[flecc]

P.S. I forgot to answer your query on Ah, Alex

It's the initials of Ampere hour, and represents the theoretical number of amps of current that a fully charged battery could issue in one hour, leaving it flat. The higher the number for a given motor, the longer the range.

The number has to be considered in relation to the motor power, higher power motors using more current.

If the ampere hour number is multiplied by the voltage of a battery, that gives the Watt/hour number. For example, that Izip's 12.2 Ah, multiplied by 24 volts is 292.8 Watt/hour. If it's motor consumed an average of 300 watts during a trip, the battery would in theory last almost an hour. The actual range achieved can fall short of the theoretical figure, though the difference is only large with lead acid batteries (SLAs), which, because of their chemical nature, cannot issue all of the charge they contain.
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