# Battery Charger Nitecore UM4 — 4‑slot charger for LiFePO4 / Li‑ion / Ni‑MH / Ni‑Cd, supports AA AAA AAAA C D, 9V DC input, black

**URL:** https://aio.lv/en/product--nitecore-um4--3070026
**Data updated:** 2026-01-13 17:38 (EET)
**Category:** Battery chargers
**Manufacturer:** Nitecore
**Manufacturer code:** UM4
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 34.99 €
**Prices and availability valid until:** 2026-07-18 23:59
**Price without VAT (21%):** 28.92 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--nitecore-um4--3070026

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.99 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The Nitecore UM4 is a 4‑slot multi‑chemistry battery charger compatible with LiFePO4, Li‑ion, Ni‑MH and Ni‑Cd cells. It accepts AA, AAA, AAAA, C and D sizes and runs from a 9V DC input with a 4.35V output. Designed for household and general‑purpose use, the compact black unit charges multiple battery types safely and conveniently. Each pack contains one charger.

## Long description

The Nitecore UM4 is a compact 4‑slot battery charger designed for household and general‑purpose charging of multiple cell chemistries. It supports LiFePO4, Li‑ion, Ni‑MH and Ni‑Cd batteries and accommodates AA, AAA, AAAA, C and D sizes. The unit operates from a 9V DC input and provides a 4.35V output suitable for the supported chemistries, offering a small, black charger that can manage up to four cells simultaneously.
Advantages
The charger accepts multiple battery chemistries and common cylindrical sizes, reducing the need for separate chargers. With four independent slots, it allows different batteries to be charged at the same time. Its 9V DC input and compact footprint make it convenient for home use and storage, while the black finish provides a neutral, unobtrusive appearance. The design focuses on practical, multi‑chemistry compatibility and straightforward operation.
Suitable for
Home charging of AA, AAA and other supported rechargeable cells
Maintaining spare batteries for household devices such as remotes, toys and flashlights
Charging mixed battery sizes and chemistries simultaneously
Small workshop or hobby setups where compact multi‑slot charging is needed
Key specifications
Number of cells supported simultaneously: 4
Supported chemistries: LiFePO4, Li‑ion, Ni‑MH, Ni‑Cd
Compatible sizes: AA, AAA, AAAA, C, D
Input: 9V DC
Output voltage: 4.35V
Product colour: Black
How to use
Insert batteries into the slots observing polarity markings on the charger and on the cells. Connect a suitable 9V DC power supply to the charger’s input before beginning charging. The charger can be left to charge up to four batteries at once; monitor charging progress according to the charger’s indicators and disconnect when charging is complete. Use cells that match the supported chemistries and sizes specified for safe operation.
Usage recommendations
Use a manufacturer‑recommended 9V DC adapter and place the charger on a non‑flammable, level surface during use. Avoid charging damaged or swollen cells and separate battery types only when they comply with the supported chemistries and sizes listed. Store the charger in a dry environment when not in use.

## Specifications

### Power

| Feature | Value |
|---|---|
| Input voltage | 9 |
| Output voltage | 4.35 |

### Battery

| Feature | Value |
|---|---|
| Batteries included | No |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |

### Packaging content

| Feature | Value |
|---|---|
| Quantity per pack | 1 pc(s) |

### Features

| Feature | Value |
|---|---|
| Number of batteries supported | 4 |
| Compatible battery sizes | AA, AAA, AAAA, C, D |
| Compatible battery technologies | Lithium-Ion (Li-Ion), Nickel-Cadmium (NiCd), Nickel-Metal Hydride (NiMH), Lithium Iron Phosphate (LiFePo4) |
| Compatible products | IMR/Li-ion/LiFePO4: 10440, 14500, 14650, 16500, 16340(RCR123), 16650,
17350, 17500, 17650, 17670, 17700, 18350, 18490,
18500, 18650, 18700, 20700, 21700, 22500, 22650,
25500, 26500, 26650, 26700
Ni-MH/Ni-Cd: AA, AAA, AAAA, C, D |
| Power source type | DC |
| Suitable for | Household battery |

## FAQ

### How much does the Nitecore UM4 Battery Charger — 4‑slot cost, and is it available for purchase?

The price is 34.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 9 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 15.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Nitecore products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Nitecore service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: number of batteries supported, product colour, compatible battery sizes, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

### Where can I download the instructions for Nitecore UM4 Battery Charger — 4‑slot?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/3070026/53778745_large.webp