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                               Scott MacGregor
                            Plainville, MA 02762
                          Phone: (508) 695-3717
                            Fax: (508) 643-0233





















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                               Frequently Asked Questions


Back to Scooter Page 


 1)  What are the differences among the Currie Scooters?  


Scoot-e (2000)

Phat-e  (2001) Phantom (2001)   Flyer    (2001) Super Scoot-e  Flyer SE & 
Speed* 13.5* 13.5* 13.5* 15.5* 15.5*  17.0* 16.0*
Range** 7-9 mi* 7-9 mi* 7-9 mi* 8-10 mi* 8-10 mi* 8-10 mi* 8-10 mi*
Hill climbing good good good great great excellent excellent
Acceleration good good good great great excellent excellent
Free-wheel Currie clutch yes yes yes yes yes yes yes
Battery 24V-10A/Hr 24V-10A/Hr 24V-10A/Hr 24V-10A/Hr 24V-10A/Hr 24V-10A/Hr 24V-10A/Hr
Motor*** Lo-Kol*** Lo-Kol*** Lo-Kol*** Hi-Kol*** Hi-Kol*** Finned MAC 600W  MAC
Deck  Wood Laminate Aluminum Aluminum Aluminum Wood Laminate Aluminum Aluminum
Suspension no no no no no Flyer SE no 2002 yes (front)    yes (front &  rear)
Brakes Front caliper Rear band Front caliper Rear band Front caliper Rear band Front caliper Rear band Front caliper Rear band Front caliper Rear band

**2002 uses front V-brake
Front V-brake 

 Rear band

Can you add the Internal
Battery Upgrade?
no yes yes yes no yes yes
Long range or
36 volt
Can you add the External Battery Upgrade? yes yes yes yes yes

Adjustable handlebar height? no no yes yes no yes no
Is there an adjustable height handlebar option? yes yes included included yes included yes
Can you add a seat? yes yes yes yes yes yes yes
Can you add the EVdeals basket option? no yes yes yes no yes no

    * Speed varies with conditions-see Dyno tests for details
  ** Range varies with conditions-see Dyno tests for details
*** All 2001 Currie scooters use the new Kollmorgen motors.
       The motor is black in color, and has heavy heat sink fins
       around the motor body. There are two sizes, Lo-Kol and
       Hi-Kol. The Lo-Kol motor provides somewhat less power
       for hill climbing and acceleration. The Hi-Kol motor is
       larger, and offers better hill climbing, acceleration, and a
       higher top speed.


 2)  What's the best way to charge my battery?

SLA batteries can be charged by using either constant
voltage or constant current chargers. Some chargers utilize a constant current
mode. Although this requires a more sophisticated (and expensive) circuit,
it results in a reduced charge time. In addition, the some chargers
monitor voltage during the bulk charge phase and switch to a "maintenance
mode" when the voltage reaches 14.8 volts. (the optimum finish voltage for
cyclical applications)

The charging algorithm goes like this: Initial charge current is limited by
the maximum capacity of the charger model. During this phase, voltage is
monitored as well. When it reaches 14.8 volts, the charger holds it
constant. The charge current gradually reduces till the battery is at full
charge. When current reaches a preset minimum, the charger switches to a
constant voltage mode, and drops its output to 13.8 volts. (maintenance
mode) In this constant voltage mode, the battery determines the charge
current. (trickle)

As for cyclic vs. standby: The battery application determines this.
Batteries used in alarm systems, standby power supplies, cars, etc., are
generally maintained in a "ready" state for long periods of time.
Occasionally, they may be called upon to deliver large amounts of current,
but this is not the norm. The generally accepted voltage for this "trickle"
charge (standby) condition is ~13.8 volts. Under these conditions, the
charger will be supplying ~50 to a few hundred milliamps depending on the
A/Hr rating of the battery.

In cyclic applications, (such as with scooters and bikes) this "standby" or
"maintenance" charge voltage results in an incompletely charged battery.
This is the reason why a standard automotive charger is a poor choice for
e-bike applications. To obtain a "full" charge, the voltage must be  raised
to ~14.5-15.0 volts until the battery current reduces to some predetermined
level, then is either shut off completely, or reduced to the "standby"
voltage of 13.8 volts mentioned above for long term maintenance.



3) When should I charge my electric scooter or bike batteries?

The simple answer: Every time you use the scooter or bike! The most often used batteries in small electric vehicles are SLA batteries. (sealed lead/acid) These batteries have little or no "memory effect" as found in many portable electronic devices, so recharging after every use is not a problem. In fact, it is the best way to insure longevity. However......be sure to read and follow the instructions that come with your EV. Some newer scooters and bikes now use NiCAD and NMHD batteries, and may require a different charging techniques.



 4) What kind of charger should I buy?

In general, the charger that comes with your scooter or bike is adequate. You may, however, want to re-charge more quickly than it allows. In this case, you can purchase a charger with greater charging capacity. In general, chargers are rated by output voltage and amperage. Be sure that you purchase a charger with the correct voltage output. Check your owners manual for this information. Next, select the charge amperage rating that suits your needs. The greater the "Amps" rating, the faster the charge will be completed. However, there is a limit to the charger size (capacity in Amps) you can use with a given battery. You should determine the "Amp/Hour" rating of your battery, then choose a charger with about 1/3 or less of this value. Example: In most Currie scooters the battery set is rated 24 volts @ 10Amp/Hours. The highest capacity charger I would recommend in this case is a 24 volt, 3A unit.



5) Will "fast charging" my batteries reduce their useful life? 

 Probably. However, the amount of life expectancy reduction can be minimized by using the fast charger sparingly. That is, use it only when a "quick" turn-around is essential. Use the standard low capacity charger at all other times. Example: Charley rides his scooter to work every morning, then uses it to ride to the local park to eat lunch. He doesn't use his scooter after he gets home from work in the afternoon. Recommendation: Get a 3A-5A charger and leave it a work. Use the standard "slow" charger to recharge the scooter overnight. After getting to work, plug in the high rate charger, and the scoot will be ready for lunch break. Use it again after lunch, and it's ready for the ride home.



6) What is a "smart" charger?

 Well....There is "smart", and "smarter" when it comes to chargers. The term "smart" generally refers to the charger's ability to sense the condition of the battery, and adjust its charging output accordingly. By "smart" charging your battery this way, the charger maximizes both the longevity and peak power capability of your battery. EVdeals recommends the Soneil line of smart chargers. They provide high rate "constant current" charging with a voltage sensing cut-off, followed by a  "maintenance" charge rate. Soneil chargers are specifically designed for "cyclic" charge applications. 



 7) Can't I just use my lawnmower, automotive, or motorcycle charger?


In most cases this is not a good idea. In the first place, most modern electric scooters and bikes employ a 24 volt battery system. On the other hand, most cars and motorcycles operate on 12 volt systems. These batteries and chargers don't readily mix without circuit modifications! In addition, the chargers used with cars and motorcycles are usually either "bulk" or "trickle" chargers. Neither of these types is suitable for scooter or electric bike applications. I recommend Soneil "smart" chargers for all personal EV applications. 



8) How long do the various chargers take to complete a charge?

The following chart lists the maximum charge times of chargers available through EVdeals, as well as an assortment of scooters and e-bikes. Charge times based on 80% depth of discharge.

                                  (charge times are in hours)

  Zap mini Stock 1.5A (12V) Soneil 1205 (12V) Soneil 1206 (12V) Soneil 1212 (12V) Currie  Stock 2A (24V) Soneil 2404 (24V) Soneil 2408S (24V) Soneil 2408CAA (24V) Soneil 2412 (24V)    
Scoot-e na na na na 5.5 3.5 1.7 1.3 .75    
Phat-e na na na na 5.5 3.5 1.7 1.3 .75    
Phantom na na na na 5.5 3.5 1.7 1.3 .75    
Flyer na na na na 5.5 3.5 1.7 1.3 .75    
Flyer with EVdeals Hawker pack na na na na 8.0 5.0 2.0 1.6 1.0    
Hot Scoot na na na na 9.0 5.0 2.6 2.1 1.2    
Hot Scoot long range na na na na 11.0 6.5 3.3 2.6 1.6    
Zappy 11.7 6.0 5.5 3.0 na na na na na    
USPD na na na na 6.5 4.0 2.0 1.6 .9    
Zap SX 11.7 6.0 5.5 3.0 na na na na na    
Zap DX 11.7 6.0 5.5 3.0 na na na na na    
Currie extender pack na na na na 5.5 3.5 1.7 1.3 .75    
F-18 na na na na 5.5 3.5 1.7 1.3 .75    


 9) What is battery "memory"?

Battery "memory" is a term used to describe the deleterious effect of
repeated "partial" discharge and re-charge of certain kinds of batteries.
Generally, this "memory" effect has been associated with Nickel Cadmium
batteries and results in a reduced life span.

The lead-acid batteries used in most electric scooters are not effected by repeated
partial discharge and re-charge. In fact, the battery's useful life is actually
prolonged by immediate and thorough charging after every use, regardless of
depth of discharge.

I'm still not sure what charger I need. Where can I get more information?

If you call or e-mail me, I will be happy to answer any questions you may still have about the care and maintenance of your batteries.  ( 508-695-3717)