Energy efficiency

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The new “Plus”-version of the Dynamo Harvester improves the efficiency significantly. The following diagram shows the harvested electrical power for a regular dynamo hub (Shimano DH-3N31) and a 28″ wheel. The Dynamo Harvester already harvests 7.5 watts at a speed of 20 km/h.

How much is really available at my phone? The conversion loss inside the Dynamo Harvester is less than 20% (depending on operation mode). This means that 6 watts can be used at 20 km/h. Your phone can use up to 5 watts directly, typically a phone with a large display consumes 3 to 4 watts. All electrical power not used by the phone goes directly to the internal battery of the Dynamo Harvester.

USB Charging Functionality

Sensors          

Mechanics