The unit mAh is also known as a milliamp hour, and it refers to the charging capacity of a power bank.

Baseus Adaman 65W 20,000mAh QC Power bank Review – MBReviews Baseus Adaman 65W 20,000mAh QC Power bank Review – MBReviews

Since I don’t plan on upgrading my laptop anytime soon, I imagine this Baseus power bank will have to play a bigger role over the next months — maybe even year or two. As a test, I decided to connect the Pixel 2 XL which has a 3520mAh battery and, charging it from 0 to 100% using the USB-C port took away about 23% from the power-bank’s battery, so I could charge up the phone about four times – it’s in line with the 12,000mAh rated capacity. I could charge my Pixelbook twice a day and keep working for several hours in a row, uninterrupted, and without scouring for a free outlet every five minutes. You can't go wrong with any of them, but I'd be leaning more toward the Anker 747 as my favorite pick. hours to fully recharge the battery, so if you plug it in shortly before you go to sleep, it'll be ready in the morning.Even though the Baseus Adaman 65W advertises 20,000mAh, the rated capacity is somewhere around 12,000mAh at 5V/5A – a loss of up to a third of capacity is usually expected from most, if not all power banks. Please make sure that your notebook charging port is Type-C and it has the charging function, If you need to charge the notebook. When used as a means of gaining energy from an external source, the maximum wattage output may be higher than when it is used as a power bank on its own. Considering it's not much bigger than a smartphone, the Anker PowerCore+ is slim and small enough to slip right into your pocket.

Power Banks | Baseus Official Fast Charging Power Banks | Baseus Official

If the name hasn't given it away already, the Krisdonia AC Power Bank has a massive maximum battery capacity of 60000mAh. The 65W Baseus Adaman is an improved version of the 20,000mAh (lithium polymer) power bank that the manufacturer has made available a year ago which supported quick charging up to 22.

Rather than opt for a smooth, featureless exterior, the Anker PowerCore III Elite has a nice textured surface, making it much easier to grip and prevent accidental drops. It packs a 6,000mAh battery inside, which is bigger than the one you get inside Apple's official MagSafe battery pack.

Power Banks for Steam Deck 2023 - MUO Best Power Banks for Steam Deck 2023 - MUO

These power banks utilize a higher voltage and essentially increase the number of watts being pumped into your device to charge it up more quickly than average. To recharge the power bank, I used a Huwder 150W charger and it managed to push it from 0 to 100% in a bit more than a couple of hours. Lastly, I checked the connection with the USB-C port using the Pixel 2 XL and the voltage went up to a stable 9V, while the average amperage was 1. That means we’re looking at approximately 14,000mAh of real capacity — 70% of the 20,000mAh Baseus claims. Mark is a graduate in Computer Science, having gathered valuable experience over the years working in IT as a programmer.This USB C Power Bank support discharge while charging, but if output is higher than input, the power bank will activate the auto switch-off protection to protect itself. So, if you used a dual 45W power bank, you might expect the energy output to reach up to 45W when used as a charging station from an external source and up to 30W when used as a standalone power bank.