Heltec 3S/4S/5A Active Balancer Voltage Tester – Real-Time Battery Monitoring
Precision-engineered active balancer with ultra-fast 5A balancing current for LiPo/LiFePO4/LTO batteries. Features high-accuracy voltage detection (0.01V resolution) and OLED display for real-time condition tracking. Durable anodized aluminum casing with heat-resistant PCBs ensures stable performance in extreme conditions (-20°C to 60°C). Ideal for RC models, solar storage, EV conversions, and industrial battery maintenance. Plug-and-play design with low-energy MOSFETs minimizes voltage drift. Supports 3S-4S configurations (8.4V-16.8V). Compact (85x45x20mm) and lightweight (60g) for portable use. Global wholesale pricing with bulk discounts. Compatible with major battery brands. Ships worldwide from certified warehouses.