Anker MagGo Magsafe Charger, Power Bank 6,600mAh 15W $59.99 @ AnkerDirect AU via Amazon AU

Lowest I’ve found here was $75.
Same price on https://www.anker.com/au, but shipping may be not free.

Model Number: A1643.
ASIN: B0C9DCTZW2
Product link: https://www.anker.com/au/products/a1643-maggo-6600mah-qi2-po…

Should I get it if I already have:
– Xiaomi 50W 20,000mah
– INUI 22.5W 10,000mah with display
– INUI 15W (5V/3A) 10,000mah without display

Please help.