Nitecore USB Charger UM4 4-Bay Battery Charger

Nitecore USB Charger UM4 – 4-Bay Universal Battery Charger with USB-C Power

The NiteCore UM4 is a 4-bay USB battery charger capable of charging up to four batteries simultaneously. It supports a wide range of rechargeable battery chemistries and sizes, making it a versatile charging solution for hobbyists, professionals, and households.

• Charges 4 batteries at once, saving time compared to single-bay chargers
• USB-C power input for modern, universal compatibility with USB-C power banks and adapters
• Supports 10 battery chemistries including LiFePO4, Li-Ion, NiCd, and NiMH
• Covers 25 battery sizes from AAA to 26700, handling most common rechargeable formats

What sets the NiteCore UM4 apart

Unlike basic single-bay chargers, the UM4 charges up to four batteries in parallel, reducing downtime when multiple cells need replenishing. The broad chemistry and size compatibility means one charger replaces several dedicated units, simplifying the charging setup for users with mixed battery collections.

Ideal for

Photography enthusiasts, RC hobbyists, and households with multiple rechargeable devices. Also suited for workshop and field use where a reliable, multi-bay charger with USB-C input is needed to keep batteries ready without dedicated wall adapters for each cell type.

Application of the NiteCore UM4

1. Insert up to four rechargeable batteries of the same or different chemistries into the four bays
2. Connect the charger to a USB-C power source (power bank, wall adapter, or computer)
3. The charger automatically detects battery type and selects the appropriate charging profile
4. Charging completes automatically; remove batteries once the indicator signals full charge