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70W Flat Rechargable Battery


  • 70W Flat Rechargable Battery
  • 70W Flat Rechargable Battery
  • 70W Flat Rechargable Battery
  • 70W Flat Rechargable Battery

Power through the coldest weather without feeling bulky under your coat. Worn with your ewool PRO heated vest, our new 70W flat battery is the perfect balance between size and power.

Designed in Canada

Free Shipping

Easy Exchange

Free Returns

One-Year Warranty

Free Shipping

You are most likely living far away from one of our stores. We do not want this to stop you from owning an ewool heated vest. That is why we offer free shipping on all orders purchased in Canada, USA and Europe.

Easy Exchange

We know evaluating the perfect size is difficult until you actually try it on yourself. Once you receive your order, if the size does not fit you, we will exchange it right away within 30 days of your purchase.

Free Returns

We want your purchase to be right. If the size does not fit you, or if you simply want to return the product, we give you a 14-day return window. Beyond that window we extend the return period to 30 days for a flat fee for shipping and handling.

One-Year Warranty

Our product is carefully designed to deliver incredible performance. We are committed to deliver the best quality. We offer one-year warranty.


Flat-out powerful.

Power through the coldest weather without feeling bulky under your coat


Wear with peace of mind.

The 70W flat battery is designed to seamlessly fit in the back pocket of your ewool PRO heated vest. Meeting the rigorous UL1642 certification, you can safely wear it. It’s also TSA approved for air travel.


Flat and Powerful

This 70 W battery will keep you going steadily for hours in the most extreme cold. That’s three times more powerful than most 22 W competitor batteries.

With its stunning design, the flat portable battery is 12 mm thick (just slightly over ¼ inch) and up to 4 times thinner than other batteries on the market.

up to3xmore power
up to4xthinner

Fast charging

The new ewool battery is not only exceptionally flat and powerful but also charges faster. In just 2½ hours the battery is fully charged with the ewool 32W charger. Sold separately.

Buy 32W charger

Twice the power

Double the battery life of your ewool PRO heated vest with our dual battery kit.

Buy dual battery kit
To ensure optimal performance and longevity of your battery, we recommend to avoid leaving the battery connected to the charger for extended periods. Ideally, recharge the battery after each use, such as at the day's end, and avoid letting it fully discharge before recharging. Never restart the jacket when the battery is empty to avoid complete drainage. When storing, disconnect the battery from the garment and fully recharge it beforehand. Additionally, every three to four months, recharge it again to maintain its capacity effectively. These practices will help preserve the battery's lifespan and ensure consistent performance.
All ewool batteries are TSA-friendly. Please remember that, like laptops and camera batteries, all ewool batteries are lithium-ion and must be carried in your carry-on luggage.
You can use the 18W USB-C Flat Battery to charge your phone.
Ewool batteries are specially designed to be compatible with other ewool products. If you own heating clothing from another brand, check with their seller to see if other batteries can be used with their clothing.
No. Not all ewool batteries work with all styles. However, the 22W battery works with our heated accessories including our Heated Glove Liners and Heated Sock Covers.
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Designed in Canada

Tested in the Arctic, ewool provides best-in-class heating in the coldest conditions. Dependable and easy to use, our innovative heated clothing technology is made to keep you perfectly warm and well equipped to perform in the great outdoors.