Nitecore UMS4 Battery Charger For those who demand more from their battery charger, the Nitecore UMS4 offers advanced capabilities and rapid charging that outpaces standard models like the Nitecore D2. With its high-speed output and ability to charge up to four batteries simultaneously, the UMS4 is designed for power users and professionals who need reliable, fast, and detailed charging solutions. Key Features: High-Speed Charging: Unlike the Nitecore D2, the UMS4 provides a blistering 3,000mA maximum output, ensuring your batteries are charged in record time. This makes it perfect for users with high-demand devices who can't afford to wait. Quad Charging Bays: With four independent charging bays, the UMS4 allows you to charge up to four batteries simultaneously, making it a step above the dual-bay Nitecore D2. Each bay is independently monitored to ensure precise charging for each battery. Enhanced Compatibility: While the D2 supports a broad range of battery types, the UMS4 takes it further with support for larger sizes like 21700 and 26650, catering to advanced Li-ion and IMR battery users. Intelligent Charging System: The UMS4’s microprocessor-controlled charging adapts to each battery's type and status, adjusting voltage and current for optimal performance—perfect for those who need detailed, intelligent charging. Advanced LCD Display: The UMS4 features a real-time LCD screen that goes beyond the basics, offering comprehensive data on voltage, current, temperature, and battery health, providing you with the information you need to manage your power effectively. Superior Safety Features: Equipped with multiple protections, including overcharge, over-discharge, and short circuit safeguards, the UMS4 ensures that your batteries are charged safely and efficiently, even under heavy use. Whether you're charging batteries for high-drain devices or managing multiple power sources, the Nitecore UMS4 delivers the speed, capacity, and intelligence you need to stay powered up and ready for anything. For users who find the Nitecore D2 reliable but need more power and control, the UMS4 is the ultimate upgrade.