20ah Battery with Rear Rack

ONLY COMPATIBLE WITH BAKCOU SD 2025 MODELS The 20ah Battery Extension for SD models provides a significant range boost, increasing total battery capacity to 40ah. Designed to plug directly into the side of your bike's frame, this battery extension allows both batteries to drain simultaneously. The quick-release rear rack attachment makes installation simple and integrates smoothly with SD model bikes. This extension is incredibly valuable for riders planning long-distance trips or backcountry adventures who need extended battery life. The battery encasing is engineered to be compatible with our Rear Basket Accessory, adding versatility to your setup.  Important: Only compatible with SD Models