The Mission 529i is an isolated guitar pedalboard power supply with 8 x 9V outputs, 1 x 5V USB output, and an internal rechargeable Li-Ion battery.
The 529i can power a typical pedalboard for 4 - 5 hours on a single charge, and be recharged with the supplied charger or from a USB power source. The USB output can be used to charge a phone or small USB powered device.
The 529i is very convenient for grab and go fly rigs, and does not need to be connected to wall power and all outputs are isolated, it's also one of the quietest power supplies available.
In this video we unbox a 529i and take a brief look at some of its features and uses.
Links
https://missionengineering.com/shop-2/products/power/529i/
https://missionengineering.com/go-rechargeable/