20*4.0 inch bottle battery fat tire mini electric bikeSpecifications A7AB20 ModelShuangye 20 inch e bike A7AB20Wheel20 inch wheelColorWhite/Black/GreenTyre20"*4.0 fat tireMotorShuangye 36v/48v 250W/350W/500W brushless motorGearShman 7 Speed Battery36V10AH/12AH 48V15AH Lithium battery PASfive adjustable speed 1:1 pedal assistant Range1:1 PAS mode, 40-60KMChainRust resistant chainWarrantymotor & battery 1 yearsHandle barAluminum alloyChargerAC100V-240V,42V 2AcranksetAluminum alloyCharging time5-7 hoursSaddleComfortable SaddleMax speed25km/h 30km/h 35km/h based on flat road without windDisplayLCD DisplayLoading200KGheadlight1 W LED headlightFrameAluminum Alloy folding framesticker &colorShuangye(can OEM)Wheel rimAluminum alloyPedalaluminumFront forksuspension aluminum forkCertificationCE EN15194Front brake160 disc brakeWeightN.W: 23kgs G.W:32kgsRear brake160 disc brakeCarton size142*34*72CMMotor Effect≥80%20'GP container75PCS(5.69*2.13*2.18)An electric fat bike with a 250/350/500 watt in the rear wheel, provides excellent stability on soft terrain,20/26 inch frame for your choicePowerful 36/48 volt Lithium-ion battery pack built with high quality, it's removable for charging on or off the bicycle frame but relies on a dongle adapter to accomplish this (which could get lost more easily than if they used the same port type)Offers shimano 7 gear combinations for easier climbing and low-speed starts, uses a torque sensor to activate the motor so pushing harder delivers more power