eHarv “e1” Charger

High quality “e1” charger is designed for people who cycle in the city and for Bicycle adventure enthusiasts. Therefore, it is specifically designed for bicycle trip environment where average speed is about 18-21 km/h. With mentioned moderate speed, it is possible to charge your devices almost as quickly as you charge at home. Characteristics of the product as follows:

  • Output Voltage: 5.10 V
  • Out current: up to 1.5 A
  • Storage element: Super Capacitor

“e1” Charger Dimensions: 110 x 30 mm.

Price: EUR 39.99 (For limited time)

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Product description

The charger should be connected to a dynamo on a bicycle to charge USB devices. “e1” and “e2” chargers are equipped with speed-adoptable technology which extracts enough power even in a moderate speed. Moreover, every product has a microcontroller which controls and adopts the power voltage which is generated from the dynamo, in order to charge your device safe and fast. The products are weather resistible, durable and waterproof.

eHarv “e2” Charger

“e2” product is dedicated to private customer segment where all people, who do nature trips and cycle long distance benefits a lot. The electronics is made for higher power output in a high speed of cycling and the product it self is portable. It is capable of outputting 5.5 W at 23 km/h and 10 W can be achieved at about 30 km/h. Characteristics of the product as follows:

  • Output Voltage: 5.10 V
  • Out current: up to 2 A
  • Battery Capacity: 4500 mAh

Currently “e2” charger is in Development Stage.


Our “e” line products give you an opportunity to charge your devices by using electricity produced from a dynamo while you are enjoying the cycle. You can charge your devices as fast as you do at Home, in the speed of 18-23 km/h. Simply, connect your device that can be charged via a USB port into “e” product and get the power instantly.


Q: What kind of devices I can charge?

A: Any devices, which can be charged by USB chargers (e.g. Phones, Camera, GPS, tablets, Lights, Power Bank).

Q: Are “e1” and “e2” chargers compatible with any dynamo?

A: Chargers work effectively with hub dynamo, but bottle dynamo requires other charger which we provide (“e2” charger). When ordering/buying chargers, please pay attention to the characteristics.

Q: How fast does it charge?

A: The charging period depends on the speed of cycling. When riding 18-23 km/h, charger outputs 1 Amp and charges at the same speed as a conventional power outlet (which you use at home).