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Joubi 36V/48V Rear Rack Ebike Battery: A Comprehensive Review

As the demand for electric bikes continues to grow, so does the need for reliable and efficient battery packs. The Joubi 36V/48V Rear Rack Ebike Battery is a must-have for electric bike enthusiasts who are looking for a durable and high-performance battery pack. In this review, we will take an in-depth look at the features, specifications, and overall performance of this battery pack, as well as its compatibility with different bike models.

Specifications and Features

The Joubi 36V/48V Rear Rack Ebike Battery comes with a range of features and specifications that make it a standout option for electric bike riders. The battery is available in 36V and 48V models, with nominal capacity options ranging from 10Ah to 23Ah. The cell specification is 2500mAh 18650Cell, and the battery is designed to withstand up to 1000 charge cycles, ensuring a long life expectancy.

With dimensions of 380mm x 160mm x 85mm, the Joubi battery is compatible with 20-28 inch bikes and comes with a rear rack for easy installation. The standard charge current is 2A, with a maximum continuous charge current of 3A. The charge cut-off voltage is 42V for the 36V model and 54.6V for the 48V model, and the charge temperature range is between 0-45°C.

For discharge, the Joubi battery offers a maximum continuous discharge current of 30A, with a discharge temperature range of -20-60°C. The battery comes with multiple discharge connector options, including T-plug, bullet, and XT60, with the default option being XT60.

Package Inclusions

When purchasing the Joubi 36V/48V Rear Rack Ebike Battery, customers can expect to receive the lithium battery, a battery charger, and a rear rack specifically designed for 20-28 inch bicycles. The package also includes a manual and necessary accessories for installation and maintenance.

Design and Build Quality

The Joubi battery features a sturdy aluminum shell that not only protects the internal components but also makes it easy to transport. The modern shape design ensures easy installation and removal, while the locking mechanism on the rear rack prevents theft of the power supply. Additionally, the rear handle makes it convenient to carry the battery while traveling.

One of the standout design features of the Joubi battery is the inclusion of a taillight, which enhances safety during rides, especially in low-light conditions. The battery indicator also provides real-time information about the battery’s charge status, ensuring that riders are well-informed about when to recharge the battery.

Performance and Reliability

The Joubi 36V/48V Rear Rack Ebike Battery is equipped with high-quality electric cells and a built-in 30A BMS protective plate, which effectively prevents overcharging, over-discharging, over-current, and short circuits. This ensures the long-term reliability and safety of the battery pack, giving riders peace of mind during their electric bike journeys.

Every Joubi Lithium battery undergoes rigorous testing for both appearance and function before shipment, ensuring that only the highest quality products reach the customers. The battery’s charge cycle exceeds 1000 times, with a life expectancy of up to 5 years, making it a cost-effective and durable investment for electric bike enthusiasts.


The Joubi 36V/48V Rear Rack Ebike Battery is designed to be compatible with a wide range of electric bike models, particularly those with wheel sizes ranging from 20 to 28 inches. This broad compatibility makes it a versatile option for riders looking to upgrade or replace their existing battery packs.

Whether used with a 200W or a 1000W motor, the Joubi battery is capable of delivering consistent performance, thanks to its maximum constant discharge current of 30A. Additionally, the multiple discharge connector options provide flexibility for connecting the battery to different electric bike models.


Overall, the Joubi 36V/48V Rear Rack Ebike Battery is a standout option for electric bike enthusiasts seeking a reliable and high-performance battery pack. With its robust build quality, advanced safety features, long cycle life, and comprehensive compatibility, the Joubi battery is a solid investment for anyone looking to upgrade their electric bike’s power supply.

Whether you’re a casual rider or a daily commuter, the Joubi battery provides the power and reliability needed to enjoy a seamless electric bike experience. With its included rear rack, easy installation, and modern design, the Joubi battery is a practical and convenient solution for electric bike enthusiasts of all levels.

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