With a Y-cable

DualBattery is the name of the innovation from Bosch - and it's actually just a Y-cable that connects two batteries together. Depending on the battery type, the dual power pack delivers up to 1,000 watt hours for long distances, steep routes and heavy loads. The concept is predestined for intensive use. The e-bike manufacturer attaches the batteries either both to the frame or to the frame and luggage rack.

Difficult to implement on an e-mountainbike

The concept is difficult for manufacturers of e-mountainbikes to implement: There may still be room for a bottle cage and two batteries on a hardtail, but with current designs it is almost inconceivable to accommodate this energy density on an e-fully. Claus Fleischer, Head of Bosch E-Bike Systems, names these areas of application for DualBattery: "For eCargo bikes, which replace vans in cities. On pedelecs and S-pedelecs for commuters who cover long distances or on trekking bikes for long-distance eBike travelers."

Currently only in original equipment

DualBattery is installed directly on the bike by the e-bike manufacturer. Retrofitting the Y-cable is therefore not currently planned. Both batteries can be charged via a charging connection. They are connected via this Y-cable, which links either two frame batteries or one frame battery and one rack battery. The system switches automatically and intelligently between the two batteries, both when charging and discharging. In addition to the range, the service life of the batteries is extended as the power is distributed between the two. This is an advantage over the previous method of simply carrying a second battery in a rucksack or bike bag.

What are the requirements?

DualBattery works in conjunction with the Nyon on-board computer or the Intuvia display and, as mentioned, is only available as original equipment on the e-bike.

The PowerPacks 300, 400 and 500 can be combined with each other in different constellations.

www.bosch-ebike.de