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It really does not use a lot. Honestly it is more an electric "pad". Didn't feel like it is worth explaining in the blog :)

https://www.lidl.nl/p/sanitas-warmtekussen/p100366721?mktc=shopping&utm_source=google&utm_medium=cpc&utm_campaign=sho-sea_shop_cid-17929960797&utm_content&utm_term&gad_source=1&gclid=CjwKCAjw7-SvBhB6EiwAwYdCAajozqdwCjY9q3UeZFmdlMCfNEZKPbN6NZJKtNxqRfqVCNVhbMCyBxoClXEQAvD_BwE

I prefered it since it is small to store and now the winter is over, it won't bother me . I believes it uses around 60 watts.