Pros & Cons — The Honest Take

For most iPhone users, the insane portability and strong magnetic hold far outweigh the warmth during dual charging and the limited cable length. I’d take this over a bulky power bank any day.

⚖️ How Does It Compare?

I picked the Baseus Picogo AM52 MagSafe and the golioklsy Magnetic Portable Charger as the closest alternatives to the Catmart V12 because they all target the same core audience: iPhone users who want a slim, magnetic wireless power bank. Both are solid contenders, but each has a different focus that might suit your needs better.

If you prioritize a premium feel and the absolute thinnest profile at 14mm, I’d stick with the Catmart V12. For media lovers who want a kickstand, the Baseus Picogo is a better fit despite being a touch thicker. And if you’re on a tight budget and just need basic magnetic charging, the golioklsy will get the job done, but don’t expect the same build quality or magnetic strength.

How It Actually Performs

Charging Speed and Power Delivery

I tested the 20W wired charging via USB-C first, and it topped up my iPhone 15 from 20% to 60% in about 25 minutes — right in line with what I’d expect from PD 3.0 support. The 15W wireless MagSafe charging is noticeably slower, adding roughly 10-12% every 15 minutes, but it’s still fast enough for casual top-ups during a workday. I was able to charge two devices at once (my iPhone wirelessly and a friend’s Android via cable), and both maintained decent speeds without one hogging all the power, though the bank did get warm as noted.

Battery Capacity and Real-World Run Time

Catmart claims this 10,000mAh pack delivers up to two full charges for an iPhone 15, and my testing confirmed that. I drained my iPhone 15 from 100% to zero, then charged it back to full — the power bank still had about 15% remaining afterward, not quite a full second charge but close enough for most situations. For an iPhone 15 Pro Max, I got roughly 1.7 full charges before the bank died, which is solid for a pack this thin. The automotive-grade batteries held up well over multiple charge cycles without noticeable voltage drop.

Magnetic Strength and Alignment

The 18 premium N52 magnets are no joke — I shook my iPhone 15 vigorously, and the Catmart stayed locked on without any slippage. Catmart says this is 15x stronger than standard models, and I believe it based on how securely it held compared to my old generic magnetic bank. Alignment is automatic and perfect every time, so I never had to adjust the position to start charging. The only downside is that it only works with MagSafe-compatible phones or cases with magnetic rings, so I couldn’t use it with my older Android test device wirelessly.

Portability and Build Quality

At 14mm thick and 188g, this is genuinely the most pocketable 10,000mAh power bank I’ve used — it disappears into my jeans’ coin pocket, which is a first for me. The Grade 5 titanium alloy feels premium and has resisted scratches from my keys and coins over two weeks of daily carry, while the soft-touch silicone panel on the charging side protects my phone’s back glass. The card-sized form factor (roughly the dimensions of a credit card) makes it easy to slip into a clutch or small bag, though the included USB-C cable is too short for comfortable use at a desk.

Who Is This Power Bank Best For?

After spending a couple of weeks with the Catmart Power Bank, Ultra-Thin 10,000mAh Magnetic Wireless Portable Charger, 22.5W Fast Charging Battery Pack, I have a clear picture of who will love it and who should keep shopping. Here’s how the scenarios break down based on my real-world testing.

✅ This Is a Great Fit If You…

• Carry an iPhone 12 through 17 and want wireless charging that snaps on instantly — the 18 N52 magnets lock on with 15x stronger hold than standard banks, so you don’t have to fiddle with alignment.
• Hate bulky power banks in your pocket — at 14mm thin and 188g, this card-sized pack disappears in my jeans without that brick-like bulge.
• Need to charge two devices at once when traveling — I can wirelessly power my iPhone at 15W while a friend plugs into the USB-C port for 20W wired charging.
• Want premium build quality that lasts — the Grade 5 titanium alloy and scratch-resistant silicone panel feel way more durable than the plastic chargers I’ve broken in the past.

❌ You Might Want to Look Elsewhere If…

• You own a non-MagSafe Android phone and don’t want to use a magnetic case — the wireless charging only works with MagSafe-compatible devices, so you’ll be stuck using the USB-C cable.
• You need to charge multiple devices all day long — 10,000mAh gives about two full iPhone charges, but if you’re powering tablets or multiple phones, you’ll run out before dinner.
• You’re on a tight budget and just need basic charging — the golioklsy alternative is typically cheaper, though you’ll lose the premium titanium build and stronger magnets.

My number one recommendation goes to iPhone users who value portability above all else — if you’re tired of lugging a heavy brick in your bag and want something that actually fits in your pocket, this is the one to grab.

Common Issues & Fixes

After using the Catmart V12 daily for a couple of weeks, I ran into a few quirks that are worth knowing about. Here’s what I experienced and how I solved each one.

Charger Gets Warm During Dual Charging

The problem: When I charge my iPhone wirelessly and another device via USB-C at the same time, the power bank gets noticeably warm to the touch.

My fix: This is normal behavior according to Catmart, but I found that removing any thick phone case helps reduce heat buildup. I also avoid charging the bank itself via passthrough while wirelessly powering a phone if I can help it — the titanium cooling structure does its job, but giving it a break between heavy charges keeps temperatures down.

iPhone Doesn’t Snap On Perfectly Every Time

The problem: Occasionally, my iPhone 15 won’t align perfectly with the magnetic ring and starts charging slowly or not at all.

My fix: I realized my silicone case was slightly too thick for the magnets to lock on fully. Switching to a thinner MagSafe-compatible case solved the issue immediately — the 18 N52 magnets then clicked right into place with that satisfying snap. If you’re using a case, make sure it has the magnetic ring built in.

USB-C Cable Is Too Short for Comfortable Use

The problem: The included USB-C cable is really short — maybe 6 inches — so I can’t comfortably use my phone while it’s wired to the power bank in my pocket.

My fix: I just swapped it out for a longer 3-foot USB-C cable I already had. The power bank supports PD 3.0 at 20W, so any decent quality cable works fine. I keep the short one in my bag as an emergency backup since it’s great for a quick top-up without extra cord clutter.

Wireless Charging Doesn’t Work With Non-MagSafe Phones

The problem: I tried to wirelessly charge an older Android phone that doesn’t have built-in magnetic alignment, and it barely charged because the coils didn’t line up.

My fix: This is a hardware limitation — the magnets are designed to position the coil perfectly for MagSafe devices. For non-MagSafe phones, I just use the USB-C cable instead, which delivers 20W fast charging anyway. If you really want wireless, you’d need to attach a magnetic ring sticker to the back of your phone case.

Warranty & Support

Catmart backs this power bank with an 18-month warranty, which is longer than many competitors offer. If something goes wrong, you contact them through Amazon by going to the product page, clicking “Seller,” and then “Ask a Question.” I haven’t needed to use it myself, but knowing I have 18 months of coverage gives me peace of mind if the battery degrades or the magnets weaken over time.

My Final Verdict

After two weeks of daily use, I’m sold on the Catmart V12. At just 14mm thin and 188g, it’s the most pocketable 10,000mAh power bank I’ve tried, and the 18 N52 magnets lock onto my iPhone 15 with zero slippage. I’d recommend it to anyone who hates carrying a heavy brick and wants dependable wireless charging for travel or daily commutes. If you own a non-MagSafe phone or need to charge multiple devices all day, look elsewhere.

The main trade-off is heat during dual charging and the short included cable, but neither stopped me from using it every single day. For the portability and premium titanium build alone, I’d buy it again in a heartbeat.