AWESOME
Works great on my iPhone 13 Pro: Small, compact, easy to understand lights, doesn’t impede other functions like camera, doesn’t protrude beyond the phone on the bottom, works perfectly through MagSafe compatible case. Read more
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| Connector Type | USB Type C |
|---|---|
| Brand | COSYDUO |
| Battery Capacity | 5000 Milliamp Hours |
| Color | Grey |
| Special Feature | Fast Charging, Pocket Size, Slim, Wireless Charging |
| product_dimensions | 3.23 x 2.32 x 0.43 inches |
|---|---|
| item_weight | 0.004 ounces |
| item_model_number | KL-YD48 |
| batteries | 1 Lithium Polymer batteries required. (included) |
| best_sellers_rank | #167,468 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #2,350 in Cell Phone Portable Power Banks |
| special_features | Fast Charging, Pocket Size, Slim, Wireless Charging |
| other_display_features | Wireless |
| color | Grey |
| manufacturer | COSYDUO |
| date_first_available | March 28, 2024 |












Product video 1
Works great on my iPhone 13 Pro: Small, compact, easy to understand lights, doesn’t impede other functions like camera, doesn’t protrude beyond the phone on the bottom, works perfectly through MagSafe compatible case. Read more
I bought two of these wireless chargers and neither of them worked. I missed the return date because of illness and I will have to just thro them away. Money wasted. I wish I could give no star for rating. Never could use. Read more
A power bank that is compact, magnetic and seamlessly attaches to the MagSafe spot on my iPhone is a great idea. At first, I had some challenges with this device but continuing to try and figure it out… paid off. The first few times I tried to use this product, the power bank was getting extremely hot. This happened two or three times and I couldn’t understand why. Honestly, it was so hot that I didn’t feel comfortable leaving it attached to my phone . Eventually, when connecting the power bank to my phone, instead of attaching it with the power lights and button facing up, towards the top of my phone, I flipped it the opposite direction with the power lights and button pointing down, towards the bottom of my phone. Oddly enough, this completely resolved the overheating issue. I’m really not sure what the difference is but I’m happy that the power bank is now working correctly. It’s extremely convenient and allows me to top up my phones battery a couple times a day. With a total of 5000mAh, turning it on when my phone is around 60% brings my phone back to around 100%. I can do that twice, off one full charge of this magnetic power bank. Now that it is functioning properly, it truly is a handy device. Eliminating cables and being able to charge up my phone on-the-go is a huge benefit. If you’re tired of being tethered to a cable, anytime you need to add some extra power to your phone, this magnetic battery bank will certainly fix that for you. I’m so happy with the way it’s performed that I would not hesitate to buy an additional unit in the future. Read more
I was expecting a thin little thing. It’s not. About 1/2” thick. Heavy let’s see how it charges. Read more
My grandson loves it keeps his I phone 15going Read more
Loved this at first. Super small but after less than a year of using it maybe once a month mine has stopped charging more than a minute at a time. Read more
This charger runs hot when used. Would not recommend. Read more
This battery was exactly what I was looking for: a small (5 mAh) charger with both magnetic wireless and fast power delivery (PD) wired outputs via USB C. It's small enough to fit into your pocket or in a small bag of gear, and isn't heavy like other, larger batteries. You can feel the good build quality when you're holding it in your hand, with its aluminum casing on all sides (except for the MagSafe surface on the bottom). My unit is an attractively understated blue-green color. I was able to charge up my iPhone 12 Pro Max wirelessly, with the phone's thin case only partially reducing the battery's magnetic attraction. I'm sure it would stay even more securely attached without a phone case, but as long as I was careful when holding it, it worked fine. As with any wireless battery charger, the charging rate is not as fast as a direct USB cable due to the inherent inefficiency of wireless charging, but this little battery still did the job quite nicely, even with the (thin) phone case. The instruction manual was a bit confusing with respect to the meaning and color of the four small LED indicators on one edge (there is no "flashing green light" mode that I could see, for example), but I found that the blue charge status lights made perfect sense in actual use. That is, all three lights on the battery charge level will light up without blinking when the battery is full, and the lights begin to wink out as it gradually empties its charge into an attached device. When charging the battery back up, the lights sequentially blink as they make their way up to a full charge, with all three again solidly lit once charging is finished. This is the way other batteries I've used work. There is also an amber "wireless charging" LED next to the three battery level LEDs that comes on randomly during use, at least on my unit - sometimes it stays off and sometimes it goes on, and I can't see any logical purpose for it. Fortunately the battery works just fine in either wireless or USB modes regardless of what the amber light's status is. I wish it could instead be used as another battery charge level, because 25%, 50%, 75% and 100% charge levels would be more useful than the less precise 33%, 66% and 100% levels that are in place now. Besides, when the battery is in use, the connected phone or device will clearly show that it's being charged, thus making a "wireless charging" indicator redundant. There is a power-on button that needs to be pressed to begin wireless charging. After pressing it, there is a lag of a few seconds before your phone will show that it's charging, which may be due to a negotiation between the charger and the phone - just a guess. The battery can wirelessly charge a phone while it's plugged into a wall charger (not included) for recharging, which is a useful feature. All in all, I'm really very happy with this unit despite my quibbles about the LED descriptions in the manual. It's small, lightweight, well built and does a great job charging in either wireless or wired mode. I would happily recommend it. Read more