48V/52V 13Ah Hailong Downtube E-Bike Battery – 30A BMS, Anderson Connector

Delivery 5 To 8 Days

The Hailong (often nicknamed "Shark" or "Dolphin" due to its shape) is the industry-standard housing style for downtube-mounted electric bicycle batteries. It is highly popular for both DIY e-bike conversions and commercial mid-drive or hub-motor kits because of its balanced weight distribution and ease of installation. Below is a detailed breakdown of the specifications and features typically found in a 48V/52V 13Ah Hailong Battery Pack.

• Voltage: 48V or 52V (ensure this matches your motor controller's requirements).

• Capacity: 13Ah (Amp-hours). This determines your "fuel tank" size; 13Ah at 48V provides roughly 624Wh of energy, which typically offers a range of 30–50 km depending on terrain, rider weight, and pedal assist levels.

• Case Type: Hailong (ABS plastic). Designed to mount onto the water bottle bosses of your bicycle frame's downtube.

• BMS (Battery Management System): 30A. The BMS is the "brain" of the battery. A 30A rating means the battery can safely provide a continuous current of up to 30 Amps to your motor without triggering a shutdown.

• Connector: Anderson Connector. These are standard, heavy-duty electrical connectors favored for e-bikes because they are easy to disconnect and can handle high-current flow.