LUCKYDUO Ultra Slim 10000mAh for Magnetic Portable Charger,0.47IN Thin Wireless Magnetic Power Bank, Compact Battery Pack with PD 20W Two Way USB-C Charging,Compatible with iPhone 16/15/14/13 Series

I travel 8-9 months of the year doing a lot of day trips and some 2-3 day hike through treks where I sometimes don’t have access to electricity other than what I’m carrying. So I’m always looking for portable batteries with the best combination of power capacity, minimal weight and convenience for on the go charging for my iPhone 14 Pro. The last requirement (convenience) is where MagSafe and this battery’s slim profile come into play.This battery is the best I’ve found because it has as much or more capacity than any other 10000 mah I’ve tried while weighing significantly less and being much thinner.I have several 5000 and 10000 mah batteries including Ankers in both sizes. The Anker 5000 weighs 5 ounces or ~140 grams which is one ounce lighter than this 10000 mah Luckyduo, but for wireless charging the fully charged Anker only provides a 65% charge to my phone which frequently isn’t enough for my needs. The 10000 Anker provides 175% wireless charge which is a little less than the 185% I get from the Luckyduo, but the Anker weighs two ounces more and is much thicker & bulkier. So the Luckyduo beats the Anker in every way that’s most important to me. The magnetic adhesion is good and about the same for both of these 10000 mah batteries, but because it’s lighter and thinner the Luckyduo will be less prone to being dislodged when carried in a pocket, backpack or wherever you might stow your phone on the go.It’s almost exactly the same thickness as my iPhone 14 Pro in a typical silicone case.Charging speed isn’t as important to me as the features above, but the charging speed for this battery is a little faster than the Ankers and the 5 or 6 other wireless chargers I’ve tried. Like all the batteries I’ve tried the charging speed slows after the phone is more than 50% charged. From zero to 50% this battery charges my phone at exactly 1% per minute. From 50% - 80% it gradually slows to an average of about 0.7% per minute over that range. The final 20% takes almost an hour or 0.35% per minute. These speeds are a little faster than the Ankers and other wireless batteries I’ve used.Getting 1.85 charges for the 14 Pro equates to about 5550 mah which might sound weak for a 10000 mah battery. But wireless charging is inefficient and this is still better than every other battery I’ve used. I haven’t tried wired charging with this battery yet but I’m sure it will provide more than two full charges for the 14 Pro. Possibly as much as 2.5 charges (7500 mah) based on my experience with other batteries. And in my experience 75% efficiency is as good as it gets with any portable battery. Also, when fully charging my phone the final 20-30% seems to drain the battery faster than the first 70-80%. So if I were to stop charging at 80% this battery might provide more than 200% or two full charges before fully depleting. But I haven’t tested this theory yet.This battery gets only slightly warm when wirelessly charging my phone. Hardly noticeable and it stays MUCH cooler than the Ankers. In fact both Ankers almost always cause my phone to overheat and stop charging to prevent damage when the phone gets to about 80% charged. Which requires me to remove the battery and let both devices cool down before I can get the phone fully charged. I’ve used this Luckyduo four times so far and haven’t had this problem. It charged to 100% every time with no overheating.I’m not sure exactly how long it takes to fully recharge the totally depleted battery, but I know it takes at least 3 hours using a 66 watt output USB-C to USB-C wall charger & cable. Probably closer to 3.5 hours. As usual for all such batteries the recharge speed slows as the charge increases.If two ounces or ~60 grams of weight and the functional convenience of a slim profile are important to you, then you might agree with me that this relatively expensive battery is worth the extra cost.I’m starting a 100 day trip in two weeks which will take me hiking in the Pyrenees, East Africa and SE Asia. If this battery continues to perform as it has in the few days I’ve had it I’ll buy another when I return even if the price hasn’t dropped.Update: after using this battery dozens of times over the past year it has begun to get too warm and stop charging when my phone hits 80%. Same as my Anker and other brands did from day one. But my iPhone battery is also old and has lost significant capacity recently. I don’t know if this might be contributing to the overheating. Regardless, this is still the best 10000 mah battery I’ve used.

Works on samsung products. A little hard to figure right position at first due to camera size. But does fit and stay on. Strong magnet, charges at a decent speed not a lightning charger. There is so.e weight to it but not to bad. It doesn't get hot.

For whatever reason it has trouble with the wireless charging on my Samsung Galaxy s254 Ultra but the magnet still works and it charges through a usb-c to USB C connector that I bought that's only a couple inches long

worked ok in the beginning, I bought it in November 2024 and stopped working in May 2025, it doesn't charge my devices anymore either using with the cable or wireless, it is holding charge or that's what I think because when I try to charge it it shows mid charge and after a few minutes goes to fully charge. pretty much it charges fine but it doesn't deliver charge. I wish I can have my money back but I guess is too late. Never buying this brand again thats for sure!

Very convenient

Nice

I like is lightweight and I bought it for my pixel 7 pro but it doesn't keep charging it. It starts charging and then stops. I know it says for iPhone and for my son's iPhone works but also doesn't have very strong magnet as we can say it moves very easy he also mentioned it gets kind of hot . even though I'm not returning it because my son already took it but I guess would not recommend it. Maybe I got a lemon because most of reviews are very positive.

It is great. Attached to my cell phone it still fits in my jean pocket. It isn’t to heavy. USB C which if you have a new iPhone it’s nice to just carry one cord to charge. I used it while traveling and would say it is two solid charges from 5-10% to full. Maybe 1.75.