I last used mine through the winter 2013/14, having connected them to a 4xAA NiMH battery pack in favour of the lead acid. The following winter I switched to a Philips Saferide 80lux. A hub dynamo powering a B&M Cyo 60lux is now my preferred lighting choice, since Winter 2016/17 the Philips Saferide remains in use as a back up.
Reading back I detect a certain amount of confirmation bias in my review, particularly with regard to beam cut-off.
The Daylites and the NL311s now sit on a shelf gathering dust.
Please be fair and thoughtful in your opinions. No rants please.
Missing, presumed fed.