If you’ve ever been disappointed by those 5,000mAh MagSafe battery packs that barely get your iPhone to 60%, you’re not alone. In steps, solid-state battery tech. It’s quietly becoming one of the most exciting upgrades for smartphone accessories. It amplifies all the best things of a regular lithium battery and also alleviates all the bad. It is more dense, giving you more power per mAh, it’s way more durable, and offers Qi2 compatibility.
Kuxiu S2
This power bank uses solid-state battery tech, which not only makes it more efficient but also helps it stay cooler and last longer. I’ve tested this one personally, and it’s one of the few 5,000mAh options that can get my iPhone 16 Pro Max from 10% to 100%. Here are the specs you should know:
- 5,000 mAh capacity
- Qi2 certified, so it charges wirelessly at 15W
- 20W wired charging in and out
- Charge iPhone 16 Pro Max from 0 to 100% in 1.5 hours
- Made of aluminum with a frosted glass-like finish
- Weighs 5oz and is .39in thick
- Has a 5W low charging mode to charge AirPods
- Solid state battery tech
What I like about the S2 is that it works consistently. On a recent trip, I used it daily in hot summer conditions, and it never overheated. It gave my iPhone a whole second battery, so I never had to worry about dying. The S2 also nails all the basics you would want out of a MagSafe power bank: it has strong MagSafe alignment, it’s built well, and it has enough power output to justify using it daily.
The deal & availability
The Kuxiu S2 is now on sale for $49 (down from $79.99) on Amazon, no coupon or code needed. It comes in Black or Natural Titanium, and both colors look clean on any iPhone.
If you’ve been let down by MagSafe battery packs in the past, this one is better. At $49, it’s an easy recommendation.
Here’s an except from our original hands-on review:
I recently brought the Kuxiu S2 on a trip to Florida, where it was hot. I used it as my primary charger for 6 days, and it passed with flying colors. The first ‘wow’ moment I had was when it fully charged my iPhone 16 Pro Max from 12% to 100% and still had battery left over. I am not going to say it stayed perfectly cool, but given the conditions it was in, it never got hot, and it would warm up just a tad when it was pushing the 15W of charge, but would quickly come back down to normal temperatures.
Other quality-of-life notes I like are the simple iOS integration it has when it first connects and the insanely strong magnets.
And here’s our hands-on review of some similar models for deeper insight:
Other great magsafe accessories
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