Skip to product information
1 of 15

Recommend Battery Options

Recommend Battery Options

Regular price $387.00 CAD
Regular price $0.00 CAD Sale price $387.00 CAD
Sale Sold out
Varstrom offers free Shipping.

Product Core Data

Battery Capacity

Mileage for 36V 20.0/25.0Ah HaiLong Downtube Battery

Conservative Mileage for 36V 20.0Ah Used on Motors

  • Throttle Mode: 58km (36V/250W), 51km (36V/350W), 46KM (36V/500W)
  • PAS Mode: 115km (36V/250W), 103km (36V/350W), 92KM (36V/500W)

Conservative Mileage for 36V 25.0Ah Used on Motors

  • Throttle Mode: 72km (36V/250W), 65km (36V/350W), 58KM (36V/500W)
  • PAS Mode: 145km (36V/250W), 130km (36V/350W), 115KM (36V/500W)

Battery Installation Measurement

  • Battery and Socket (inch): 14.66*3.58*4.97

File: Hailong_G80_large_battery_installation_measurement

Mileage for 48V 13.0/17.5Ah HaiLong Downtube Battery

Conservative Mileage for 48V 13.0Ah Used on Motors

  • Throttle Mode: 50km (48V/250W), 40km (48V/500W), 35KM (48V/750W)
  • PAS Mode: 100km (48V/250W), 80km (48V/500W), 75KM (48V/750W)

Conservative Mileage for 48V 17.5Ah Used on Motors

  • Throttle Mode: 67km (48V/250W), 55km (48V/500W), 50KM (48V/750W)
  • PAS Mode: 135km (48V/250W),110km (48V/500W), 100KM (48V/750W)

Battery Installation Measurement

  • Battery and Socket (inch): 14.46*3.54*4.37

File: Hailong_battery_installation_measurement

Mileage for 52V 19.2Ah HaiLong Downtube Parrot Battery

Conservative Mileage for 52V 19.2Ah Used on Motors

  • Throttle Mode: 50km (52V/10000W)
  • PAS Mode: 100km (52V/10000W)

Battery Installation Measurement

  • Socket (inch): 13.6*2.6
  • Battery (inch): 14.4*3.7*4.9

Suitable Motor

If you want to buy a Varstrom eBike battery as replacement, please know that Varstrom battery can be the power source for the BAFANG UART protocol mid drive conversion kits or BAFANG hub kits. But it is not suitable for BAFANG CAN protocol mid drive motors.

Upgraded Connection Method

The old-style connectors used a multi-pin socket, which is like an electrical socket at home, but it has more pins, which is not good for e-bike batteries that may need to be connected frequently. So we upgraded the connector and adopted the contact connection method. The new connection method not only simplifies the installation and removal of the battery, but also improves the duration of the battery connector.

Battery Management System

  • Overpower Protection
  • Over Voltage Protection
  • Over Current Protection
  • Over Discharge Protection
  • Overcharge Protection
  • Short Circuit Protection
  • Cell Balancing

Anti-theft Safe Lock

Ebery Varstrom Hailong battery has the lock and keys, the lock can help to fix the battery and prevent others from taking the battery, you can use the keys to lock the battery when you install it on the socket and unlock to take the battery for charging.

USB Connector Avaliable

Each Hailong battery is equipped with a USB port, which can charge your mobile phone or other devices. At the same time, you can judge the power of the battery through the indicator light of the battery. 1 Red+3 Green (100%), 1 Red+2 Green (75%), 1 Red+1 Green (50%), 1 Red+0 Green (25%), it means you need to charge the battery.

Other Battery Options

Varstrom also provide other battery for Bafang eBike conversion kits.

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
Tailwind Headwind
Sliding Stop and Start
Summer Winter


  • Rated Volt: 48 (V)
  • Rated Capacity: 13/17.5 (Ah)
  • Cell Arrangement: 13s5p/13s5p
  • Battery Size: 36.8*9.1*11.1/36.8*9.1*11.1cm
  • Battery Weight: about 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: 1000
  • Charge Temperature: -15 to 65 (℃)
  • Discharge Temperature: -15 to 65 (℃)

Package Include

  • 1*eBike Battery
  • 1*Charger
  • 1*XT 60 Cable
  • 1*Waterproof Bag

Text block

View full details