Amazon.com : ANCHEER Electric Bike for Adults 500W Motor E-Bike with 48V 500WH Removable Battery, 3.5H Fast Charge, Shimano 21-Speed Gears, 26 * 2.1" Electric Mountain Bike, Color Display, Cruise Control :
Specialized Turbo Levo Gen 2 Battery Pack - 500Wh – Sierra Bicycle Supply
Replacement Electric Bike Batteries Guide | EBR
SHIMANO STEPS Integrated Type Battery for Down Tube (504 Wh) | SHIMANO BIKE-EU