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PowerFlask™ 13,000mAh Portable Power Bank for Phones, Tablets & More


Charges 3 Devices at Once, Includes: UL Approved Wall Charger, USB to Micro USB Charging Cable, USB to Dual-Micro USB Charging Cable, Instruction Manual

Item #894263

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Your Price $39.99
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  • Shipping & Handling Included*

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The estimated delivery time will be approximately 3 - 5 business days from the time of order.

*Smartphones and tablets shown in the images are not included*
*To charge your iPhone 5/iPad 4 you will need to connect your 8-pin USB Lightning cable(not included) into the PowerFlask*

Superior Mobile Charging for iPad, iPhone, Samsung Galaxy, Google Nexus, and All Other USB-Charged Devices


  • Charge three devices at the same time
  • Powered by a 13000mAh rechargeable lithium-ion battery
  • Includes USB-to-Micro-USB charging cable, a USB-to-Dual-Micro-USB charging cable, and a USB power adaptor
  • Features two ultra-bright, built-in flashlight LEDs

Mobile Charging When You Need It Most
Got an iPad or Samsung Galaxy Tab 2? A Nexus 4, HTC, iPhone 5, or any other USB-charged device? If you do, then the PowerFlask is the portable, sleekly-designed – dare we say intoxicating – charging solution that you should never be without.

Featuring a powerful 13000 mAh lithium battery, the PowerFlask lets you charge three devices at the same time. Charge two tablets and a phone, two phones and a tablet, three phones—whatever you have that needs a charge, the PowerFlask assures you that you won’t run out of juice when you need it most.

100 Proof Portable Power
Whether you’ve got a family or just a lot of high-tech gadgets, the PowerFlask’s dual charging ports ensure that you won’t have to wait to charge anything (and can avoid those ‘me first’ squabbles that crop up when everybody’s got a bushed battery at the same time). Plug your tablet – or tablets if you’re using the included USB-to-Micro-USB cable – into the powerful 2.5 amp tablet port and your phone(s), MP3 player, handheld gaming device – whatever – into the phone-phriendly 1 amp port, and let those gizmos guzzle.

Electrifying Design
With a body wrapped in textured black bicast leather accented with subtle red stitching and a top and bottom that gleams with a silver chrome finish, the PowerFlask’s signature sexy curve makes it comfy to clasp, and a pleasure to put in your pocket, purse, pouch, bag or backpack.

We’ve also given the PowerFlask easy-to-understand, cool-blue LED status indicator lights so you’ll always know how much charging power remains and when you need to recharge it.

Here’s a Stiff Shot of Technology
What exactly does 13000mAh mean? Let us explain: The capacity of the PowerFlask is 13000mAh; with a voltage of 3.7-4.0V, converted to digital products, the standard charging voltage should approximate 5V. As there will be some expended energy during said conversion, the general conversion rate will be in an approximate range of 80% - 96%. This allows you to calculate the numbers of times you can charge your device from a fully recharged PowerFlask.

To calculate estimated number of charges, you can use the formula X = (Y x Z)/A where X is the number of times a device can be charged from a fully recharged PowerFlask, Y is the PowerFlask’s capacity, Z is the conversion rate, and A is the battery capacity of the device in question.

Here’s an easier way to explain it (yeah, why didn’t we just do that in the first place, right?):

To figure out the number of times you can charge any device from a fully loaded PowerFlask, just multiply 13000 (the PowerFlask’s mAh) by 0.85 (the approximate conversion during charging) and divide by the battery capacity of your device.

11050/Device Battery Capacity = Number of Charges from a Fully Charged PowerFlask

Keep in mind that the final number is an approximation – some devices will charge somewhat less than this due to the conversion of the charging voltage.

Below are a few examples of battery capacities for popular Apple devices (no offense non-Apple users – we love Android devices just as much!):

Device: Battery Capacity(mAh)
  • iPhone4/4s: 1420
  • iPhone5: 1434
  • iPad1/iPad2: 6000
  • iPad3: 11666
  • iPad4: 14000
  • iPad Mini: 4490

This Flask Holds Plenty of Juice
What all that tech-talk means is that PowerFlask delivers an incredible amount of mobile charging power. Take a look at the other portable chargers and you’ll find one after another that offers a watered-down 2200mAh, maybe a few at 3400mAh, or even 5600mAh – the PowerFlask blows them all away with a dependable 13000mAh. Again, that’s 13000mAh. Trust us…you need this much power.

And because we never finish a design with ‘good enough,’ we’ve made sure to include two ultra-bright LED flashlights, just in case of any emergency lighting situations that come up when you’re on the go.

Get Off the Wagon and Get Plugged In
Everywhere you go throughout the day (and night), the PowerFlask goes with you, making sure that all of those USB devices you can’t live without (and let’s be honest, there are a lot of USB devices we can’t live without), always have a handy shot of superior charging power.

  • Collection Name: Powerflask
  • Color: Black
  • Material: Leather
  • Number of USB: 1
  • Portable/Stationary: Portable

Standard shipping via UPS Ground is included in the quoted price. The estimated delivery time will be approximately 3 - 5 business days from the time of order.

Express shipping is via UPS. The estimated delivery time will be approximately 1 - 2 business days from the time of order.

Please choose your shipping method at checkout.

An additional Shipping and Handling fee will apply to express shipments. This fee will be quoted at checkout.

*Delivery is available to Alaska, Hawaii and Puerto Rico. An additional Shipping and Handling fee will apply to shipments going to Alaska, Hawaii or Puerto Rico. This fee will be quoted at checkout. Additional transit time may be required. products can be returned to any of our more than 600 Costco warehouses worldwide.

How to Return: For an immediate refund (including shipping and handling), simply return your purchase at any one of our Costco warehouses worldwide. If you are unable to return your order at one of our warehouses, please email customer service or call our customer service center at 1-800-955-2292 for assistance. To expedite the processing of your return, please reference your order number.

If you request an item be picked up for return, the item must be packaged and available for pick up in the same manner as it was delivered. If your order was delivered "curb side", it will need to be available for curb side pick up.
If the item arrived to you in a box, it will need to be in a box at the time of pick up.

View Costco's Return Policy.

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