Bosch PowerTube 400 Battery - Horizontal Mount 400wH eBike System 2. Bosch PowerTube batteries are integrated into the bike frame protecting them from the elements and concealing them from view. They are available for with the plug positioned for vertical or horizontal installation within the downtube which allows for a narrower or wider cross section when viewed from above.
Vertical and horizontal mount batteries are not interchangeable. Purchase the battery matching the bikes battery plug orientation
