E EGOWAY 27000mAh PD Portable Charger USB C Power Bank for Smart Phones, Tablets, USB C Laptops and Other Smart Devices-Supports 100W Output

I used Satechi and Klein Tools USB PD power meters to test this item. It will output over 90W as claimed (to a 2019 16" MacBook Pro) but will only charge at a maximum rate of about 60W (from the Apple 96W AC adapter). It may contain a 99.9 Wh battery, but it will only deliver about 60 Wh (at a 10-hour rate) to 80 Wh (at a 1-hour rate) of that theoretical capacity to the load, wasting the difference in the internal voltage conversion electronics. And beware of fast charge/discharge: this battery gets painfully hot! I measured a surface temperature of 52 C with the battery sitting on a hard table in free air. I strongly advise you to NOT leave it inside a pocket or bag while charging or discharging it to reduce the risk of burning your skin or damaging other items.

Reliably delivers 100w for the entire 100wh capacity. It also came with a USB A to USB Micro B and a USB C to USB C 100w cable as well as a carrying pouch. 10/10 would buy again.

Update:Mary from customer service was very helpful and they sent another item as a replacement. 2 Stars for Customer Support.However, I'm still disappointed that the output is only 65W when the product description stated 100W. It does power my MacBook Pro 2019, but I'm not sure about how much mAh there actually is and whether it fully charge my MacBook Pro multiple times as expected.-----1) The battery was sent in a nondescript white box with no logo/branding.2) All of the USB connectors and the power button are missing3) You can see a black pouch through the USB connector holes. I thought it was some cover/sponge. I almost poked it trying to remove it, but it turns out it's the battery or it might be sand. Who knows. Perhaps the Chinese factory ripped them off by filling empty/fake cases with sand.Sending back to Amazon for refund.

The description says it supports 100W output.The welcome guide indicates it supports 65W output max. My computer detects it as 65W, not 100W.The description is a lie.If you need 100W output, do not buy this.If you only need 65W output, don't buy this. Buy one that costs 1/2 as much and truthfully describes their product. There are plenty of them out there.

Really gig with lots of power, but didn’t consistently connect.

Good and portable

Poor battery life, doesn’t charge at the wattage stated, worked ok for about 3 months…

Love this power brick! Charges our iPhone and iPads quickly, and holds a lot of charge. Really nice that it can charge two devices at once. Not too heavy.