NITECORE UMS4 Intelligent QC 4-Slot Charger — Fast Independent Slot Charging

Overview

NITECORE UMS4 is a QC input capable intelligent four-slot charger designed for versatility and efficiency. It delivers a total max output of 4000 mA with each slot capable of up to 3000 mA, enabling four batteries to be charged simultaneously with independent control. Real-world use shows how a single session can refresh multiple cells quickly, helping you stay prepared for daily tasks, outdoor adventures, or hobby projects. The design prioritizes practical performance, adapting to your battery mix without sacrificing convenience.

Smart, adaptive charging

The LCD display provides real-time insights into battery health, internal resistance, charging current, voltage, charged volume, and estimated charging time. The charger automatically detects battery power level and selects the appropriate voltage and charging mode, then switches between CC, CV, and -dV/dt as needed. You can also manually adjust charging parameters to suit specific needs or preferences.

• Automatic power level detection and voltage/mode selection for seamless use
• Three charging modes: CC, CV, and -dV/dt with optional manual tweaking
• Independent slot control so four batteries can be managed in parallel

Performance and safety

UMS4 includes an optimized IMR charging program that monitors the process and keeps the cut-off within safe limits to help extend battery life. It supports 3.6V/3.7V Li-ion, 3.8V Li-ion, 1.2V Ni-MH/Ni-Cd, and 3.2V LiFePO4 chemistry. A suite of safeguards—automatic internal resistance checks, anti-short-circuit protection, reverse polarity protection, and over-discharge restoration—helps maintain reliability. A fire-retardant PC shell and a built-in temperature regulation system help prevent overheating during longer sessions.

• Automatic resistance detection, short-circuit protection, and reverse polarity safeguards
• Overtime charging protection and over-discharged IMR restoration
• Durable fire-retardant construction with temperature regulation

Power on the go

The USB-C input expands your charging options, compatible with mobile power banks, solar panels, and traditional USB adaptors. This flexibility makes UMS4 suitable for home, workshop, or travel use, keeping your batteries ready when you need them most. The device's compact footprint and independent-slot logic support a tidy, efficient charging setup wherever you are.

What you gain

Rather than promising fixed outcomes, the UMS4 presents practical possibilities: faster turnaround for mixed chemistries, clearer visibility into battery health, and safer charging across multiple cells at once. If your workflow includes multiple batteries or devices, UMS4 can help streamline the process without locking you into a single chemistry or a single charging profile.