The fact that this product is listed under "water sports/boats/air pump" creates completely false expectations! Pumping up a boat is never possible. You need a device with a high volume and low pressure (max. 1 bar). This is a compressor = small volume, high pressure. Fits to pump up a racing bike tyre to 5 bar. To pump up a rubber dinghy or similar, it would need an estimated 50 battery charges, and probably overheat first. @Galaxus: Please place correctly!