The 3300W Sealed Portable Battery Charger is a high-performance, IP65-rated solution designed for reliable and efficient battery charging across a wide voltage range. With an input of 90V–276V AC (max 450V AC) and an output of 36V–84V DC up to 60A, it delivers over 93% efficiency and maintains ultra-low noise levels under 55dB. Built with advanced PFC+LLC circuit architecture and supporting CAN2.0B communication, it ensures intelligent charging management, robust battery protection, and efficient heat control. Enhanced with surge protection up to 4KV, a power factor above 0.96, and OTA update capability, this sealed portable charger is engineered for durability, safety, and optimal performance in demanding environments.