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Swissten Voltbox Power Bank 20000mAh 35W with USB-A Port and USB-C Port Power Delivery / Quick Charge Black
Power Banks

Swissten Voltbox Power Bank 20000mAh 35W with USB-A Port and USB-C Port Power Delivery / Quick Charge Black

The Swissten Voltbox power bank has a capacity of 20,000 mAh and charging power of up to 35 W via USB-C and the built-in USB-C cable. The built-in USB-C and Lightning cables let you charge devices...

The Swissten Voltbox power bank has a capacity of 20,000 mAh and charging power of up to 35 W via USB-C and the built-in USB-C cable. The built-in USB-C and Lightning cables let you charge devices without separate cables, while the USB-A port provides an additional connection option. The LED display shows the battery charge level.

Its casing is made of...

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Top specs

  • Capacity

    The capacity indicates how much energy the power bank can store. The greater the capacity of the power bank, the more times it can charge your phone. It is measured in milliampere-hours (mAh).

    20000

    "The most popular powerbank capacity for long autonomy." 2. "
    " 3. "On average, a mobile phone battery has a capacity of 3500-4000mAh, so a 20000mAh powerbank can give us approximately 4 charges."

  • Fly-Safe

    You can take it with you on the plane. It must be carried only in your hand luggage, never in checked baggage. Up to 2 power banks per passenger are allowed. Always check the airline’s rules regarding in-flight use.
  • See all
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Product report

Description

Description

The Swissten Voltbox power bank has a capacity of 20,000 mAh and charging power of up to 35 W via USB-C and the built-in USB-C cable. The built-in USB-C and Lightning cables let you charge devices without separate cables, while the USB-A port provides an additional connection option. The LED display shows the battery charge level.

Its casing is made of flame-retardant ABS plastic and polycarbonate. When charging multiple devices simultaneously, the output power is shared at 15 W.

  • Capacity: 20,000 mAh
  • Charging power: Up to 35 W
  • Output ports: 1 USB-A and 1 USB-C
  • USB-A output power: Up to 22.5 W
  • Built-in cables: USB-C and Lightning
  • USB-C cable output power: Up to 35 W
  • Lightning cable output power: Up to 27 W
  • USB-C input: Up to 30 W
  • USB-C cable input: Up to 30 W
  • Display: LED
  • Material: Flame-retardant ABS plastic and polycarbonate
  • Colour: Black
  • Weight: 297 g
  • Dimensions: 12 × 7.2 × 2.6 cm
  • Battery type: Li-Polymer
  • Charging support: Power Delivery and Quick Charge
  • Fly-Safe: Yes

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Dimensions

Capacity
20000 mAh

Capacity: 20000

The capacity indicates how much energy the power bank can store. The greater the capacity of the power bank, the more times it can charge your phone. It is measured in milliampere-hours (mAh).


"The most popular powerbank capacity for long autonomy." 2. "
" 3. "On average, a mobile phone battery has a capacity of 3500-4000mAh, so a 20000mAh powerbank can give us approximately 4 charges."
Charging Wattage
35 W
Colour
Black
Weight
297 gr

Weight: 297

The weight of the power bank depends mainly on its capacity, but also on the material and functionality it offers (such as additional charging ports, wireless charging, flashlight, etc). For example, 10000mAh power banks start at around 200g, while 20000mAh ones start at around 300g.


Medium-weight powerbank. It may be too heavy for you to carry with you every day, but usually offers greater capacity compared to lighter ones.

Ports

USB-A Output Ports
1
USB-C Output Ports
1
Main Port Amperage
3 A

Main Port Amperage: 3

The current intensity indicates the charging speed that the power bank can offer. Higher intensity allows for faster charging in devices that support it.

This value refers to the maximum current intensity that the power bank can offer to the connected device, but it remains compatible with all devices that charge with lower intensities.


The power bank can provide sufficient intensity for fast charging. To charge a device with fast charging, it must also support it, otherwise it will charge normally with regular charging.
Built-in Cable
With integrated USB-C cable, With integrated Lightning cable

Charging Technology

Power Delivery
Yes

Power Delivery

International fast charging standard via USB-C port. Essential for fast charging iPhone, iPad, newer Android devices, as well as Laptops / MacBooks (when the power is 45W or higher)
Quick Charge
Yes

Quick Charge

Qualcomm fast charging technology, widely used in Android devices (Xiaomi, Motorola, Realme, etc.), mainly through traditional USB-A ports.

Features

Fast Charging
Yes

Fast Charging

Support for fast charging to significantly reduce waiting time.
Fly-Safe
Yes

Fly-Safe

You can take it with you on the plane. It must be carried only in your hand luggage, never in checked baggage. Up to 2 power banks per passenger are allowed. Always check the airline’s rules regarding in-flight use.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Reviews (8)

Reviews

4.3
8
4.3
Review this product
  1. 6
  2. 1
  3. 3 stars
    0
  4. 1
  5. 1 star
    0
Review this product

Reviews photos

Reviews photos
Reviews photos
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Reviews photos

Reviews by our members

From Cyprus

  • Demis_Damotsidis
    2
    Demis_Damotsidis

    Verified purchase

    First it charges the phone, then if I’m not careful the power bank pulls all the battery back out of the phone. I’m not satisfied

    Translated from Greek ·
    Did you find this review helpful?

    • From other countries

  • Nicolasvardos
    5
    Nicolasvardos

    Verified purchase

    This review is about the capacity: 30000 mAh

    The screen is of good quality and overall the whole power bank is a fairly high-quality and sturdy build. For me, the built-in cable is a game changer

    Translated from Greek ·
    Did you find this review helpful?
  • Pavlos_Sofroniadis
    5
    1 out of 1 members found this review helpful
    Pavlos_Sofroniadis
    This review is about the capacity: 10000 mAh

    I got it after reading the good reviews. Very convenient compact size (I put it next to AirPods Pro for comparison) and 2 built-in cables, both type C and lightning. You can also charge the power bank via type-C. Very good purchase

    Translated from Greek ·
    Did you find this review helpful?
  • @mike_diamantopoulos
    5
    @mike_diamantopoulos

    Verified purchase

    Very good, I got it for travel
    It has a cable for both iPhone and Android
    It charges phones very quickly
    At its price and weight, I don't think there's another like it, I believe the most important thing is the weight

    Translated from Greek ·
    Did you find this review helpful?
  • Elenenio87
    5
    Elenenio87

    Verified purchase

    This review is about the capacity: 10000 mAh

  • 5
    Antriana_Koun
    This review is about the capacity: 10000 mAh

    everything went very well

    Translated from Greek ·
    Did you find this review helpful?
  • 4
    Dimitris_Sinakos

    Verified purchase

    This review is about the capacity: 30000 mAh

  • 5
    Assodyos

    Verified purchase

  • Demis_Damotsidis
    2
    Demis_Damotsidis

    First it charges the phone, then if I’m not careful the power bank pulls all the battery back out of the phone. I’m not satisfied

    Translated from Greek ·
    0
  • Nicolasvardos
    5
    Nicolasvardos

    The screen is of good quality and overall the whole power bank is a fairly high-quality and sturdy build. For me, the built-in cable is a game changer

    Translated from Greek ·
    0
  • Pavlos_Sofroniadis
    5
    Pavlos_Sofroniadis

    I got it after reading the good reviews. Very convenient compact size (I put it next to AirPods Pro for comparison) and 2 built-in cables, both type C and lightning. You can also charge the power bank via type-C. Very good purchase

    Translated from Greek ·
    1
  • @mike_diamantopoulos
    5
    @mike_diamantopoulos

    Very good, I got it for travel
    It has a cable for both iPhone and Android
    It charges phones very quickly
    At its price and weight, I don't think there's another like it, I believe the most important thing is the weight

    Translated from Greek ·
    0
  • Elenenio87
    5
    Elenenio87

    0
  • See all
Questions

Questions

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Description & Specifications

The Swissten Voltbox power bank has a capacity of 20,000 mAh and charging power of up to 35 W via USB-C and the built-in USB-C cable. The built-in USB-C and Lightning cables let you charge devices without separate cables, while the USB-A port provides an additional connection option. The LED display shows the battery charge level.

Its casing is made of flame-retardant ABS plastic and polycarbonate. When charging multiple devices simultaneously, the output power is shared at 15 W.

  • Capacity: 20,000 mAh
  • Charging power: Up to 35 W
  • Output ports: 1 USB-A and 1 USB-C
  • USB-A output power: Up to 22.5 W
  • Built-in cables: USB-C and Lightning
  • USB-C cable output power: Up to 35 W
  • Lightning cable output power: Up to 27 W
  • USB-C input: Up to 30 W
  • USB-C cable input: Up to 30 W
  • Display: LED
  • Material: Flame-retardant ABS plastic and polycarbonate
  • Colour: Black
  • Weight: 297 g
  • Dimensions: 12 × 7.2 × 2.6 cm
  • Battery type: Li-Polymer
  • Charging support: Power Delivery and Quick Charge
  • Fly-Safe: Yes

Manufacturer

Manufacturer Details

Warnings & Safety Information

Dimensions

Capacity
20000 mAh

Capacity: 20000

The capacity indicates how much energy the power bank can store. The greater the capacity of the power bank, the more times it can charge your phone. It is measured in milliampere-hours (mAh).


"The most popular powerbank capacity for long autonomy." 2. "
" 3. "On average, a mobile phone battery has a capacity of 3500-4000mAh, so a 20000mAh powerbank can give us approximately 4 charges."
Charging Wattage
35 W
Colour
Black
Weight
297 gr

Weight: 297

The weight of the power bank depends mainly on its capacity, but also on the material and functionality it offers (such as additional charging ports, wireless charging, flashlight, etc). For example, 10000mAh power banks start at around 200g, while 20000mAh ones start at around 300g.


Medium-weight powerbank. It may be too heavy for you to carry with you every day, but usually offers greater capacity compared to lighter ones.

Ports

USB-A Output Ports
1
USB-C Output Ports
1
Main Port Amperage
3 A

Main Port Amperage: 3

The current intensity indicates the charging speed that the power bank can offer. Higher intensity allows for faster charging in devices that support it.

This value refers to the maximum current intensity that the power bank can offer to the connected device, but it remains compatible with all devices that charge with lower intensities.


The power bank can provide sufficient intensity for fast charging. To charge a device with fast charging, it must also support it, otherwise it will charge normally with regular charging.
Built-in Cable
With integrated USB-C cable, With integrated Lightning cable

Charging Technology

Power Delivery
Yes

Power Delivery

International fast charging standard via USB-C port. Essential for fast charging iPhone, iPad, newer Android devices, as well as Laptops / MacBooks (when the power is 45W or higher)
Quick Charge
Yes

Quick Charge

Qualcomm fast charging technology, widely used in Android devices (Xiaomi, Motorola, Realme, etc.), mainly through traditional USB-A ports.

Features

Fast Charging
Yes

Fast Charging

Support for fast charging to significantly reduce waiting time.
Fly-Safe
Yes

Fly-Safe

You can take it with you on the plane. It must be carried only in your hand luggage, never in checked baggage. Up to 2 power banks per passenger are allowed. Always check the airline’s rules regarding in-flight use.

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews (8)

4.3
8
4.3
Review this product
  1. 6
  2. 1
  3. 3 stars
    0
  4. 1
  5. 1 star
    0
Review this product

Reviews photos

Reviews photos
Reviews photos
Reviews photos
Reviews photos

Reviews by our members

From Cyprus

  • Demis_Damotsidis
    2
    Demis_Damotsidis

    Verified purchase

    First it charges the phone, then if I’m not careful the power bank pulls all the battery back out of the phone. I’m not satisfied

    Translated from Greek ·
    Did you find this review helpful?

    • From other countries

  • Nicolasvardos
    5
    Nicolasvardos

    Verified purchase

    This review is about the capacity: 30000 mAh

    The screen is of good quality and overall the whole power bank is a fairly high-quality and sturdy build. For me, the built-in cable is a game changer

    Translated from Greek ·
    Did you find this review helpful?
  • Pavlos_Sofroniadis
    5
    1 out of 1 members found this review helpful
    Pavlos_Sofroniadis
    This review is about the capacity: 10000 mAh

    I got it after reading the good reviews. Very convenient compact size (I put it next to AirPods Pro for comparison) and 2 built-in cables, both type C and lightning. You can also charge the power bank via type-C. Very good purchase

    Translated from Greek ·
    Did you find this review helpful?
  • @mike_diamantopoulos
    5
    @mike_diamantopoulos

    Verified purchase

    Very good, I got it for travel
    It has a cable for both iPhone and Android
    It charges phones very quickly
    At its price and weight, I don't think there's another like it, I believe the most important thing is the weight

    Translated from Greek ·
    Did you find this review helpful?
  • Elenenio87
    5
    Elenenio87

    Verified purchase

    This review is about the capacity: 10000 mAh

  • 5
    Antriana_Koun
    This review is about the capacity: 10000 mAh

    everything went very well

    Translated from Greek ·
    Did you find this review helpful?
  • 4
    Dimitris_Sinakos

    Verified purchase

    This review is about the capacity: 30000 mAh

  • 5
    Assodyos

    Verified purchase

  • Demis_Damotsidis
    2
    Demis_Damotsidis

    First it charges the phone, then if I’m not careful the power bank pulls all the battery back out of the phone. I’m not satisfied

    Translated from Greek ·
    0
  • Nicolasvardos
    5
    Nicolasvardos

    The screen is of good quality and overall the whole power bank is a fairly high-quality and sturdy build. For me, the built-in cable is a game changer

    Translated from Greek ·
    0
  • Pavlos_Sofroniadis
    5
    Pavlos_Sofroniadis

    I got it after reading the good reviews. Very convenient compact size (I put it next to AirPods Pro for comparison) and 2 built-in cables, both type C and lightning. You can also charge the power bank via type-C. Very good purchase

    Translated from Greek ·
    1
  • @mike_diamantopoulos
    5
    @mike_diamantopoulos

    Very good, I got it for travel
    It has a cable for both iPhone and Android
    It charges phones very quickly
    At its price and weight, I don't think there's another like it, I believe the most important thing is the weight

    Translated from Greek ·
    0
  • Elenenio87
    5
    Elenenio87

    0
  • See all