I get the Peukert Effect
Electricity is a byproduct of the chemical reaction which goes on inside of a battery.
If I go as fast as I can I use about 15 amps and go about 30 Km/hour but I can only travel about 4 kilometers. If I maintain a steady current of about 5 amps I travel about 20 km per hour and I can go 22 kilometers.
My battery pack was pretty dead and it took .26 KWH to charge it.
KWH = (AH x Volts) / 1000
So therefore .26 = (10.8333 x 24) /1000
I am satisfied that my 24 volt 12 AH SLA battery pack is working properly.
But it does bring up another issue that causes me great dissatisfaction. The temperature here was 2 degrees above freezing today and my weaker battery pack gave out substantially sooner than expected. I knew that lead acid batteries lose their power faster in the cold, I have read that NiMh batteries do the same and I've seen here on this site today that the Lion batteries are also subject to this flaw.
That leaves NiCad's as the only option for sub-zero temperatures.
It's going to snow within the next couple of weeks here where I live and I'll have to put the studded snow tires on my e-bicycle.
PS I would be really surprised if other battery technologies did not suffer from the Peukert Effect also.