48V 13.0/17.5Ah Hailong Down Tube Battery for Bafang Mid Drive Kit
US/CA/AU: 3 to 7 Bussiness Days.
EU/UK/DE/FR/PL: 2 to 4 Bussiness Days.
Varstrom had became Bafang Cooperation Brand since 2018.
Varstrom support 14 days money back guarantee.
TWO YEARS WARRANTY
One Year Warranty for all customers.
Two Years Warranty for all subscribers.
Varstrom 48V 13.0/17.5Ah Hailong Down Tube Battery with 54V Charger
Power and Protection
We must choose a ebike battery that will protect the eBike system. Varstrom Hailong ebike battery power and protect the Bafang drive kits, increase the life of the eBike motor.
Overpower Protection | Over Voltage Protection | Over Current Protection | Over Discharge Protection | Cell Balancing | Overcharge Protection | Short Circuit Protection
Tips for Riding eBike
|Increased Range||Reduced Range|
|Low Average Speed||High Average Speed|
|Light Load||Heavy Load|
|Flat/downhill Terrain||Uphill Terrain|
|Narrow Road Tires||Wide Knobby Tires|
|Sliding||Stop and Start|
- Rated Volt: 48 (V)
- Rated Capacity: 13/17.5 (Ah)
- Battery Cell: 2500mah/3500mah [Samsung/LG/Panasonic]
- Cell Arrangement: 13s5p/13s5p
- Battery Size: 366*91*111/366*91*111 (mm)
- Battery Weight: 4.1/4.1 (kg)
- Max Constant Discharge Current: 30 (A)
- Peak Current: 60 (A)
- Charge Voltage: 54.6 (V)
- Cut-off Voltage: 36.4 (V)
- Way of Charge: CC/CV
- Charging Time: 2000
- Charge Temperature: -15 to 65 (℃)
- Discharge Temperature: -15 to 65 (℃)
What are the parts?
So, let's talk about what is inside a Bafang mid drive motor kit package.
First there is a motor and a pack of screws for mounting. Then the display, Varstrom offers many displays as options. Then the battery it is. And then a waterproof 1T4 EB-Bus cable, the cable is used to connect the motor to the display, thumb throttle and eBrake levers. Then we'll have a chainwheel and cranks for this motor, and the chainwheel and cranks are customized to be used on the eBike conversion kits, you don’t need to use the chainwheel or cranks from your bike. The gear sensor will cut the power of the system when the rider shifts gears. Next is the eBrake levers or the eBreak sensor, if the customer wants to keep their own brake levers, you can choose the eBrake sensors. Then there is the speed sensor set for recording speed and mileage information for the system. There is also a thumb throttle for controlling the output of the motor.
At the same time, Varstrom offers some gift for our customers such as the 36V/250W sticker, bracket wrench, crank puller, XT60 connector cable for BBS01 or BBS02 or Anderson cable for BBSHD, headlight, gloves, cable ties, 73mm screws (for 73mm bracket) and the user manual.
Mid Drive Motor
250W 36/48V (68 to 73mm)
350W 36/48V (68 to 73mm)
750W 48V (68 to 73/100mm)
250W 48/52V (68 to 73/100/120mm)
Varstrom offers different displays for customers, and you can get an extra price discount ($10.00) by purchasing the meter along with the conversion kits.
Varstrom offer different batteries for customers, and you can get extra price discount ($20.00) by purchasing the battery along with the conversion kits.
Chain Wheel (Chainring)
Thickness: 3/32 (in)
Diameter: 5.98/7.1/7.5/7.8/8.5 (in)
Offset: 0/0.236/0.267/0.248/0.213 (in)
Diameter: 5.98/6.69/7.2/7.2/7.5 (in)
Offset: 0.279/0.480/0.370/0.370/0.728 (in)
Support 7/8/9/10 Flywheels
Length: 8.07 (in)
Compatible with Bafang mid drive kits. The cranks are used to replace the original cranks of the bike.
Shift sensor is used to cut the power of the motor when the rider is shifting gears, which can make the gear shifting smoother or quiet.
Mechanical eBrake Levers
Varstrom eBrake levers have built-in motor brake wires, it is used to replace your original mechanical eBrake Levers. EBrake levers connect to the 1T4 EB-Bus cable.
If you want to keep your Hydraulic levers or mechanical levers, you can choose this eBrake sensor to convert the original brake levers. The EBrake sensor connects to the 1T4 EB-Bus cable.
Speed Sensor Set
Speed sensor is used to record real-time speed and mileage information of the trip. Speed sensor connects to the motor.
The motor has a built-in automatic pedal assistant system (PAS), while you can also use the thumb throttle to control the forward movement of the eBike.
Varstrom provide a headlight as a gift for the eBike conversion kits connect to the motor.
Bafang eBike conversion kits installation.
Global one-stop e-bike conversion service for Bafang eBike Kits
Since 2018, Varstrom has been a Bafang partner brand. Over the last four years Varstrom has built very close relationships with our customers all over the world and Varstrom has set up warehouses and repair centers for complete e-bike conversion kits in many regions of the world. As soon as your complete e-bike conversion system is realized at Varstrom, you can get faster shipping from the warehouse and support from all these after-sales centers.
Shipping & Repairing
Varstrom and Bafang established very close cooperation. To provide Delivered Duty Paid (DDP) Product, we also established a lot of warehouse around the word to make sure that all the customer will get their package without extra tax fees and as soon as possible. Also we work with local bike stores to provide repairing service. You can get one-year guarantee and lifetime warranty from these bike stores.
Varstrom eBike Conversion Service
- BAFANG BBS01B 250W/36V
- BAFANG BBS01B 250W/48V
- BAFANG BBS01B 350W/36V
- BAFANG BBS01B 350W/48V
- BAFANG BBS02B 500W/36V
- BAFANG BBS02B 500W/48V
- BAFANG BBS02B 750W/48V
- BAFANG BBSHD 1000W/48V
- BAFANG BBSHD 1000W/52V
Varstrom offers Bafang and Accolmile displays. We highly recommend customers to consider Accolmile meters because they have the same performance as Bafang's but the price is much cheaper, it helps you complete the ebike conversion with lower budget.
Greenway is one of Varstrom's battery suppliers, it is a leading company specializing in the battery design and manufacture. We have established a common goal to provide the safest, best performing and most cost effective eBike batteries for all those who use Bafang eBike motors.
If you don't know who is Greenway, you may know DURACELL and Energizer, they are top dry cell brand. And Greenway is their supplier.
DLG is the other one of Varstrom's battery suppliers. DLG provides customized green energy solutions based on core technology of battery cell manufacturing. DLG started E-BIKE project in 2007, 15 years of development has ensured the quality and safety of its eBike battery, which we can use their batteries with confidence.
DLG has latest equipment and latest technology, Varstrom develop its new battery with DLG for better, safer batteries for Bafang Drive Kits.