ROMOSSPower Bank, 40,000mAh 65W Portable Laptop Charger with USB C Fast Charging, External Battery Pack Compatible with MacBook Pro/Air, Dell XPS, iPad, iPhone 15, Samsung, Tablet, Steam Deck

The build quality feels nice. The usability is easy to understand. Charges my zfold 3 easily with the super fast charging from the USB C port. The unit charges quickly as well. I have a portable USB C screen that I have for on the go and it also easily powers it. The USB c power delivery is really nice. It's a literal brick on weight though, but well worth it from the amount of juice it has. Design is also simple, nothing fancy and fits in my backpack with ease.

I purchased this right in the spring of 2020 and it’s still going strong! It’s literally charging my iPhone right now via usb- C.UPDATE 12/22/2022: I got another one!Amazon won't let me make two reviews, so I am updating my original review. I first purchased this battery bank on 03/09/2020 and now, nearly three years later, I saw that this was on a 40% off sale, so I HAD to jump on that. This battery has been dependable, reliable, consistent, steady, stable, trustworthy, steadfast, unwavering, and...... reliable haha.You can see two years of wear and tear between the two in my attached photos, and I am extremely pleased with this brand and the quality of this battery. I don't even charge my phone from the wall anymore. I just charge this battery and charge my phone from it. Having two now will make that very useful. Just one of these is enough to charge my iPhone 13 Pro Max 9 full times from dead with a little bit of power left, as my phone has a 4,352mAh battery. With the fast charging, I couldn't imagine needing a different one. The 60,000mAh ROMOSS model was very enticing, but this was 40% off so this one is the winner.I'm not at all affiliated with the seller or brand, I just want to share my surprisingly excellent experience with you all. This is the battery bank to have if you want some charging insurance through power outages or if you, like me, like to play full controller games on your phone (it's call of duty mobile for me) for hours and hour and hours on end and need a portable, convenient power bank. These guys charge at a rate of 18w (9v 2A) via usb C and at 10W via micro-USB. I always opt for fast charging, as a battery of this capacity takes quite a while to charge. It takes a solid 8-9 hours to fast charge these from dead to full, and around 13-14 hours if you don't have a USB C charger. They take days of use before they die, though. Now that I have two, that's a problem of the past. Just recently, my IMUTO 30,000mAh power bank stopped charging through its only input, so I'm glad to have found this one on a sale! I paid full price the first time around and I would have done it again too.Anyways, 10/10. Absolutely recommend. I've never had any issues whatsoever with mine in nearly three years. All of the ports still work, the capacity is undoubtedly lower because batteries aren't immortal, but it still keeps a very solid charge after hundreds of charge and discharge cycles. I can still charge my phone and Apple Watch around 8 times each, maybe a little bit less. So don't worry about whether or not it will continue to work for you!I will update this review again if ever necessary.

I needed a power bank for my laptop for when I'm traveling and don't have easy access to an outlet. This worked like a charm and fully charged my laptop from almost dead with power to spare, and charged my phone at the same time! Would definitely purchase again.

Just received the battery and first time charging 3 different devices.Noticed something weird that whenever I start/stop charging a device by plugging/unplugging, all the other devices stop charging for a second, and then starts charging again.Mostly not an issue but I'm using this battery bank to power a computer with no battery so computer shuts off and crashes every time I plug something into this power bank. Kind of annoying.

These two that I just received are in addition to their 30,000 mah that I received a few years ago. These are such a blessing to have so much stored power, until I am situated with amenities!!Romoss has been very dependable, durable and the oldest one is portable, in my mind. The new 40,000 is a bit larget, and the 60,000 is quite large, but I am thrilled to have the additional power into the future.

This is a very sturdy charger and works for my cell phone, tablet, Kindle, and Chromebook.It is simple to use and lasts for about 3 weeks when fully charged.I highly recommend this charger!!!

Came back to review after a year purchase. Had just charged one full cycle and then used for few hours may be. After that, it was never used. After 6 months, it started to bulge out to the extent that it was about to Crack open.Don't buy!

This can easily charge my iPhone pro max maybe 8 times before needing to be recharged. It charges fast and the lcd display adds a nice touch. There are a lot of ports on this and it’s shaped like a small brick. Not sure how durable it is if dropped. Wish it came with a protective carry bag or something to protect it.