apart of the aliexpress 12-anniversary sale
using the code gets 30USD off which I think is a good deal for this model.
bought other models before and was happy with it, seems to be an ozbargain favourite in terms of battery starters.
Specs from Aliexpress:
GOOLOO GP4000 26800mah
✔4000A Peak Current
✔ Powerful and Handy: Jump starts 12V all Gas and 10.0L Diesel Engine
✔Type-C In/Out charge port
✔ Fast charge: Two-Way Fast Charge
✔ Flashlight: LED Flashlight: 3-modes: Solid, Strobe, S.O.S.
✔ 15V/10A multifunction port: It can power other auto devices such as air compressor, car fridge, car vacuum cleaner, and more.
✔ Battery Life: 1000+ Cycles
✔ Standby Time: 3-6 Months. It is recommended to charge every 1-3 months
✔ Charging time:about 7H
Currently $149.99 at amazon and you'll receive it within a week.