Nitecore UMS4 Four-Slot USB Battery Charger

Four-Slot: The Nitecore UMS4 is a USB-powered charger listed for rechargeable Li-ion, IMR, LiFePO4, Ni-MH and Ni-Cd batteries. Its four slots and automatic battery detection suit people charging several supported battery types, though the listing does not clearly reconcile its charging-current claims.

At a glance

Four charging slots are listed for rechargeable batteries across several chemistries.
The charger claims automatic battery charge-level detection and automatic selection of voltage and charging mode.
USB connection is listed, with a 5 Volts input.

Price

€35.99Save 28%

Reference price: ~~€50.27~~

Price checked: 14 Nov 2026

View offer

Often bought together

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€29.90

Pros and cons

Pros

Four slots can accommodate several batteries in one charging session.
The listing names Li-ion, IMR, LiFePO4, Ni-MH and Ni-Cd rechargeable batteries as compatible.
Automatic detection and charging-mode selection may reduce manual setup.

Technical specifications

13 specifications

Identity
Brand	Nitecore
Model	UMS4
Colour	Black

Charging and compatibility
Number of ports	4
Compatible devices	Devices that use Li-Ion, IMR, LiFePO4, Ni-MH and Ni-Cd rechargeable batteries
Cable connector type	USB
Input voltage	5 Volts
Current rating	3000 Milliamps
Listed battery charge time	55 Minutes
Specification met	CE

Dimensions and weight
Listed dimensions	19D x 15W x 5H centimetres
Weight listed	250 Grams

Availability
EU spare part availability duration	1 Years

What to know before buying

Listing details to confirm

The listing is inconsistent about charging current: the title and details give 3000 Milliamps, one feature describes a 3000mA single-slot output, and the description says four 3000mA ports. Confirm the applicable per-slot and total output for the selected listing. The listed 55-minute charge time has no stated battery size or test conditions. Dimensions and weight are listing claims.

Who is it for?

A good fit for

People who charge multiple supported rechargeable batteries.
Users seeking a USB-powered charger with automatic battery detection.

Less suited to

Buyers who need a clearly confirmed per-slot or combined charging-current specification.
Anyone needing a charger for battery types not stated as compatible.

Nitecore UMS4 Four-Slot USB Battery Charger · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 881 ratings

5 stars78%78%
4 stars12%12%
3 stars6%6%
2 stars1%1%
1 star3%3%

Customer feedback highlights reliability, functionality and USB charging as positives, while reported experiences with charging speed and ease of use are mixed. Some feedback mentions charging 18650 batteries quickly and recovering over-discharged IMR batteries, but another report describes the charging port breaking and making the unit unusable. For buyers choosing this four-slot USB charger, the mixed speed reports reinforce the importance of checking the stated current for the intended slot configuration.

Positive themes

Customers describe the charger as reliable and functional.
USB charging and ease of use are appreciated by some customers.

Negative themes

One reported experience describes the charging port breaking and leaving the charger unusable.

Mixed feedback

Feedback on charging speed and ease of use is mixed.
Battery-related feedback is mixed, including a report of recovering over-discharged IMR batteries.