Pretty heavy but its a long lasting battery

Brilliant no problem what so ever

Definitely extends play time for the steam deck. Charges quickly and good for traveling. It does significantly add some weight to the deck and takes some getting used to. The most disappointing thing to the battery is you have to remove your protective case in order to use it.

Honestly, I didn't know what a Steam Deck was until I ordered this power bank. I wanted to have a large power bank in case of power outages so I wouldn't have to worry about recharging devices.
This power bank is 20,000mAh, which will charge my phone about three times. I use a USB 4.0, which charges my phone at super-fast speed. I can also use it to charge my Dell laptop.
It's a large power bank, just a bit smaller than my Galaxy S21 Plus, and it has some good weight to it. The LED lights indicate how much charge it has left. There is just one USB-C port for power in and power out, although you can connect a hub and charge more than one device at a time.
I really like that it's so portable and I can take it anywhere, especially when I sit outside on the porch. When it's not in use, I plug it back in so it stays full for an emergency. It has overcharge, over-discharge, short circuit, overcurrent, and a chip that identifies and adjusts to what you're charging so you don't have to worry about anything.

I like the look, the power and the overall *feel* of this product. It's compact to bring it with you to places but also to charge some power heavy devices (Switch... and I'm going to test it on my chrome book as well.)
So far it's worth every penny. It's really good.

My boyfriend got a Steam Deck last year and one of the main issues we've had is battery life. If it's not constantly plugged in it only seems to last an hour or so, which makes it hard to play on the go. This has helped quite immensely. It gives us a few more hours of play time while we're on the go and we can have it charging while we play. It comes with a clip to attach it to the back of the deck, but the main downside to that is that the battery is quite hefty and makes the deck heavier with it attached. Not as big of a deal though if you set it down and use a separate controller though. You can also get a much longer cord to attach it if you don't want it clipped on as the one provided is too short not to. But overall it's great to have a battery big enough to let us play the steam deck while we're traveling.

I love this charger so much it hold so much juice/charge and it'll keep my devices charged all day long.
Pros: long battery life, sturdy, fast charging cable, c-type cable to fit a wide range of devices
Cons: heavy, bulky, the clip to hold it on to the device only works for steam deck
All and all its a great charger
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This power bank has been a godsend. I had to travel a good bit lately and when on flights this actually made it so I could go a whole flight and use my Deck like it was a proper portable system playing elden ring and monster hunter. it is weighty but not awful. the closest thing to a gripe I could have is it takes forever to charge with anything other than the deck charger. a must for Deck owners who travel.