I found this while looking for a Powerbank. Great Deal, $29 as opposed to over $50 in other stores-
Available in multiple colours. 15, 000 mAh version costs $39
This one is 20,000mAH for $29 at Kogan, ordered it and it works well: https://www.kogan.com/au/buy/kogan-20000mah-18w-textured-pow…
have you used this one?
+Delivery costs though = $40+
i got two of these from an ebay sale for $30 total…
This looks exactly the same as a generic one you can get from the Reject Shop (10,000mah) for $20…
Cygnett uses much higher quality batteries than the others mentioned in comments. More mAH doesn't mean it is better. A 15000mAH quality pack would last much longer (in its overall life) than a 40000mAH Chinese battery pack.
Xiaomi power banks ftw always! Shopro always has decent prices too… https://www.shopro.com.au