I had to buy a power supply for my pedalboard, without paying a lot but without having noise in the sound chain.
I was surprised by this power supply, it does not introduce any noise, in my case, using 3 boss pedals, 1 valve distorsion pedal, boost and compressor. It is small enough to fit under my rockboard.
The battery was a nice to have feature but, in the end, it turned out to be incredibly useful. I don't need to connect it to power while playing, it runs for hours without recharging, I didn't measure it but I can play 2-3 times for about 2 hours without recharging.
I'll update the review in case of problems.
Quick delivery and good packaging.