# Portable Power Bank DUDAO 20000mAh 2xUSB-A

**URL:** https://aio.lv/en/product--dudao-k4s-black--10495235
**Data updated:** 2025-12-30 08:44 (EET)
**Category:** Power Banks
**Manufacturer:** Dudao
**Manufacturer code:** K4S+-black
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 16.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 14.04 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dudao-k4s-black--10495235

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The DUDAO power bank features a 20000mAh capacity and 5V voltage, providing reliable power on the go. With two USB Type-A output ports, you can charge multiple devices simultaneously at 10W. Its sleek black design makes it a stylish accessory for your tech needs.

## Long description

DUDAO Portable Power Bank 20000mAh in black delivers portable battery backup with a 5V output and a total capacity of 20000 mAh. The compact power bank includes two USB-A output ports that allow simultaneous charging of two devices at up to 10 W per device cumulatively using standard USB-A cables. Its neutral black finish suits everyday carry and travel use.
Advantages
The DUDAO power bank offers high-capacity 20000 mAh storage for extended device charging, two USB-A output ports for charging multiple devices at once, and universal compatibility with USB-powered smartphones and accessories. Its 5V/2A charging characteristics provide stable power delivery, and the black housing is practical and unobtrusive.
Suitable for
 Charging smartphones and basic mobile devices on the go
 Powering tablets or accessories during travel (subject to device power draw)
 Keeping two devices charged simultaneously during daily commuting
 Use as a backup power source during short power outages or outdoor activities
Key specifications
 Brand: Dudao
 Model / MPN: K4S+-black
 Battery capacity: 20000 mAh
 Output ports: 2 × USB-A
 Output power: up to 10 W (total)
 Output voltage / current: 5 V / up to 2 A
 Colour: Black
 Charger compatibility: Universal (USB-powered devices)
How to use
Connect your device to one of the USB-A output ports using an appropriate USB-A to device cable. The power bank supplies 5V output and will begin charging compatible devices automatically. For best results, charge devices one at a time if they require higher current; otherwise two devices can be charged simultaneously. Recharge the power bank itself via a compatible USB input charger (use a charger that matches the power bank's input specifications) and disconnect once fully charged.
Usage recommendations
The power bank is suited for charging smartphones, small tablets, and USB accessories. Avoid exposing the device to extreme temperatures, moisture, or impacts. Use quality cables and chargers and avoid leaving the power bank at very low charge for prolonged periods to prolong its service life.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Battery voltage | 5 V |
| Fast charging | No |
| Wireless charging | No |
| Charging source | USB |
| Built-in radio | No |
| USB Power Delivery (USB PD) | Yes |
| USB Power Delivery up to | 10 W |

### Power

| Feature | Value |
|---|---|
| Input voltage | 5 |
| Input current | 2 |
| Port 1 output power | 10 W |
| Port 2 output power | 10 W |

### Ports & interfaces

| Feature | Value |
|---|---|
| Input interface | Micro-USB + USB Type-C |
| USB Type-A output ports | 2 |
| USB Type-A connector | Yes |

### Design

| Feature | Value |
|---|---|
| Product colour | Black |
| Charger compatibility | Universal |
| Shape | Rectangle |
| Number of simultaneously connected devices (max) | 2 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Height | 2.5 mm |
| Width | 7 mm |
| Depth | 13.7 mm |
| Micro-USB cable length | 130 mm |

### Battery

| Feature | Value |
|---|---|
| Battery capacity | 20000 mAh |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | Micro-USB |

## FAQ

### How much does the Power Bank DUDAO K4S+ cost, and is it available for purchase?

The price is 16.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 50 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 09.07.2026 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 Dudao 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 Dudao 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 simultaneously connected devices (max), battery capacity, charger compatibility, product colour, 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.

## Image

https://aio.lv/img/cache/product/10495235/65650659_large.webp