48V 20Ah/30Ah Hardcase Triangle E-Bike Battery

48V Hardcase Triangle Battery for Stock-Voltage Builds

This 48V hardcase triangle pack is the conservative choice when you want a direct, same-voltage replacement for an existing 48V e-bike system. Two capacities are listed on this page: 20Ah (about 960Wh) and 30Ah (about 1,440Wh). Nominal energy is calculated from the listed voltage and capacity; usable energy varies with controller current limit, motor load, terrain and temperature.

Why stay on 48V

• Matches the 48V controller and the 54.6V charger most 48V hub-motor kits already use, so no controller swap or re-tuning is normally needed.
• Keeps the bike close to its original top speed and torque, which matters where local e-bike power or speed limits apply.
• A 13S configuration (roughly 54.6V at full charge) is the most widely supported standard for 48V parts, spares, chargers and displays.
• Lower system voltage than a 52V or 72V pack means less stress on stock wiring, connectors and controller input capacitors.

Capacity and realistic range

Range band assumes roughly 15-25Wh per km. Real range changes with rider and cargo weight, tyre pressure, terrain, wind, temperature, assist level and throttle use.

Fitment checks for this pack

• Confirm the controller is a 48V unit and that its input capacitors are rated above a 54.6V full charge.
• The charger must be a 48V (54.6V output) lithium charger with the correct mains plug for the US or Australia.
• Measure the triangle opening in three directions: length along the down tube, height along the seat tube, and width at the widest point.
• Allow clearance for the hardcase shell, mounting straps, cable bends, the discharge connector and the removal path.
• Match the discharge connector (XT60, XT90 or Anderson) to the existing harness on the bike.
• Check that the case will not foul the crank, bottle cage bosses, or the derailleur cable run.

Before ordering

Send your bike model, a photo of the controller label, connector photos and the three triangle measurements and we will confirm fit before you pay. BMS continuous current, exact case dimensions, net weight, cell brand and certification documents are not published on this listing — request confirmation for the current production batch if you need them. Related options: the 52V version if you want more speed from the same frame space, or the wider e-bike battery range. Warranty terms are on the warranty page.