F20 Max Battery
F1 battery
F20 Light battery
FM8 battery
FM9 battery
FF20 Polar front battery
FF20 Polar rear battery

Battery for Ebike


Model: F20/F20 Pro (36V/18Ah)

F20/F20 Pro (36V/18Ah)
F20 Max (48V/22.5Ah Samsung cell)
20F054 (36V/10.4Ah)
F26 Pro (36V/10Ah)
F26 Pro (36V/14.5Ah)
F28 Pro (36V/14.5Ah)
KRE27.5 (36V/10Ah)
Hailong One (36V/13Ah)
F1 (36V/8.7Ah)
F20 Light (36V/14.5Ah)
FM8 (36V/14.5Ah)
FM9 (36V/15Ah)
FF20 Polar Front Battery (48V/10.4Ah)
FF20 Polar Rear Battery (48V/10.4Ah)
F20 Master (48V/22.5Ah)-Black color
F26 CarbonM / F26 CarbonX (48V/22.5AH)
F20 X-Max (48V/30Ah)
F28 MT (36V/14. 5Ah)

Waterproof and solid plastic shell to protect the battery from scratch. 

Up to 1000 times of charging. Before the battery being shipped out, the charge and discharge performance is tested in all aspects to ensure the battery is safe and stable.

We use high-quality battery cells; the protection board can prevent overcharge, over-discharge, over-current, short circuit, and ensure long service life. For safety and quality, choose a reliable brand battery. 


  • If you don't need to use the battery for a long time, charge it up to about 75% capacity. At 75%, the battery will degrade less than at higher charge levels.
  • Monthly check the battery's charge level once a month and charge it up to 75%.
  • Store the battery indoors in a dry space, away from heat or flame sources, and out of direct sunlight.


  • The battery can be charged while it is attached or detached from the e-bike. (You can remove the battery by inserting the key into the lock on the side face of the battery slide. To lock the battery, insert the key into the lock on the side face of the battery slide.) 
  • Use the original charger to charge the battery.
  • Only charge the battery indoors in dry spaces which are not excessively hot or cold.
  • Ensure there is no dirt or debris nearby when using the charger. Keep the charging port clean and dry. Wipe the dust around it periodically.
  • When charging the battery, first connect the charger with the battery end, and then plug the charger into power.
  • The light on the charger will be red when the battery is charging and will turn green when charging has finished.  
  • Avoid leaving the charger plugged in when the battery is fully charged.  
  • Do not charge the battery if you notice the battery is damaged, excessively hot, leaking, smelly, or discolored.
  • Charging the battery should take approximately 5-6 hours if the battery is mostly empty.
  • Battery charging times may increase with battery age and usage.


  • Do NOT submerge the battery in a liquid of any kind.
  • Do NOT use any metal to touch the charging port, that will cause a short-circuit.
  • Turn off the battery when not in use and before removing it from the e-bike.
  • Only grab the charger by the plug and not the cable when plugging and unplugging from the wall.
  • If the battery has trouble charging, discontinue charging and contact Fafrees immediately.

Note: Lithium-Ion batteries can be dangerous. Take care when using and charging your battery. Failure to follow the above guidelines could result in damage to property and/or serious injury. 

Package included
  • 1 x Bike Battery ( some battery with keys )
Shipping Details about batteries:
  • Battery production time: 3-5 Days
  • Delivery time:  20 Working Days from China
  • Free shipping