FYI: you can currently get a 30000mAh 65w Baseus power bank for £35 on Amazon : r/SteamDeck
Baseus 65W Power Bank 30000mAh PD Quick Charge FCP SCP Powerbank Prenosná externá nabíjačka pre Smartphone Laptop Tablet – kúpiť za nízke ceny v internetovom obchode Joom
Baseus PPLG000101 Amblight Digital Display Powerbanka 30000mAh 65W Black 6932172613600 | E-shop | Hacom.sk
Baseus Amblight Digital Display Powerbank 30000mAh, 65W, biela-
Baseus 65w Pd Power Bank 30000mah | 30000mah Power Bank Laptop - Baseus Power Bank - Aliexpress
Baseus 65W 30000 mAh PD Power Bank - Smart Brands Pakistan
Baseus 65W Amblight 30000mAh Power Bank | Gadget N Music