Battery 7a Set (2pcs)The air travel friendly Foil Assist batteries come in a convenient format and feature an average battery runtime of 30 to 60 minutes. Our lithium high voltage batteries (LiHV) have been specifically designed for the Duotone Foil Assist system. Please note that you need to connect two batteries to activate the Foil Assist. To make your foiling experience with the Foil Assist truly limitless, our batteries comply with air travel regulations and have a
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