Say goodbye to cumbersome bricks. The Nano MagGo Slim is among the thinnest, strongest energy banks I’ve seen all yr!
Every so often, it occurs. I get up to seek out my cellphone barely hanging on at 2% as a result of I forgot to cost it, or the charger fell out of the socket in a single day. On days like these, I’m scrambling for energy all day lengthy and stressing out (as a result of mothers’ telephones want to remain at 100%, no excuses). That’s why I used to be curious to strive the Anker Nano Energy Financial institution (5K MagGo Slim) when a evaluate pattern got here my means. On this hands-on Anker Nano Energy Financial institution evaluate, I’ll share what it’s actually like to make use of at house, at work, and on the go.
Anker Nano Energy Financial institution Evaluate: First Impressions

The Anker 5K Slim got here in a large, flat field that was so gentle, I assumed there will need to have been a mix-up. A cellphone case, possibly, however actually not an influence financial institution. I
Inside, the facility financial institution revealed itself: simply 0.34 inches thick, slimmer than my smartphone, and roughly the dimensions of a bank card. Regardless of the tiny type issue, it doesn’t really feel fragile—extra like an ultra-thin exterior arduous drive.
The construct high quality impressed me instantly. The matte end feels easy and premium, virtually like velvet, and the gadget is simple to grip. There’s a USB-C port, an influence button, and a 4-LED battery indicator, all neatly built-in with out including bulk.
For somebody like me who’s consistently on the go (faculty drop-offs, ballet classes, observe follow, the entire household shebang), a slim, light-weight charger like that is excellent.
Anker Nano Energy Financial institution Evaluate: Charging Efficiency

Regardless of its compact dimension, the Anker 5K Slim has spectacular charging efficiency. With a 5,000 mAh capability, it’s nice for topping up a smartphone throughout the day.
In my assessments with a Samsung Galaxy S23:
- 60% → 80% took about half-hour
- 60% → 100% took roughly 1 hour
These outcomes are wonderful for such a skinny gadget. The charger helps Qi2 wi-fi charging at as much as 15W and is MagSafe suitable, making wi-fi top-ups fast and handy. It additionally helps 20W USB-C wired charging, which is helpful if you happen to choose cables.
When charging the facility financial institution itself from 0%, it takes round 1.5 hours to succeed in full capability utilizing a 20W charger. The graphene cooling expertise and twin NTC chips maintain the gadget at a snug temperature.
Anker Nano Energy Financial institution Evaluate: On a regular basis Use

After 3 days of hands-on testing, I discovered the Anker 5K Slim a delight. It costs my cellphone rapidly at my desk and actually turns out to be useful on these days when, for no matter motive, my cellphone didn’t cost in a single day.
At some point, I left house with solely 30% battery on my cellphone. I connected the Anker 5K MagGo Slim and arrived at father or mother/instructor night time with 80% battery. It felt like a magic wand: light-weight in my bag, practically invisible, however highly effective sufficient to avoid wasting my night.
And, sure, it’s fashionable. A number of mother and father observed it in my bag and couldn’t consider such a slim energy financial institution exists. Who knew chargers may get compliments?
Anker Nano Energy Financial institution Evaluate: Who That is For

The Anker 5K Slim isn’t designed for long-haul adventures or prolonged off-grid use. Should you want a battery to final a number of days with out shops, you’ll need one thing within the 10,000–20,000 mAh vary.
That mentioned, it’s excellent for:
- Metropolis vacationers & commuters: slim, fashionable, and simple to hold
- College students: pocket-friendly dimension and cable-free wi-fi charging retains telephones powered by means of courses and research classes
- Content material creators: vloggers and social media followers can movie and publish with out worrying about battery
- Day trippers: excellent for a full time out when shops are scarce
Mainly, in order for you a light-weight, dependable, and stylish every day energy enhance, the 5K MagGo Slim has you lined.
Anker Nano Energy Financial institution Evaluate: Value and Availability
The Anker 5K Slim is broadly out there now, each by way of official channels and retailers, although its worth locations it towards the premium finish of magnetic 5,000 mAh energy banks. On Amazon, it’s presently $45.99 (16% off from $54.99).
Related merchandise are cheaper and dearer. So, so far as worth goes, I’m gonna name it mid-range. And with the present Amazon low cost, you save much more!
Ultimate Ideas
I like that the Anker Nano Energy Financial institution (5K MagGo Slim) balances portability, efficiency, and magnificence. It’s like few different chargers, in that respect. If you would like an extremely compact energy financial institution that has your again throughout on a regular basis life, I can’t consider a greater companion. Actually. I’ve seen numerous energy banks, and this one is nearly the most effective for each day use.
So, if you happen to want a discreet, dependable enhance throughout the day and don’t need to lug round a brick, this little charger delivers. Mid-range in worth, it’s undoubtedly a contender for my favourite energy banks of 2025!