# Goobay 53939 Power Bank Lithium Polymer 20000 mAh

**URL:** https://aio.lv/en/product--wentronic-53939--4455717
**Data updated:** 2025-12-29 17:22 (EET)
**Category:** Power Banks
**Manufacturer:** WENTRONIC
**Manufacturer code:** 53939
**EAN:** 4040849539398
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 31.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wentronic-53939--4455717

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Goobay 53939 power bank features a high capacity of 20000 mAh with Lithium Polymer technology for efficient energy storage. It supports Quick Charge 3.0 for fast charging and has a voltage of 3.7 V. With 1 USB Type-A and 2 USB Type-C output ports, it delivers a current of 2 A, making it versatile for multiple devices. Its sleek black design adds a modern touch to your tech accessories.

## Long description

Goobay 53939 Power Bank Lithium Polymer 20000 mAh is a high-capacity portable battery designed for charging multiple mobile devices. It uses Lithium Polymer technology and provides a nominal voltage of 3.7 V. The compact black power bank includes one USB Type-A and two USB Type-C output ports and supports Quick Charge 3.0 for faster recharging of compatible devices.
Advantages
This power bank offers a large 20000 mAh capacity for extended use between charges, compatibility with Quick Charge 3.0 for accelerated charging, and three output ports to charge up to three devices simultaneously. Its Lithium Polymer battery chemistry provides efficient energy storage in a relatively compact and lightweight (0.374 kg) housing. The black finish delivers a neutral, modern appearance suitable for everyday use.
Suitable for
Charging smartphones and mobile phones
Powering tablets and e-readers
Recharging headphones and headsets
Key specifications
Battery capacity: 20000 mAh
Battery type: Lithium Polymer
Nominal voltage: 3.7 V
Output ports: 1 × USB Type-A, 2 × USB Type-C
Maximum simultaneously connected devices: 3
Output current: up to 2 A per port (as specified)
Quick Charge: compatible with Quick Charge 3.0
Colour: Black
Weight: 0.374 kg
How to use
Charge the power bank fully before first use using an appropriate USB charger (observe Quick Charge compatibility for faster recharging). Connect devices to the available USB Type-A or USB Type-C output ports using their charging cables. The power bank can charge up to three compatible devices at the same time; monitor device charging status and disconnect when charging is complete. Recharge the power bank when its remaining capacity is low.
Usage recommendations
For optimal performance, use suitable charging cables and a charger that supports the power bank's input specifications. Avoid exposing the power bank to extreme temperatures and store it partially charged if not used for extended periods. Refer to device manuals for Quick Charge 3.0 compatibility details.

## Specifications

### Sustainability

| Feature | Value |
|---|---|
| Sustainability compliance | Yes |

### Design

| Feature | Value |
|---|---|
| LED indicators | Status |
| Product colour | Black |
| Housing material | Aluminium |
| On/off switch | Yes |
| International Protection (IP) code | IP20 |
| Charger compatibility | Headphones/Headset, Mobile phone/Smartphone, Tablet |
| Shape | Rectangle |
| Number of simultaneously connected devices (max) | 3 |

### Battery

| Feature | Value |
|---|---|
| Battery technology | Lithium Polymer (LiPo) |
| Battery capacity | 20000 mAh |

### Ports & interfaces

| Feature | Value |
|---|---|
| Input interface | Micro-USB + USB Type-C |
| Micro-USB connector | Yes |
| USB Type-A output ports | 1 |
| Micro-USB connectors quantity | 1 |
| USB Type-C ports quantity | 2 |

### Power

| Feature | Value |
|---|---|
| Output voltage | 5 |
| Input current | 3 |
| Output current | 2 A |
| Port 1 output current | 2 A |
| Port 2 output current | 2 A |
| Port 1 output power | 18 W |
| Port 2 output power | 22.5 W |
| Port 3 output power | 18 W |

### Operational conditions

| Feature | Value |
|---|---|
| Storage temperature (T-T) | -5 - 30 |
| Operating temperature (T-T) | 0 - 45 |

### Certificates

| Feature | Value |
|---|---|
| Certification | BattG |
| Compliance certificates | CE, WEEE |

### Packaging data

| Feature | Value |
|---|---|
| Package type | Hanging box |

### Performance

| Feature | Value |
|---|---|
| Battery voltage | 3.7 V |
| Fast charging | Yes |
| Battery capacity | 74 Wh |
| Charging source | USB |
| USB Power Delivery (USB PD) | Yes |
| Fast charging technology | Quick Charge 3.0 |
| USB Power Delivery up to | 22.5 W |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.374 kg |
| Height | 27.5 mm |
| Width | 69 mm |
| Depth | 140 mm |
| USB Type-C cable length | 0.3 mm |

### Packaging content

| Feature | Value |
|---|---|
| Cables included | USB Type-C to USB Type-A |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Power Bank Goobay 53939 53939 cost, and is it available for purchase?

The price is 38.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1992 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 14.07.2026 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. 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 WENTRONIC 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 WENTRONIC 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: battery capacity, number of simultaneously connected devices (max), weight, product colour, charger compatibility, 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 Power Bank Goobay 53939 53939?

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/4455717/65648099_large.webp