Cheers for the responses, I like the sound of the LiFeP04 and don't understand why more manufacturers don't use them, they must have some downsides? I do like the Kudos tourer as it's my style of ride, but as footpump mentions, I'm a little worried about the V brakes, being a large unit I take some stopping once I get going, especially down hill. Though I never had a problem on my old style racer in the 80's. Any thoughts on them?
Kudos made the decision of using LifePo4 on all its bikes,the batteries have very long life,some used in weather stations are now 20 years old. Many Kudos customers have bikes 6 years old and LifePo4 still going strong.
But LifePo4 has a low energy density,in other words it is heavy,the market demanded lighter bikes and therefore we had to change to lighter chemistry with shorter life. I am afraid that the market,especially in the UK,placed more emphasis on bike lightweight than battery life,LifePo4 is still very popular in Holland where heavier bikes are accepted as the norm.
We have always been very fair on our replacement costs of our batteries but don't supply that many replacements. Whatever the chemistry my experience is that owners tend to change their bikes after a few years so battery replacement is not relevant.
KudosDave