With this accessory you can connect two battery as long as they are the same voltage into the scooter circuit. You can also charge both batteries from the scooter directly. The accessory has to be added into the circuit of the existing original battery and controller. If you upgrade to dual battery setup with our larger capacity motherboards this will increase the power of your scooter since there is now more input from the batteries and the motherboards are able to pass more output to the motor.
Caution:
When using both batteries you cannot have a difference in battery voltage level!

Trunk Cushion
NQi-Series Carbon Wing (Set)
Turbo Carbon Rear Mudguard Fender
NQi-Series Carbon Fiber Handrests
NIU Compatible M+ / UQI Battery 60V (100-150KM Range)
NQi-Series Compatible Electric Heating Handlebars
NIU Fluorescent Logo Sticker
Scooter Windshield Anti Rain / Fog / Dust Sticker
NIU Compatible Scooter Bodykit Panels
NIU KQi Series KickScooter Handle Covers
NIU NQi-Series Battery 72V (100-160KM Range)
NIU KQi Series Left and Right Brake Handlebars
NQi-Series Extra Comfortable Seat Cushion
NIU N-Series Rear Tail Rack
Rear Mudguard
Folding Handrail 


Ralph (verified owner) –
Pleasant buying experience.
Elliot (verified owner) –
I installed it, easy installation btw and everything runs fine. Exactly what I needed…
Owen (verified owner) –
Good quality!
Jasper (verified owner) –
A gear all owner should have. Fits my model perfect!
Garrett (verified owner) –
Fantastic customer service excellent products!
Myron (verified owner) –
Pleasant buying experience.
Bernie (verified owner) –
Nice styling
Otto (verified owner) –
Pretty fast delivery.