The EUNORAU Hailong Pro downtube battery is a versatile lithium battery system designed for electric bikes and trikes. It comes in multiple voltage and capacity options, including 36V (10.4Ah, 13Ah, 17Ah) and 48V (10Ah, 14Ah), giving riders flexibility based on range and power needs. Moreover, it is built using high-quality cells from brands like Samsung, LG, or Sanyo, ensuring stable performance and long lifespan.
Battery Capacity and Performance
This battery offers multiple configurations, allowing riders to choose between higher range or lighter weight. For example, the 36V 17Ah option provides extended range, while the 48V 14Ah option delivers stronger power output for higher-performance e-bikes. As a result, it supports smooth acceleration and consistent motor performance across different riding conditions.
Range and Riding Use
Depending on the selected capacity, the battery can support short commutes or long-distance rides. Higher Ah ratings provide more stored energy, which directly increases range. Therefore, it is suitable for commuting, delivery use, and recreational riding.
Design and Mounting
The Hailong Pro uses a downtube-mounted “shark-style” case, which attaches securely to the bike frame. In addition, it includes a mounting base and locking system, so riders can easily remove the battery for charging or security. This design also helps maintain balance and a clean bike appearance.
Safety and Protection
The battery includes a built-in Battery Management System (BMS) that protects against overcharging, overheating, and short circuits. Furthermore, it helps balance the cells during charging, which improves long-term durability and safety.
Charging and Compatibility
The 36V versions typically charge up to 42V, while the 48V versions charge up to 54.6V, using compatible chargers. Therefore, it is important to match the correct charger with the selected battery voltage to avoid damage.
Best For
The EUNORAU Hailong Pro downtube battery is best suited for e-bike and trike riders who want a flexible, high-quality battery with multiple capacity options for commuting, long rides, and DIY conversions.
Eduardo Dominguez –
I’m impressed with how easy everything was. Definitely exceeded my expectations.
Andrew Johnson –
I felt confident and well-informed every step of the way.
Blake Foster –
The entire process was simple and stress-free.
Eduardo Dominguez –
I had a really smooth experience from start to finish. Everything was handled professionally.
Andres Rojas –
Everything arrived on time, just as promised.
Trevor Howard –
The whole experience was straightforward and enjoyable.
Zachary Wright –
I’ll definitely be coming back again in the future.
Juan Delgado –
Customer service was very helpful and responsive. They answered all my questions quickly.
Pablo Fuentes –
The entire process was simple and stress-free.