Hi there.Has anybody any info on the above e bike that I have purchased as a pre owned.Unable to use at the mo or ever as having battery problems at the moment.Is it pedal assisted or throttle powered,thumb throttle on handlebars.Suspect about ten years old but both in fantastic condition.Motor 200 watt internal geared,brushed,controller DKY3616.Just reading from pamphlet.Are they worth throwing a bit of money at them.Any info would be most appreciated.