Home » 36V 48V 52V E-Bike Rear Rack Battery (17.5Ah/20.8Ah) for Bafang & Tongsheng Kits

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Rear rack e-bike battery mounted on electric bicycle

36V 48V 52V lithium-ion battery pack close-up

Rear rack battery power switch and charging port detail

Bafang and Tongsheng compatible e-bike battery on rear carrier

Electric bike conversion kit battery with security lock key

Actual colors may differ slightly from photos due to lighting and screen settings.

36V 48V 52V E-Bike Rear Rack Battery (17.5Ah/20.8Ah) for Bafang & Tongsheng Kits

(3)

Regular price $625.22

Only 1 left

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Option

48V18.2Ah (840Wh) 36V20.8Ah (748.8Wh)

Quantity

Ready to work out of the box!

Includes all key accessories and simple setup instructions for quick start!

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Expected arrival within 12 – 18 days

Upgrade your electric bike conversion with our high-capacity Rear Rack Lithium-Ion Battery Pack, engineered to deliver reliable power and extended range for Bafang and Tongsheng mid-drive and hub motor kits. Designed for convenience and safety, this sleek rear-rack battery integrates seamlessly into your e-bike setup while freeing up frame space.

Universal Voltage Options: Available in 36V, 48V, and 52V configurations to perfectly match your motor controller requirements.
Extended Range & Capacity: Choose between 17.5Ah and 20.8Ah high-density capacity options built with premium 18650 Li-ion cells for longer rides per charge.
Built-In BMS Protection: Features an advanced Battery Management System (BMS) that safeguards against overcharging, over-discharging, over-current, and short circuits.
Sturdy Rear Rack Design: Easy to install and remove with a secure lock mechanism, making charging off the bike simple and convenient.
Wide Compatibility: Ideal for e-bike conversion kits, commuters, and cargo bikes powered by Bafang, Tongsheng, and other standard motor systems.