I have actually been looking into electric bicycles for my GF so she can go with me on rides. The replacement batteries (400ah) for the Bosch equipped bikes cost $847! The range is about 25-75 miles depending on levels of assist.
That’s just crazy. The 4ah Ryobi batters are normally priced at about $100 each. However about once a month you can get a 2 pack for that price and I picked up a pair on the holiday sale stuff for $80 for a pair. The thing about the 4ah batteries is they only come with certain tools. Most of the tools come with the 2ah batteries and some of the super lightweight stuff like lights and radios come with the 1ah.