If you're searching for a power bank that combines high capacity and powerful output with a sleek, portable design, take a look at this offer from Baseus. Amazon currently has the Baseus Blade 20,000mAh 100W power bank available for $39.99 after applying the coupon code "3M6HOJ2F." This deal mirrors a previous promotion, but it's now open to all shoppers, not limited to Amazon Prime members. While most high-capacity power banks are bulky and rectangular, the Baseus Blade stands out with its remarkably slim profile. It delivers enough power to fast-charge nearly every gaming handheld PC at their maximum speed.

Baseus Blade 20,000mAh 100W Slim Power Bank for $39.99

Baseus Blade 20,000mAh 100W Slim Power Bank

$99.99 save 60% $39.99 at Amazon Use code '3M6HOJ2F'

The Baseus Blade measures a mere 0.7 inches thick, significantly slimmer than most high-capacity power banks, which typically exceed 1 inch in thickness. Iniu achieves a thinner build by adopting a wider, more square-like design, approximately 5" x 5". This form factor makes it an ideal fit for laptop bags or backpack sleeves. It weighs around one pound, which is standard for power banks in this category.

The wider body accommodates four ports: two USB Type-C ports, each supporting 100W Power Delivery, and two USB Type-A ports, each with a 30W output. Keep in mind that the total maximum output is 100W. This means that when all ports are in use simultaneously, the combined output will not exceed 100W, despite the ports' individual ratings adding up to 160W.

The 20,000mAh battery can fully recharge all your gaming handhelds

This Baseus Blade features a substantial 20,000mAh, or 74Whr, battery capacity. Factoring in approximately 80% power efficiency, here’s how many full charges you can expect for various gaming handhelds and iPhones:

Nintendo Switch 2 (18Whr): about 3.3 times Nintendo Switch (16Whr): about 3.7 times Steam Deck (40Whr): about 1.5 times Asus ROG Ally (40Whr): about 1.5 times Asus ROG Ally X (80Whr): about 0.7 times Lenovo Legion Go (50Whr): about 1.2 times Lenovo Legion Go S (55Whr): about 1 time Apple iPhone 16 (14Whr): about 4.2 times Apple iPhone 16 Plus (18Whr): about 3.3 times

The 100W output enables fast charging for nearly all phones and gaming handhelds

The Baseus Blade's USB Type-C ports deliver up to 100W of power output, automatically adjusting to the maximum charging rate supported by the connected device. The Nintendo Switch and Switch 2 have a maximum input of 18W to 30W, the Steam Deck accepts up to 39W, and the Asus ROG Ally can take up to 65W. The Asus ROG Ally X (including the rumored Xbox Ally X) and Lenovo Legion Go S are capable of charging at the full 100W rate.

This power bank is airplane-safe

You can travel with peace of mind, as the 20,000mAh (74Whr) capacity is comfortably under the TSA's carry-on limit of 27,000mAh/100Whr.

For more options, explore our top picks for portable power banks ideal for travel.