Quality Bicycle Products - The Bosch PowerPack 500 is the same size as the PowerPack 400 and only slightly heavier, but offers a longer range. When using the Bosch Standard Charger, this
Bosch PowerPack 500 eBike Battery - Frame Mount, BDU2XX, BDU3XX | Tree Fort Bikes
Bosch PowerPack 500 Frame Battery - Simple Bike Store