The tradeoff with batteries has always been one of weight vs. range. Batteries with less cells tend to be lighter and less expensive, so they’re generally the way to go, unless you want to travel longer distances. German manufacturer Kalkhoff has kept this in mind with its new line of ebikes, which was presented at this year’s show. The bicycles are available with your choice of an 8, 12 or 18 amp-hour battery. Riders who just use their bike for popping up to the store could go with the 8, while more serious riders could get up to 140 kilometers (87 miles) out of the 18.
Giant bicycles is employing a similar strategy with its 2011 Twist ebike. Instead of swapping batteries, however, the rider can add a second one, to extend their range up to 160 kilometers. This figure has, not surprisingly, been disputed in at least one review.
User Comments (8)
Range UP TO 140km with an 18AH battery is NOT real world range.
As their website says it depends on how much one pedal assists, optimal wind conditions, no stop and start, the right outside temperature (up to 30% less range in cold weather...), flat terrain, the bike being in perfect technical condition, the battery being new etc.
Of course the range could be said to be 1000km IF you carry enough batteries.
Also the voltage of the battery is not given by Kalkhoff on their website so one can not roughly work out the range oneself.
Study the subject before buying an electric vehicle, see i.e. 'Endless Sphere Forum' for info.
I myself don't believe in electric vehicles for many reasons ( Misplaced ideology and dubious claims...see my blog for more info) and build my self a motorized bicycle that has no problem with range. bikemoto.wordpress.com
- September 22, 2010 @ 05:09 pm CDT