Replacement battery 36 V 11 Ah (400 Wh) for Electric Bike Battery for Bosch Power Pack Classic+ 300 and 400 (R400) by GTE : Amazon.de: Sports & Outdoors
Bosch Akku PowerTube 400 - Vertical | BIKE24
Bosch Powerpack 400 E-Bike Akku (0275007505) for sale online | eBay