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.

The unit works great. It charged my power hungry laptop while I was working on it and all my other smaller devices as fast as the wall chargers. It is bigger than it looks in the pictures and it is heavy. This is not a pocket power source. Pay attention to the dimensions if you plan to take this along in a computer bag or carry on. I would recommend this because of its performance but suggest checking with any airline before trying to put it in checked bags.

This is a big boy, i have this new 40,000mah power bank and it is replacing a 30,000mah power bank by a different manufacturer. This 40,000mah is significantly larger and heavier, and gives me only about 1 more hour of runtime on a Legion GO gaming.So in comparison my old 30,000mah one gives me 3 1/2 hours on a Legion GO gaming, and this 40,000mah one gives me 4 1/2 hours gaming on the same Legion GO playing the same game.To be honest, i was hoping for a bit more given the size increase.I don't have an accurate charging spec on it but within 3 hours it goes from empty to full on a 65 watt power charger. Charging time will depend on the type of charger you are using, it does not come with one but it does come with a USBC to USBC Cable. A short one.Build quality seems solid, it's a nice looking brick. The LCD is bright and easy to read. When it gets below 10% the LCD screen will start to blink to let you know it's just about out of power.It never felt warm at all from powering my Legion GO for 4 1/2 hours, or getting charged back up to 100% after so it seems safe.So good power bank, wish it would have gotten to 5 hours but 4 1/2 is pretty good. Just the extra size and weight for that extra hour compared to my 30,000 unit, i don't know it's significant for not a lot of extra power.

Excellent product, I really liked the battery charge, it really lasts a long time, the battery lasts up to two days straight for charging

I bought this power bank about 8 years ago for my charging needs and just had to replace it. While not as light as some of the smaller/sleeker designs, it has met every challenge I've thrown at it. This power bank's durability, capacity and design have been unmatched so far. From charging devices in a PVC conduit manufacturing facility, to backwoods hikes, this bank can charge my GoPro and phone several times over in a single week. The newer banks come with a type C charging cord which is quite helpful these days considering most electronics now do not come with cords. A charge from zero to full will take atleast 8hrs initially, keep this in mind if you're planning on going out. I highly recommend giving this device a try.

Worst!

Holds charge for a long time. It is pretty big and bulky.

This batter pack is awesome! Charges multiple devices simultaneously. Packs a 65w output for laptops and a 40000 mah capacity that will last for days. Super durable housing and an easy to read lcd screen lets you know how much charge is left. Easy no brainer purchase.