4S 2A Active Balancer NMC/LFP
Description:
DG-4S 2A Inductive Active Balancer – 4S LFP/NCM Battery Pack Equalizer
The DG-4S 2A is a high-efficiency, self-powered inductive active balancer designed for 4S LiFePO₄ (LFP) or NCM lithium battery packs. Using intelligent energy transfer, this balancer rapidly equalizes voltage differences between cells, significantly improving pack longevity, capacity, and safety. No external power supply is needed—the balancer uses the battery's own energy for operation. Suitable for e-bikes, solar storage, DIY packs, and high-demand applications where accurate cell balancing is essential.
| Parameter | Specification |
| Product Model | DG-4S 2A |
| Supported Cells | 4S (4-series) |
| Applicable Battery Type | NCM / LiFePO₄ (LFP), Teernary Lithium |
| Cell Voltage Range | 3.0V – 4.2V (per cell) |
| Balance Method | Inductive energy transfer, auto-activation on >0.1V cell difference |
| Balance Current | 0.5A–0.7A (for 0.2V < difference < 0.1V), Up to 2A (for adjacent voltage difference >0.2V) |
| Balance Accuracy | ±30mV (0.03V typical) |
| Product Size | 5cm × 3.2cm |
| Product Weight | 10g |
| Grade/Pads Plating | FR-4 PCB, lead-free, hot air solder |
| External Power Supply | Not required (self-powered) |
| Quiescent Current | <10μA |
| LED Indicator | Yes (lights ON when balancing; OFF when idle) |
| Operating Temperature | -20°C to +60°C |
| Wiring | Connect directly to each cell tap |
| Applications | E-bike, solar ESS, DIY battery packs, powerwall, robotics, power tools |
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