Alpenwarm Power Bank 20,000 mAh with carbon texture, seen from above

Backup for several days. The 20,000 mAh holds four times as much as the power bank in the box with the vest and touchscreen gloves. Its place is your backpack.

  • 20,000 mAh (74 Wh), four times the power bank in the box
  • Steady 5V / 2A on two USB-A outputs
  • Calculated, around 32 hours with the vest on level one
  • Tops up your phone when the heating is off
  • One heated piece per power bank – the outputs share their power

Run times are calculated from measurements with the 5,000 mAh at 23 °F (−5 °C), spread over several days.

Performance

  • Capacity 20,000 mAh (74 Wh at 3.7V)
  • Output: 5V / 2A
  • Input: 5V / 2.1A via USB-C or Micro-USB
  • Ports: 2 × USB-A, 1 × USB-C, 1 × Micro-USB

Safety

  • CE compliant to EN IEC 62368-1
  • For heated apparel at 5V and 2A
  • Not for heated socks with 3.7V batteries
  • Keep dry

Size and what's in the box

  • 5.4 × 2.7 × 1.1 in (138 × 68 × 28 mm), about 14 oz (400 g)
  • What's included: power bank, USB-C charging cable, quick guide

Charge the power bank fully before the trip – at 20,000 mAh, ideally overnight. On the way it sits in your backpack or lid pocket, with the cable running to your vest or gloves. One heated piece per power bank.

  • Several days without a socket.
  • Tops up your phone in between.
  • No proprietary battery – USB at 5V.

At 74 Wh it is usually allowed in cabin baggage. Power banks do not belong in checked luggage.

108 reviews

Power Bank 20,000 mAh Reserve for several days

Four times the reserve of the power bank in the box – for trips where the next socket is far away.

  • 20,000 mAh – four times the power bank in the box
  • Steady 5V / 2A for the vest and touchscreen gloves
  • Two USB-A, charges via USB-C or Micro-USB
  • About 14 oz (400 g) – made for the backpack

What's included: Power bank · USB-C charging cable · quick guide

$84.90$124.90Save $40.00 (32%)

Tax includedFree shipping

Capacity20,000 mAh
5,000 mAhSecond battery$59.90 10,000 mAhFull day$64.90 20,000 mAhSeveral days$84.90

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This product is in high demand this winter and our stock is running low. Once it sells out, it takes a long time before we can produce it again – so it's best to secure yours now.

At a glance

What is inside the 20,000 mAh

  • 20,000mAh

    Capacity

    Four times the power bank in the box

  • 74Wh

    Energy

    Enough for several days outside

  • 5V · 2 A

    Output

    The current your vest and gloves are built for

  • 14oz

    Weight

    5.4 × 2.7 × 1.1 in, for backpack and lid pocket

Size comparison of the Alpenwarm power banks with 5,000, 10,000 and 20,000 mAh

Which size

The reserve for several days

The 5,000 mAh comes in the box with the vest and touchscreen gloves, the 10,000 mAh lasts a long day. The 20,000 mAh is the largest of the three: it belongs in your backpack rather than your inner pocket – and keeps warmth in reserve there for several days.

  • Calculated, four times the warmthAs much as four full power banks from the box, in one housing.
  • Several days without a socketFor hut-to-hut tours, weekends outdoors and long working days outside.
  • Charges via USB-C or Micro-USBWith whichever cable is at hand. A USB-C cable is included.

Run time

What one full charge gives you

Calculated from measurements with the power bank in the box. This much warmth is stored in one full 20,000 mAh:

  1. Vest · level 1Spread over a long weekend
    ≈ 32h
  2. Vest · level 2When the wind picks up
    ≈ 16h
  3. Touchscreen gloves
    ≈ 20–24h

Calculated from measurements with the 5,000 mAh at 23 °F (−5 °C), spread over several days.

Alpenwarm Power Bank 20,000 mAh with carbon texture, seen from above

Details

Built for several days outside

Ports of the 20,000 mAh power bank: two USB-A, USB-C and Micro-USB, on frosted larch wood

Four ports

Two USB-A for the heating cable and your phone, USB-C and Micro-USB for charging.

2 A

Steady 5V

The value your vest and gloves are designed for.

74 Wh

Four times the capacity

Four power banks from the box in one.

Charges your phone too

Via USB-A, when the heating is off.

14 oz

Made for the backpack

5.4 × 2.7 × 1.1 in. Its place is your backpack or lid pocket.

CE compliant

To EN IEC 62368-1. For heated apparel at 5V and 2A.

One heated piece per power bank

The outputs share their power. For the vest and gloves together, take two.

Hiker outside a mountain hut, the 20,000 mAh power bank in his backpack lid, the cable running to his heated vest

On the way

For trips where the next socket is far away

Two days from hut to hut, a weekend by the water, a week of work outdoors. The 20,000 mAh waits in your backpack, the cable runs to your vest, and the reserve lasts well past the first evening.

  • Hut-to-hut tours
  • Lake weekends
  • Ski touring
  • Camping
  • Outdoor work
  • Travel
In the box: 20,000 mAh power bank, USB-C charging cable and quick guide

What's included

Everything in the box

  • 1× Power bank, 20,000 mAhTwo USB-A, USB-C, Micro-USB
  • 1× USB-C charging cableFor charging the power bank
  • 1× Quick guide

Works with the vest and touchscreen gloves. Both run on USB at 5V and 2A.

Frequently asked questions

  • Yes. Both run on USB at 5V and 2A – exactly what this power bank is built for. It holds four times as much as the power bank that comes in the box with both.

  • Calculated, about four times as long as with the power bank in the box: around 32 hours with the vest on level one, 16 on level two, and 20 to 24 hours with the touchscreen gloves. The figures are extrapolated from measurements with the 5,000 mAh at 23 °F (−5 °C).

  • Better not. The two USB-A outputs share their power, so neither piece would get enough. For the vest and gloves together, take two power banks.

  • Via USB-C or Micro-USB at 5V and 2.1A; the USB-C cable is included. At 20,000 mAh a full charge takes correspondingly longer than with the small power bank – ideally overnight.

  • At 5.4 × 2.7 × 1.1 in and about 14 oz, it is made for the backpack. For the inner pocket, the 5,000 mAh that comes in the box with the vest and touchscreen gloves is the better fit.

  • In cabin baggage, usually yes: at 74 Wh it is below the common 100 Wh limit. Power banks do not belong in checked luggage. Your airline's rules apply.

  • 5 stars: 101 (94%)
  • 4 stars: 7 (6%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
M
Maja

I am very pleased with the battery performance.

M
Morgan

It works great with my heated vest and jacket.

P
Priya

The battery has performed consistently and reliably.

E
Ece

I love having a reliable power source for my heated jacket on cold days.

T
Tomáš

It has plenty of capacity for my heated jacket.

E
Eli

Very useful for people who spend a lot of time outside.

F
Freja

The power output has been reliable for my heated gear.

A
Arthur

I like having a dependable backup when I'm traveling.

N
Nora

The 20000mAh capacity is a major plus.

G
Giorgi

This power bank has made my heated apparel much more practical.

J
Josip

Perfect for commuting with heated clothing.

M
Milica

I have been very happy with the battery life.

E
Elena

The power bank has been working flawlessly for my needs.

A
Amelia

I am impressed by how much power this compact unit holds.

M
Manon

I have been impressed by the consistency of the power delivery.

D
David

I have used it with my heated jacket and it performs very well.

Z
Zeynep

I like that I can take extra power with me when I'm outdoors.

N
Navya

The power bank charges up nicely and holds plenty of energy.

M
Morag

The 20000mAh capacity is exactly what I needed for longer outings.

L
Luuk

The battery life is one of my favorite features.

N
Niamh

It gives my heated clothing plenty of extra runtime.

K
Kunle

The power bank feels practical and reliable.

A
Ananya

It keeps my heated vest powered without any hassle.

L
Lerato

It gives me confidence that my heated gear will have power when I need it.

G
Gethin

I appreciate the extra runtime this power bank provides.

D
Dele

I like knowing I have enough power for my heated apparel.

N
Na

I appreciate the generous capacity.

S
Seung-min

The power bank has been dependable and long lasting.

H
Henry

I like how much runtime I get from a single charge.

N
Nemanja

It works well during outdoor activities in cold weather.

M
Moritz

Very convenient for winter activities.

S
Shona

Great runtime for a portable power bank.

K
Keerthana

I like having a dedicated power source for my heated gear.

A
Antoni

It is easy to carry and works reliably.

K
Klea

The battery lasts through long periods outside.

Alpenwarm Power Bank 20,000 mAh with carbon texture, seen from above

For several days

The big reserve for your backpack

  • 20,000 mAh, four times the one in the box
  • Works with the vest and touchscreen gloves
  • Free shipping

$84.90

Order yours

Customer Reviews

Overall rating: 4.9 / 5 from 108 reviews.