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

FAQ

The following tips will help you extend the life of your batteries. When not using heated clothing for a long time, fully charge the batteries and disconnect them. During the off-season, remember to charge batteries every 3-months. This ensures they maintain an adequate charge and are ready to use in winter. Charging the battery between 20% and 80% is a good habit. Avoid constantly charging it to 100%, as it wears out batteries over time. Avoid letting the battery drain entirely, as it can be harmful in the long run. Occasionally, it's not very damaging, but frequent drainages can reduce the battery's lifespan. Note that batteries operate best at moderate temperatures, ideally between 20°C to 25°C (68°F to 77°F). Avoid extreme temperatures and keep your heated garments away from direct sunlight, hot cars, or very hot places.

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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