Well I popped out at lunch and picked this maintenance charger up at my local Lidl for £12.99. So a quick review in case others think it worthy of purchase. First off, It doesnt come with fly leads for more permanent connections like the more expensive maintenance chargers do but I'm sure I can make these up myself for next to nothing. The unit seems well built and despite its awful sounding brand name is manufactured in Germany by http://www.kompernass.com/pages/index.php?lang=en and has full TUV accreditations which is reassuring. The manual is written in perfect English and the device seems to be fully automatic other than having to select 12v or 6V, car or motorcycle. Charging/recovery and maintenance modes get selected automatically according to the state of the battery. All in all, it would appear to be a bit of a bargain but I suspect I'll only know this for sure after its been used for a few months.