BAFANG RACK batteries are the RACK series by BAFANG.
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This type of BAFANG battery installs on the « down tube » of your bike frame. In other words, it is the tube that connects the stem to the crankset. These batteries are designed for performance, lightweight, and efficiency.
By combining the latest technologies and years of expertise, BAFANG has developed TUBE Descendant batteries with fast charging and long range that offer very high efficiency. The shape follows the desired functionality. They are both elegant and practical. These semi-integrated batteries allow for much lighter and more aerodynamic bike frames.
Easy Handling …
Additionally, they allow for extremely easy handling, charging, and storage. TUBE Descendant batteries are practical and reliable for all types of electric bikes. They are offered with a wide range of options. With such a rich range, BAFANG is sure to provide an ideal solution that matches your configuration and needs to power your electric bike.
BAFANG TUBE Battery: BTF08
The shape speaks volumes about its function. In the case of the BAFANG BTF08 battery, it is semi-integrated, allowing it to equip ultra-light frames.
It is extremely easy to handle and recharge daily. Weighing only 3.3 kg, it provides an extraordinary amount of 600 Wh. Here you have a practical and high-performance component for any type of electric bike.
CAPACITY: 600Wh
WEIGHT: 3.3kg
CHARGE TIME: 5.5h
BAFANG TUBE Battery: BTF07
In the case of the semi-integrated BAFANG BTF07 battery, BAFANG’s primary focus is truly on lightweight design. Next comes the idea of easy handling. With a record weight of 2.4 kg, BAFANG delivers a compact energy of 450 Wh.
The power-to-weight ratio is absolutely outstanding. This is a high-level service and performance you will receive by choosing this solution. It will power a setup that matches your type of electric bike or your riding style.
CAPACITY: 450Wh
WEIGHT: 2.4kg
CHARGE TIME: 4.5h
5 Key Facts About the BAFANG TUBE Battery
- Frame triangle mounting: The TUBE battery fits within the frame triangle, using bottle cage mounts or a dedicated bracket for a clean, integrated appearance.
- Lower centre of gravity: Positioned centrally in the frame rather than above the rear wheel, the TUBE battery improves handling balance compared to a RACK mount.
- Discreet appearance: Its compact cylindrical or rectangular form blends naturally with the frame, giving the e-bike a closer resemblance to an unassisted bicycle.
- 36V and 48V versions: Available in both voltage standards to match all main Bafang mid-drive and hub motors.
- BMS cell protection: The integrated Battery Management System monitors cell health and protects against overcharge, over-discharge, and short circuits.
Frequently Asked Questions About the BAFANG TUBE Battery
How is the BAFANG TUBE battery attached to the frame?
The TUBE battery uses the frame’s standard bottle cage mounting points (two M5 bolts) or a dedicated bracket. It fits within the main frame triangle and is secured firmly before the power cable is routed to the motor. Frame triangle dimensions must be sufficient to accommodate the battery’s length and diameter.
Is the TUBE battery more discreet than the RACK battery?
Yes. Positioned inside the frame triangle rather than above the rear wheel, the TUBE battery is far less visible from most angles and does not alter the rear profile of the bike. However, it does require a frame with a large enough triangle to house it, which rules it out for some compact or full-suspension frames.
What range can I expect from a BAFANG TUBE battery?
Range depends on capacity and conditions. A 36V 13Ah TUBE battery typically offers between 50 and 90 km on moderate assist. Larger capacity options extend this range. Because TUBE batteries are physically limited by the frame triangle size, capacity is often slightly lower than equivalent RACK batteries.
Does the TUBE battery need to be removed for charging?
Most TUBE batteries can be charged either on the bike (via an accessible charging port) or removed for indoor charging. The charging port is usually located at the end of the battery case. Removal for secure indoor charging is straightforward using the mounting bracket’s release mechanism.
Also explore the RACK battery for higher capacity, the INTUBE battery for full integration, and pair with the BBS01 36V motor.
Frequently Asked Questions about the tube tube Battery
What capacity is recommended for the tube?
For daily commuters, 10–14 Ah (360–672 Wh) at 48 V is usually sufficient (range: 40–80 km). Touring cyclists and e-MTB riders benefit from 15–20 Ah (720–960 Wh) for full day rides over 100 km. Larger capacities increase weight and should be matched to actual usage requirements.
How do I mount the tube battery on my eBike?
The tube battery is secured to the frame or rack using the supplied mounting hardware. Ensure a firm fit and confirm the lock has engaged before connecting the cable. Never connect the cable before the battery is fully seated in its mount.
How long does the tube battery take to fully charge?
With a standard 2 A charger, a 14 Ah battery takes approximately 7 hours for a full charge. A faster 5 A charger reduces this to around 3 hours. It is recommended to complete the final 20% of charging with the standard charger to protect cell longevity.