Have we seen the Quantya, Zero and Blade?
Yes.  These bikes fall into a different category so it's hard to compare them.  While all of the aforementioned  bikes dirtbikes with huge amounts of power and a high price tag, they're limited to MX tracks and private property. Stealth Electric Bikes can make use of a lot more riding areas without creating too many waves. 


Does pedaling recharge the batteries?
No


How far can I go on a single charge?
This depends on the rider, terrain, wind conditions and how much you want to pedal.  The faster you go the quicker the battery will drain.  Factors such as hard takeoffs, hills headwinds all play a part also.
 
A minimum range of around 30km (without pedaling) is achievable, but some smart riding and proper use of the gears and pedals will see this increase to 60+km quite easily.
 
Technically the range is unlimited providing that you don't mind pedaling.


How long does it take to recharge?
Charge time for the Fighter is 2 hours maximum and for the Bomber 3.5 hours maximum..

Do they have regenerative braking?
No.


Can I ride it in the rain?
Yes.  These bikes are water resistant.  We advise that you do not  ride them through deep water or immerse any of their components in water.


How quiet are they?
Put it this way.  At 20km/h and above all you can hear is wind noise.  Even slick tyres are noisier than the motor.  Because most other electric bikes are chain driven they still emit enough noise to be annoying.


Will I get fit riding one of these?
Yes.  It feels unnatural to ride these bikes without pedaling so by the end of a big ride you can expect to be puffing and sweating.  The only difference is you've covered a lot of ground in a short amount of time.