What is the motor torque on the Mariner Step-Thru? Can you get a bigger battery to give it more range? Is this bike in stock right now?

The motor we use on the folding electric bike Mariner Step-Through is Bafang 48v 500w power and 80 N.m. of torque, At this point of the time the bike comes standard with 16Ah Li-ion battery with Samsung cells. We do not have option for upgrade, but you can always purchase second battery if you plan to go longer distance.
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