Nitecore UMS4 4-Slot USB Battery Charger
- 4 slots
- Up to 3000mA single slot with a QC adapter
- 2000mA max total on a 2A USB adapter
- Li-ion, IMR, LiFePO4, Ni-Cd, Ni-MH
- 18650, 16340, 14500 sizes among others
- LCD shows battery health and charge status
- QC 3.0 adapter included
Updated 25 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A smart USB charger for flashlight and vape battery users who mix chemistries and sizes, with a screen that reports battery health. Charging is fastest only on the included quick charge adapter.
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ASIN: B07QMP3L2XModel: UMS4Category: Battery Chargers
Overview
Flashlight collectors' workbenches and gear drawers suit this Nitecore charger, which takes four batteries of different chemistries at once. It picks the right current and voltage on its own and shows progress on an LCD.
Automatic detection across lithium and nickel chemistries means one charger covers a mixed collection. Speed depends on the power source, and a plain USB adapter cuts the current sharply.
Who it's for
Owners of high-drain flashlights and tools running cylindrical lithium cells get fast, monitored charging. Casual users with a few household batteries will not use most of it.
Pros and cons
- Four independent slots
- Handles lithium and nickel chemistries
- LCD shows battery health
- Quick charge adapter included
- Full speed needs the QC adapter
- Total current shared across slots
- No car or wall plug besides USB
- Battery sizes list is partial
Performance notes
Charge speed depends on the USB power supply: a quick charge adapter allows the highest single slot current, while a standard adapter caps the total shared by all slots. The charger reads each cell and sets current and voltage to suit it. The LCD reports health so worn cells can be retired.
Specifications
| Brand | Nitecore |
|---|---|
| Model | UMS4 |
| Dimensions & fit | |
| Item Dimensions D X W X H | 1.61 x 4.21 x 6.26 in |
| Compatible battery sizes | 18650, 16340, 14500 |
| Item weight | 9.01 ounces |
| Capacity & performance | |
| Output Voltage | 4.35 V DC |
| Output Current | Up to 3000mA single slot (QC), 2000mA total (2A USB) |
| Power & efficiency | |
| Battery Cell Type | Li-ion, IMR, LiFePO4, Ni-Cd, Ni-MH |
| Construction & materials | |
| Color | Black |
| Included components | |
| Included Components | LumenTac QC 3.0 charging adapter |
| Other details | |
| Number Of Ports | 4 |
| Connector Type | USB, QC3.0 |
| Display | LCD |
Frequently asked questions
Is the Nitecore UMS4 a power bank?
No power bank function is described. It is a four slot charger powered from a USB adapter.
How fast does the Nitecore UMS4 charge?
With a quick charge adapter a single slot reaches 3000mA. On a 2A USB adapter the total is 2000mA across all slots.
Can the UMS4 charge Ni-MH batteries?
Yes. It works with Li-ion, IMR, LiFePO4, Ni-Cd and Ni-MH and selects the charging current and voltage automatically.
Does the UMS4 include a wall adapter?
Yes. A LumenTac QC 3.0 charging adapter is included.