Our 52-volt battery pack is built to go the distance with better acceleration, stronger torque on hills, and a smoother ride from start to finish. The 15Ah and 20Ah packs are the same size and are compatible with: Higgs ST, Higgs Cargo, Higgs Plus, Gigi and Alpha ST bikes purchased November 2025 - Present . 15 Amp — The everyday workhorse Solid range. Real power. Everything you need for your morning commute, a beach session, or a neighborhood cruise. 20 Amp — More miles, same bike Want to ride farther without stopping to charge? Step up to the 20Ah. It's the exact same size as the 15Ah... no modifications, no hassle. Just a higher capacity cell that gives you more range on every charge. Not sure which battery fits your bike? We'll help you lock in the right one. Reach out to our team: info@murfelectricbikes.com or 949-218-5920.