12V DC 6500mah / 9v 8500mah / 5V USB 15000mah, 30W 75Wh, Rechargeable Lithium Ion, Li-ion Portable Battery Pack, Power Bank for CCTV Cameras, LED Strip Lights and more. With UK Plug Charger

Bought this to power a Joyo MA-10B Portable Bass Amp for busking which runs on either 6 x AA batteries or from a 9v negative centre pin guitar pedal type wall-wart power supply which comes with it.This portable power supply has positive centre pin so I also bought a pair of adapter leads (https://www.amazon.co.uk/gp/product/B07YJKJY7C). It all works 100%! So if you are wanting this to power busking gear like pedals go for it. The only thing I can't say yet is how long it'll power the amp at loud volume on the street busking but it's got to last WAY longer than 6 x AA batteries. It'll also power your phone if it gets low via the USB out which is a bonus if you use a phone for backing tracks when you busk. 10/10 !! Super product.

as advertised