Fan noise is a problem on this Jackery 

They put it on sale quite often, so I wouldn't recommend buying it at full price. And for Black Friday (2022), they actually had it for less than $1200 !

Well it is outdated, as this 1500 was the last of the "standard" Jackery's. A 1500 Pro model would be great to see, but I think it's unlikely, as it would probably too many steal sales from both the 1000 and 2000 pro models, as this is kind of the sweet-spot size wise, which i why i still like it. As for how it looks, it does look odd in a lot of photos and videos, due to it's size and shape, combined with people (like me) filming it close up, but it does look better in person. I'll do a design review on this unit soon and explain a bit more.

See Hobotech's review. He uses a decibel meter, and if I remember correctly the Pro model is about 10db quieter! (Its also a deeper more pleasant sound). The 1500 Pro and 2000 Pro are very quiet, the 1000 Pro is a little louder, but will still be much quieter than this old Jackery model. Just curious, when was the Delta 2 too loud for you? The Delta has a variable speed fan, so it's only loud at high wattages. For charging, you can use the app to reduce the charging speed (which is also better for the battery). Slower speeds will have very little fan noise. There is no way to avoid loud fan noise when outputting high loads though.

@@SoGenFan Perfect. The Delta2 was loud at charging, and iIdid use the app to change the setting. However, some of the review I have seen show that once you plug in any substantial equipment to power up the noise kicks in again at around 5-600w output. The noise is unbearable, imagine having a vacuum cleaner on constantly. So I sent it back unfortunately, and will try the Jackery pro models.

Just buy the new Jackery 1500 "Pro" model. It's currently cheaper than this old model, and it has 100w usb ports, a flat top, and it can charge 3 times faster, with redesigned and very quiet fans. 1500 pro video: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-atCQRL5lc2I.html

I have the 1000 plus and it’s loud as well