BMS 1.5A 3S 4S 5S 6S 7S 8S 13S 14S 17S 21S Li-ion Lifepo4 LTO Lithium Battery Active Equalizer Balancer Board Balance Capacitor

Features:Up to 1.5A equalization current for efficient balancing with low power consumptionStable, mature, and reliable circuit design eliminates common failure risks (equalization current may vary with battery voltage differences)Low-resistance high-frequency ceramic capacitors selected for optimal performance and enhanced reliability(Capacitor appearance, packaging, and specifications may vary by batch)Low heat generation, high reliability, and high precision. Suitable for internal integration within battery packs or external balancing during battery maintenance. Balancing accuracy reaches 3mV.Wiring plug with matching 24AWG pure copper connection cable plug (30cm length).Capacitive lithium battery active balancing module for voltage equalization between lithium battery cells. Operates independently from protection boards without mutual interference. Suitable for battery packs, maintenance, and DIY battery assembly.Product Parameters:Product Specifications: 3S, 4S, 5S, 6S, 7S, 8S, 13S, 14S, 17S, 21SBalancing Current: Max 1.5A (varies with voltage difference, internal resistance, wire resistance, etc.)Balancing Accuracy: 3mVCompatible Batteries: Universal for Lithium Iron Phosphate (LiFePO4) and Ternary Lithium BatteriesIncluded Cable: 22AWG approx. 30CMNote: Except for 8S, which cannot be used in a reduced series configuration, other specifications can be used with one fewer cell.Product List:1X Module Circuit Main Unit1X Connection Cable 22AWG Approx. 30CMFrequently Asked Questions:Q1: Differences from Similar ProductsA1: Resistor-Based Passive Equalization (Advantages: Low cost, compact size, stable; Disadvantages: Low efficiency, high heat generation)Inductive active equalization (Advantages: Reasonably priced, compact size. Disadvantages: Poor stability, prone to failure, average precision)Transformer-based active equalization (Advantages: High precision, high stability. Disadvantages: Bulky, high cost)Capacitive active equalization (Advantages: Reasonably priced, high stability, low heat generation, high precision, high efficiency. Disadvantages: Thicker circuit board)Q2: Wiring RulesA2: Start wiring from 0V (common negative terminal) in sequence. Leaving 0V (common negative terminal) floating under any condition can easily cause board burnout. Verify wiring sequence—incorrect sequence will burn the board!Q3: Consequences of Incorrect WiringA3: The result is almost always board burnout. Even “experienced technicians” can make mistakes due to overconfidence, so meticulous operation is paramount.Q4: Wiring Material PrinciplesA4: Use 22AWG (0.3mm²) cables as standard. Prioritize sufficient length—shorter is better.Q5: Module Power Consumption?A5: Ultra-low power consumption at 1.5mA, ideal for continuous operation without shutdown. The LED remains constantly lit. When cell voltage drops below 2.5V, the module enters sleep protection mode to prevent battery over-discharge. (Sleep mode power consumption as low as 5μA)Q6: Equalization CurrentA6: The equalization module can withstand a maximum current of 2A. Actual current may be lower under conditions of small voltage difference, high battery internal resistance, or high connection wire resistance. The 2A board has an equivalent internal resistance of 480 milliohms. {Total equalization current = Voltage difference / (Battery internal resistance + Connection wire resistance + Equalization board equivalent internal resistance)}.Q7: Operating TemperatureA7: The circuit operates with high efficiency and low heat generation, typically functioning within 30-45°C.Q8: Lifespan of the Balancing BoardA8: Products undergo rigorous testing before shipment. Under normal conditions (excluding damage caused by moisture exposure, water immersion, reverse polarity, incorrect sequencing, overvoltage, or static electricity), capacitors have a lifespan of 3-5 years (replace capacitors if bulging is observed). The lifespan of chips, resistors, and transistors generally exceeds human lifespan.