Have an Anker Astro with 16k mAh capacity.
It's about a couple of years old.
Like the size and weight for the capacity but now it's taking a long time to charge. It's been charging for about 12 hours and only up to 3 bars out of 4.
Seems like it takes longer to charge than it used to.
Do other packs with 15k or greater mAh capacity also take so long to fully charge?