Used this power bank to run my Starlink Mini satellite internet dish. Fully charged it ran the Mini for just over 6 hrs 30 minutes. Thats 30 minutes longer than another 40,000mah power bank I own, so the capacity of the Romoss is likely not overstated. Like a good lithium battery should, it ran at voltage and amperage acceptable to the power hungry dish right up to 0% before it quit. Nice. It recharged in 2 hrs 48 minutes from a 100 watt GAN wall charger and 100 watt cable, so it had full opportunity to recharge at its rated 65 watts. I haven't done the math but it feels like that's pretty good for such a big power bank. The charger was pretty warm! But that's expected.It has a Lightning recharging port (as well as a USB C charge/recharging port). I've never seen that before and think the choice is weird - would've liked a second USB C port instead.Overall I really like this power bank and I think for the price it's pretty hard to beat.The only thing that's a little misleading is a description on the side of the box that says Bidirectional fast charging. It is certainly true you can fast charge FROM IT to devices, and fast charge TO IT from a wall outlet recharging plug, but you CANNOT DO BOTH SIMULTANEOUSLY. I tried this and it immediately switched off the device charging from it and began instead taking the recharge current. Honestly that's really an Uninterruptible Power Supply (UPS) function that I would only expect from a larger power bank like a Sherpa. So it's not a hit on the Romoss, but a clarification.