For the longest time, I refused to upgrade my work-issued MacBook. I was leery of the hassle, and would much rather hang on to an aging Intel-powered laptop than have to transfer files, set up apps and sign in to accounts all over again. What did it matter if my notebook barely lasted long enough to cover an iPhone launch? My petty brain blamed it all on external factors (like being forced to use a MacBook instead of a PC), and left me dripping in stress as I watched the power levels dip down to zero at many of the live events I attend every year.

So when I saw the Anker Laptop Power Bank was one of the items in our Labor Day deals roundup this year, I decided to get one to alleviate my battery anxiety (instead of, you know, doing the sane thing and agreeing to a new laptop).

When I unboxed my new Laptop Power Bank the night before the iPhone 17 Pro launch , I wasn’t expecting to be so taken by its features. All I knew before then was that this was a solid, beefy laptop battery pack, squeezing 25,000mAh in a compact package that would save me from having to worry too much about finding an outlet. But when I saw the screen light up with details on the amount of energy left (to two decimal places!) and the real-time charge data when I plugged it in, I was impressed.

How modern! Then I noticed the built-in cables — one retractable and neatly tucked inside the charger and the other artfully curved into a groove and doubling as a handle. Both wires were braided and felt like they’d be resistant to fraying and destroying themselves over time. Altogether, the general build quality and functionality of all the components made it clear this was a thoughtfully designed product worthy of all the praise and money we’ve hurled at it since my colleagues first tested it.

But what truly made me smile (and giggle, honestly) was a naughty little Easter egg . I saw posts on Threads indicating that if you tugged on that retractable cable and let it go in and out a few times, the screen would show a smiley face. I didn’t believe this was true until I saw it for myself. Sure, it felt a little bit odd, but I told myself I was revving a chainsaw, and doing legitimate testing for professional reasons, not jerking off a device.

And when I saw the funny face appear, I felt the effect was humorous rather than pervy. The good news for the more staid readers is that if you don’t want to ever see that face, you never have to. And if you like cheeky little touches in your tech products, the Anker Laptop Battery Charger will delight. Regardless of how I felt about having pleasured a laptop battery charger, it doesn’t take away from the fact that this is a well-made, well-rounded product.

It managed to get my MacBook a few extra hours, so I made it all the way to the end of a multi-hour keynote, though it did run completely empty so I couldn’t recharge my phone after. Blast Apple Park and its utter lack of available power outlets! Anker’s Laptop Battery Pack effectively allayed my battery anxiety, brought me some mirth and won me over with its thoughtful design. And because I got it on sale, it was $90 well spent.

This article originally appeared on Engadget at