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

Electric bikes are becoming increasingly popular due to their eco-friendly nature and the convenience they offer for commuting and leisure activities. One of the most important components of an electric bike is the battery, as it determines the range and power of the bike. The Joubi 36V/48V Rear Rack Ebike Battery is a high-quality lithium battery pack designed to provide long-lasting power for electric bikes. In this review, we will take a closer look at the features and performance of this battery, and evaluate its suitability for different types of electric bikes.

Key Specifications

The Joubi 36V/48V Rear Rack Ebike Battery is available in various models with different nominal capacities ranging from 10Ah to 23Ah. The cell specification is 2500mAh 18650Cell, and it has a life cycle of 1000 cycles. The battery size is 380mm*160mm*85mm, and the standard charge current is 2A. The maximum continuous charge current is 3A, and the charge cut-off voltage is 42V for the 36V model and 54.6V for the 48V model. The maximum continuous discharge current is 30A, and the discharge temperature range is -20-60°C. The battery is suitable for 20-28 inches bikes and comes with a rear rack for easy installation.

Features and Design

The Joubi 36V/48V Rear Rack Ebike Battery is designed with a sturdy aluminum shell that provides durability and protection for the electric cells inside. The battery has a modern shape design that makes it easy to install and remove, and the included rear rack ensures a secure and stable attachment to the electric bike. The rear rack also features a taillight that enhances safety during night rides, and a battery indicator that reminds users to charge the battery in time to avoid running out of power.

This battery is suitable for 20”-28” wheel electric bikes and comes with a lock to prevent theft. The lock ensures that the power supply remains secure, while the rear handle makes it easy to carry and transport the battery. The built-in 30A BMS protective plate prevents overcharging, overdischarging, overcurrent, and short circuits, which helps to extend the battery’s life expectancy.

Performance and Quality

The Joubi 36V/48V Rear Rack Ebike Battery is equipped with high-quality electric cells that have been rigorously tested for performance and reliability. The battery has passed appearance and function tests before shipment, ensuring that it meets quality standards. With a charge cycle exceeding 1000 times, the battery has a long life expectancy of up to 5 years, making it a cost-effective and sustainable choice for electric bike enthusiasts.

Compatibility and Convenience

This battery is suitable for electric bikes with motors ranging from 200W to 1000W, and it comes with multiple discharge connector options including XT60, T-plug, and bullet connectors. The default connector is XT60, but users can specify their preferred option when placing an order. The battery charger included with the pack has an output of 42V/54.6V and a current of 2A, ensuring a fast and efficient charging process.

The Joubi 36V/48V Rear Rack Ebike Battery is designed for easy assembly and is compatible with a wide range of electric bike models. Its lightweight and portable design make it easy to carry and transport, while the rear rack provides a secure and convenient attachment to the bike. The battery’s lock and taillight features enhance safety and security, making it an ideal choice for daily commuting and outdoor adventures.


The Joubi 36V/48V Rear Rack Ebike Battery offers a reliable and efficient power source for electric bikes, with a range of models to suit different user preferences and requirements. Its high-quality construction, long life expectancy, and user-friendly design make it a standout choice in the market for electric bike batteries. With its advanced features and performance, the Joubi 36V/48V Rear Rack Ebike Battery is a recommended option for electric bike enthusiasts looking for a dependable and durable power supply for their rides.

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