 5mA, which can achieve a high accurate equalization of ±5mV, and the equalization current is 2~6A (this refers to the limit current that the circuit board can withstand. In the case of small voltage difference or large internal resistance of the battery, the current is not so Big). 3. High Accurate: The price is lower than similar capacitor products, which keeps each battery balanced and prolongs the service life of the battery. 4. Applicability: With simple indicating switch, it is suitable for people with weak base to operate. 5. Scope of Application: All ternary lithium batteries and iron lithium batteries are universal. Specification: Item Type: Battery Active Balancer Board Product Material: Plastic Model: None Product Size: Approx.47 x 35 x 25mm / 1.9 x 1.4 x 1in Quiescent Current: 5mA Scope of Application: All Ternary Lithium Batteries and Iron Lithium Batteries Are Universal. Package List: 1 x Capacitor Active Balance Board Note: Note 1: Before wiring or connecting the plug, the switch must be turned OFF first After confirming that the wiring sequence is correct, turn the switch to the ON position and start working. 0V is the total negative electrode of the battery pack. Start wiring from 0V in order. If you connect the wrong wire, it will burn the board Note 2: Use a copper wire of 0.3 mm² or more for connection, the thicker the cable, the better, and the shorter the better. (18AGW, 20AWG, 22AWG recommended)Note 3: When working with high current, a slight noise is normal. After connecting the battery for the first time or shutting down for a long time, the startup is slow, please wait patiently. When the switch is turned OFF, the indicator light will not go out immediately because the capacitor has residual power.Note 4: For the 4S version, when used for a 3 string battery pack, the fourth section can be made up with idle small capacity old batteries, otherwise it will be difficult to start or easy to break.