Take your point Soundwave, maybe I should change my focus. In the past I've done a lot of long distance events, 150 miles on a sunday on a conventional bike was a regular thing, but now ime a lot older I,m not involved in those events anymore. I,m more of a leisure cyclist now and thought of a 24 hour ride seems less attractive now. I do like to cover a decent distance over a day though, maybe 100 miles in favourable conditions, and depending on the route and available charging points this can be difficult. I now have 2 batteries with a total of 900 watt hours available, but will still probably have to plan properly as repeating stiff climbs can soon eat into the range. So do I need to rethink the type of cycling I do as ime now three score plus one in age? I've seen lots of old club men struggle as they've got older but carry on battling against the miles. The obvious answer is if you enjoy it, do it! But if it becomes a chore, maybe re-evaluate and take a different tact. However, that subject is for a different thread. The battery and recharging issues is prominent for touring and perhaps less so for MTB ers who can be fairly sure a trail can be completed easily on a full charge. But as pointed out, a fast recharge is not recommended if you want to look after your battery.