I suppose that most manufacturers will exaggerate the mileage capability of their bikes by giving figures for tests done on the flat, and on the lowest power setting!
The 28 A/hour battery in this bike, should, however, make a vast difference to my journey home from work.
This is only around 7and a half miles, but begins with a one mile climb of around 1 in 5, followed by a flat mile, which is then followed by a 1 in 4 half mile climb. Then I have a bit of respite with a downhill mile and a half, which is then followed by a long one in 6 climb of a mile and a half with a short 1 in 5 near the top of it. There is then a short almost flat half mile before the last, and worst hill of the journey which is a mile and a half of torture. This one starts of at 1 in 5, gets steeper after about half a mile to 1 in 4 for about 1/4 mile, turns round a very sharp bend and gets even steeper to around 1 in 3 for 1/4 mile, and then flattens out for the last half mile to my house, ... phew!
The battery on my one year old Wisper 905 se sports can do this, but just, as it is really flagging to get up the last hill, and down to the last light, (range quoted for this bike 56 miles), which proves my first point about claimed mileages, they should come and test their bikes on this journey! This is why I would like more A/hours, not so much for extra miles, but the bikes stamina to have more power left for the last hill! My work is fairly physical, and the journey home is becoming a bit difficult at the end of a hard day as I get older. I will need to see if I can try out one of these bikes up some steep hills to see how they perform before committing to spend £2,000 on one. Thanks for all your input!