I use small block area in large numbers - a dozen - and since stopped making Uniross alim, I was looking for an equivalent (low) space, technology (switching power supply, Filtered & regulated) capable to charge a fairly high current (> or = 1 A) and set between 3 and 12 V After a thorough research on the Net, I hardly found this model to meet my specifications.
Two small personal regrets: the lack of proper functioning of LED as well as a jack for my smallest transistor Sony (1.5 mm), the smallest supplied by 2 mm in diameter.