BaseusPower Bank, 20000mAh 100W PD Fast Charging Portable Charger with Digital Display, Blade HD Laptop Battery Bank for ROG Ally, Steam Deck, MacBook, iPad, iPhone, Samsung (Matte Black)

This is 60w (possibly 65w) in/charging the battery, and 100w out/powering whatever is plugged in.Wanted to point that out first. Also, double check whatever numbers I, or anyone on the Internet, provide, because in my case I'm not re reading any documentation or retesting or anything and it's all off the top of my head so I may be misremembering. I'm only writing this review because this battery came in super handy and I was surprised I hadn't already written a review of this given how hard core I Stan for it among my friends (or really anyone who would listen). Also I'm on my phone so forgive Auto corrupt.I'll also hit a few other negatives at the beginning:This will not likely maintain 100w for long. YouTube reviews highlight this. However, this is not packaged as a long-term-storage marine battery. This is a "I'll quickly top off one device or watch a movie while I charge everything" type device. I can power my Legion Go with passthrough charging playing console-type games - and I own two of these batteries, so I can passthrough twice - and I would guess that's about 50w in and out at the same time.Weirdness with devices not receiving charge: sometimes plug-in-order batteries. Sometimes it's a particular combination of devices, but be warned that sometimes devices may not charge at the rate you may desire and expect without testing. This battery is absolutely capable of 100w out/60+w in, for various definitions of those terms. I'd guess, at best, you'll get 100w across all 4 ports, something close or matching when 2-3 ports, and then whichever power cap is there for each port when used individually (30w usb-a, 60w usb-c2, 100w usb-c-2, or something along those lines).Some good things:The form factor. It's like two high-end 10kmah batteries side by side, but smaller than a pair of all but the smallest 10kmahs. The rubber (or silicone, maybe?) feet make this much more practical on table tops as it doesn't slide everywhere when leverage on cables plugged into it changes. It will easily move, as it's so light, but the feet make it less annoying. The form factor is perfect for carrying two of these, a low profile mkb, and a laptop in an accordion-style messenger bag (laptop in its pouch, batteries on bottom of other pocket, mkb horizontal across two batteries). The point is that this, being equivalent to 1/4 of a laptop (were you to pizza-cutter a laptop into 4 equal sizes), fits in easily among other tech or bags designed around laptops, but being half the length and width can fit even more places.It has both 2x usb-a - for charging other people's stuff or that thing you haven't yet upgraded - and 2x usb-c - one alone will do 100w, the other tops out lower, with one or the other getting more power as other ports are being used and power being requested by devices.The weight. It's light, but feels like more than a toy. With soft cables, or even medium, and the get underneath it will hold its position on a desk or table top. But I would rather carry two of these than any combination of other devices to get 40kmah (or 3 and 60kmah, etc).The battery chemistry - these are sodium batteries! Super cool! I treat these things worse in terms of heat/load/charging than any tech in my life besides the poor battery in my broken car. I have zero complaints. I don't expect to need to for a while given the last year+, but I would buy more of these.The screen - definitely handy to see status at a glance, though it takes some fiddling to be sure of what is being displayed - port 1-4? Input or output? In the the end, if not everything is charging the way I like I just charge them in order of decreasing input (laptop then tablet then phone, etc), one at a time.There is a low voltage mode if long pressed (3 or 5 seconds or so). Ignore this if you don't understand the importance, but if you have issues charging legacy devices or things like smart watches, give it a try.The old version of the blade (also 100w, but lithium batteries and slightly bigger and heavier) compared better on YouTube - it's a better-understood chemistry, so if you want the best performance in a similar but bigger package I would look in that direction. These new blades are the newest hotness, lighter with similar sprint but worse marathon characteristics (in terms of power transfer per session) but fantastic endurance of poor conditions (I'll charge and discharge them while they're still in their leather pouches, in sunlight, whatever, they just seem a lot less scary than lithium to me). Be safe, whatever you do.

Great slim battery. I put it in the pack and when I plug anything into it from the other side of a cable, it just works. There are a lot of batteries that require a button press which makes tucking a way a battery lose it's convenience. Charges quickly. Hope this helps.

I first come across this brand on their USB-C led power cord. So i decide to give this a try. I've been using the Baseus 20000mAh 100W Power Bank for a few weeks now, and it's hands-down one of the best portable chargers I’ve owned.Pros:Incredible Power Output: The 100W PD fast charging is no joke. It charges my MacBook and LeGo faster then their original wall charger. IF this can charge up 90w on Lego then it will definitely keeps up with the ROG Ally without breaking a sweat.Large Capacity: With 20000mAh, I can get multiple full charges for my phone or one full charge for a LeGo and still have juice left over. Great for travel or long work days.Smart Digital Display: The digital power readout is a nice touch—no more guessing how much battery is left. Super useful when planning your charge cycles.Sleek Design: The matte black finish looks premium and the slim Blade design fits well in my bag without adding bulk.Wide Compatibility: Works flawlessly with my iPad, iPhone, Samsung phone, and all my USB-C devices.Cons:A bit on the heavier side, but totally expected given the capacity and output. Not really a downside—just worth noting if you’re looking for something ultra-compact.Bottom Line: If you need a reliable, high-capacity power bank that can handle everything from phones to gaming handhelds and laptops, this Baseus model is absolutely worth it. It’s become a staple in my tech bag.Here is a photo of previous and new model. Newer version is smaller.