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Flat-out powerful.

Power through the coldest weather without feeling bulky under your coat

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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.

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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.

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up to3xmore power
up to4xthinner
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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
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Twice the power

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

Buy dual battery kit

Order your new ewool 70W flat battery today

Buy now

Designed in Canada

Canadians know about thriving in the cold. ewool® products are designed and tested in Canada. It’s no coincidence we make the most powerful heated wearables in the world.