This is an old offer from Thursday 11th still loads of stock in my local store. A cracking little maintenance charger for 13.99. I use one intermittently and have had it for about 6 months. The viewing angle on the lcd isn't that great, but it is back lit. The voltage readout is also handy even if it does seem to under read a bit prior to starting a charge mode. https://www.lidl.co.uk/en/Non-Food-Offers.htm?articleId=9575
I checked the under read the other day it seems to be 0.1-0.2V on mine so 12.2V equates to the amber light on the Ctek indicators traffic light display: Charging advised 12.4V.