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header-product Goobay 53939 Power Bank Lithium Polymer 20000 mAh
38.49 €

Goobay 53939 Power Bank Lithium Polymer 20000 mAh

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Power Bank Goobay 53939 53939 Photo 1
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Short 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.
Available for order: 17 pcs.
Warranty: 2 Years
SKU: 4455717
Manufacturer: WENTRONIC
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.99 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
09.11.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
12.11.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.37 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / DPD Paku skapis / Omniva LV / Latvijas Pasts pakomāts / Latvijas Pasts nodaļa
12.11.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.99 €
payment
Payment Methods:
Bank transfer
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Product information

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

Battery capacity: A measure of the charge stored by the battery. Determined by the mass of active material contained in the battery.
20000 mAh
Battery technology: The type of battery in the device, e.g. nickel–cadmium (NiCd).
Lithium Polymer (LiPo)
Input interface: The ports (sockets) where the device connects with other devices.
Micro-USB + USB Type-C
Fast charging:
Yes
Number of simultaneously connected devices (max):
3
Charging source: How the battery is charged.
USB
Charger compatibility: What devices can be used with charger.
Tablet, Mobile phone/Smartphone, Headphones/Headset
Product colour: The colour e.g. red, blue, green, black, white.
Black
All features

Battery

Battery capacity: A measure of the charge stored by the battery. Determined by the mass of active material contained in the battery.
20000 mAh
Battery technology: The type of battery in the device, e.g. nickel–cadmium (NiCd).
Lithium Polymer (LiPo)

Packaging data

Package type: The type of product package e.g. box.
Hanging box

Packaging content

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

Weight & dimensions

USB Type-C cable length:
0.3 mm
Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.374 kg
Height: The measurement of the product from head to foot or from base to top.
27.5 mm
Depth: The distance from the front to the back of something.
140 mm
Width: The measurement or extent of something from side to side.
69 mm

Certificates

Certification:
BattG
Compliance certificates: Indicates which regulatory, safety, and environmental standards the product complies with, as verified by recognized authorities or certification bodies.
CE, WEEE

Sustainability

Sustainability compliance:
Yes

Operational conditions

Storage temperature (T-T): The minimum and maximum temperatures at which the product can be safely stored.
-5 - 30
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
0 - 45

Power

Port 1 output current:
2 A
Port 2 output current:
2 A
Output voltage:
5
Output current:
2 A
Port 3 output power:
18 W
Port 2 output power:
22.5 W
Port 1 output power:
18 W
Input current:
3

Ports & interfaces

Micro-USB connectors quantity:
1
Micro-USB connector: The device features a socket to connect a Micro-USB lead or device.
Yes
USB Type-C ports quantity:
2
USB Type-A output ports:
1
Input interface: The ports (sockets) where the device connects with other devices.
Micro-USB + USB Type-C

Performance

USB Power Delivery up to:
22.5 W
USB Power Delivery (USB PD):
Yes
Fast charging technology:
Quick Charge 3.0
Fast charging:
Yes
Battery capacity: A measure of the charge stored by the battery. Determined by the mass of active material contained in the battery.
74 Wh
Battery voltage: The voltage (V) of the battery.
3.7 V
Charging source: How the battery is charged.
USB

Design

International Protection (IP) code: The IP code classifies and rates the degree of protection provided against the intrusion (including body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. It is published by the International Electrotechnical Commission (IEC). The digits (characteristic numerals) indicate conformity with the conditions summarized in the tables below. Where there is no protection rating with regard to one of the criteria, the digit is replaced with the letter X. an electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. Another example is the Sony Xperia Z Ultra, one of the first cellular phones to be IP-rated; it is rated at IP58 and marketed as "dust resistant" and can be "immersed in 1.5 meter of freshwater for up to 30 minutes".
IP20
LED indicators:
Status
Shape: The external form, contours, or outline of the product.
Rectangle
On/off switch: The button which is pressed to switch the device on or off.
Yes
Charger compatibility: What devices can be used with charger.
Tablet, Mobile phone/Smartphone, Headphones/Headset
Housing material: What the casing of the product is made of.
Aluminium
Product colour: The colour e.g. red, blue, green, black, white.
Black
Number of simultaneously connected devices (max):
3

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Customer reviews

Customer questions

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 — 17 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 09.11.2026 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: battery capacity, battery technology, input interface, fast charging, number of simultaneously connected devices (max), charging source, 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.

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.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.