Thanks for restoring my faith!
Browsing this thread, few pages back, I read of someone stating it.
I have two Pico 75, two Pico 25, and two Pico 21700 which I acquired along the years. One extra 25 I bought later, died prematurely, but I believe it was just one unfortunate occurrence, as the Pico are very reliable.
The Pico 75, is very efficient too, much more than the successive iterations, around 95% or so, and when used for MTL, the battery is truly long lasting.
When the Picos first appeared, the truly good batteries (the likes of VTC5D and the P28A) weren't so commonly available as today.
Now, with a P28A in the Pico 25, I can use a mesh atomiser at 75 W without ending with unreasonably short run times, or without killing the cell prematurely, as was the case at beginning of year 2016.
Good Pico!