The tiniest powerpack, great for H0e/009, TT, N and Z gauge models. (Stayalive)
The SPP Nano connects to practically all DCC decoders. With two wires connected to the plus and minus of the decoder. There is no data cable and the starting charge time can not be controlled. This is not necessary, as the supercaps are charged slower than with the SPP and SPP-N. Soldering is required with these!
Assembly required. Instructions can be found here
Add an optional HM7000 plug for £2