UM4 4-SLOT CHARGER - NITECORE

UM4 4-Slot Charger - Nitecore

The Nitecore UM4 turns charging multiple batteries into a clear operation thanks to its four slots and LCD screen. It displays the essential information for each cell and suits users who rotate several pairs of batteries.

The total power reaches 3,000 mA and is automatically distributed among the occupied slots. With a suitable QC power supply, it can deliver up to 1,500 mA on one or two slots, while temperature regulation monitors the session.

Why choose the UM4?

• Four independent slots and LCD screen
• Automatic current distribution based on installed batteries
• Multi-chemistry compatibility and QC fast charging

Technical specifications

• Brand: Nitecore
• Type: battery charger
• Number of slots: 4
• Maximum total power: 3,000 mA
• QC mode: up to 1,500 mA x1 or x2, 750 mA x4
• Compatibility: Li-ion, IMR, LiFePO4, Ni-MH, and Ni-Cd
• Common formats: 18650, 20700, and 21700
• Thermal regulation and LCD screen

Compatible batteries

Always check the format, length, and chemistry of the battery before charging. Find suitable references in the batteries and chargers for e-cigarettes collection.

Safety tips

Inspect the insulating wrap before each use, respect polarity, and place the charger on a stable surface. Do not use a damaged battery and do not leave charging unattended for extended periods.

A monitoring station for multiple batteries

The UM4 is suitable for heavy rotation: multiple pairs for different mods, spare batteries, or compatible rechargeable cells used in other devices. The screen lets you browse data from all four slots and more easily identify the selected cell. When all slots are occupied, the available current is distributed; so you must distinguish total capacity from per-slot intensity. To avoid mixing, keep pairs together and never combine two batteries of different ages, capacities, or brands in a dual-battery mod.

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