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[ammonsh]

On zero S, if I stop and recharge for an hour or so, how much (%) will the battery recharge?  5%  20%? 

[protomech]

Depends upon the size of the battery pack installed.

For a 2014 Zero S ZF11.4, 1 hour of charging with the onboard 1.3 kW charger will restore approximately 13% of the battery charge, good for 18 miles in the city or 9 miles @ 70 mph.

[ultrarnr]

On my SR one hour of charging would get me about 10% charge which equated to about 8-9 miles at 55 MPH. You have to keep in mind what the terrain is like where you ride. I live in eastern NC with rolling hills. The max I can expect is about 70 miles at 55 MPH. I think the range data posted on Zero's web site is accurate for someplace very flat. There is no way I could ever hope to get 85 miles at 55 MPH where I live.

[WindRider]

Hills reduce range, no doubt about it.

[Richard230]

Hills reduce range, no doubt about it.

And going downhill, regen or not, is not going to recharge your battery pack very much.  I rode down eight miles of fairly steep grade last weekend in Eco mode, not using the throttle for more than a minute or two, and only saw a 1% increase in battery power on my instrument display.  Regen is nice to have to cut the need for braking and to provide an easy way to moderate your speed while riding, but it really doesn't help much to extend your overall range - in my observation.

[Electric Terry]

Adding just a single extra Quiq charger can cut your charge time in half.  Highly recommended.  You can use 2 Delta Q's (750-960 watts each) on one 20 amp outlet (the one with the horizontal and vertical slot on the right hand side). 20 amps * 125 volts = 2500 watts max, but only 2000 watts continuous (80%). 

At very low states of charge (under 50%) you should be able to run the onboard and a delta Q from one single 20A outlet if nothing else is on that circuit.  Example if you unplug the coke machine or ice machine plugged into the outlet you should be able to run both chargers without tripping the circuit.

What I really recommend is carrying 2 quiq chargers (delta q's) and an extension cord.  Park close to a 20A outlet and run both delta Q's off that.  And use your 50 foot (14 gauge or lower) extension cord to plug the onboard charger to a different outlet on a different circuit.

If you stop for an hour and a half for lunch and conversation with other bikers on a group ride, you can recharge about half your battery back during this time.