Customer Ratings & Reviews

I've had many chargers and this one is one of my favorites. First of all it comes in a drawstring pouch that's great for carrying a couple cables when not in use. Second is the ability to change the power output for charging headphones vs charging a phone. Lastly I brought this with me for backpacking South America and it has been a life saver. I hiked the Inca trail to Machu Pichu and was able to keep my Samsung S21 alive the 4 days plus have a little juice left for the way back to Cusco. It has a sleek design and the weight hasn't been an issue carrying it in my pocket or day bag. Would highly recommend.

Very good product, reliable, good brand, reasonable price

Works as expected and gets the job done just doesnt super charge

Needed this for a 10-day trip to the UK where I couldn't be without my smartphone. Since I was taking a LOT of photos and videos while sightseeing, I knew that much screen-on time on full brightness outside would deplete my smartphone battery much faster. This worked perfectly for my needs. It looked like one of the slimmer 20k power banks, and fit in my pocket perfectly with my smartphone charging from it. This Anker power bank never got warm while it was charging my phone in my pocket. (My smartphone got somewhat warm while recharging from it, but that's normal.) So it was a little extra heavy in the pocket but I knew that it would have plenty of capacity to keep my phone charged on the go all day. It has a lot of capacity, as I only needed to recharge it once during my trip. You will need your own USB-C PD charger for it if you want it to recharge quickly within about 6.5 hours. Many newer Android smartphones use this kind of charger already. Just be aware that you don't really get 20,000mah capacity in actual usage. The way many power banks work is that they lose a fair amount while charging your devices due to inefficiency. Anker has stated that their power banks use up 30-40% due to this inefficiency and therefore lose that much. (The best analogy I can think of is that incandescent light bulbs use 90% of electricity to generate heat and only 10% of the electricity used actually generates light. So that's a 90% inefficiency rate for old style light bulbs.) So a 20,000 mah battery like this would only deliver between 12,000 to 14,000 mah capacity in real usage on a single charge after you factor in the inefficiency loss. That's enough to fully charge many smartphones at least twice, if not more. This inefficiency is probably true of most power banks out there, because I've noticed this phenomenon with other 5,000 to 10,000 mah power bank batteries in the past. Which is why I went with the 20k version this time around. Just mentioning it here so you know what you're really getting. This is a very good power bank from my initial usage so far. Anker is a very good brand and I've been happy with a number of their products. I found that they stand behind their products pretty well, and their customer service support is very good. This model lets you charge devices from two USB-A ports and of course the USB-C port. The USB-C port delivers charging via PD at 20 watts. While that's not the top charging speed for some of the newer smartphones, it is still a form of rapid charging. However, I believe you only get the rapid charging if you use one of the ports at a time. If you charge multiple devices at the same time, then the charging rates drop because the electrical output is shared across the USB ports. To get faster charging speeds, you'll need to spend a lot more on a different power bank. This particular power bank model is best used for charging smartphones and tablets, but not laptops. This power bank also has a lower power charging mode for tinier devices like earbuds. Just press the power button twice and the LED will turn green to indicate this mode, which is safer and gentler to recharge those tinier batteries. Overall, no complaints and I would highly recommend it for the uses I covered above. It's not the cheapest power bank in this class (should be closer to $50 in my estimate) but you get what you pay for.

This charger is a beast. with 20k mAh, you can charge quite a few devices or your device a few times. I have an S20 FE which has a capacity of 4500mAh. i can get it charged 4 times. In a pinch for a long weekend out (like camping) i should be fine. this battery pack also looks great. it has a nice fabric wrap on the top half that feels nice and looks good. When i travel, i like to bring with me a battery pack and then plug my phone, watch, headphones into them all at once over night and have that plugged in. saves me from bringing too many wall plugs. while this pack has a very fast charge, it has a trickle option. This is great for low power items like headphones and watches. i don't need my devices to charge super fast in an hour if its going to be plugged in for 8, it can take its time it is heavier than what i'm used to, but not as heavy as you'd expect. see pictures, my 10k mAh weighs 209g and this 20k weighs only 352 g. not the double weight i was expecting. one thing that surprised me was the variance of the ports. If i plugged in my phone into a USB A port i had a charge time of 58min to full. when i plugged the same phone into the USB C port, it became 66 min. I would have thought if anything, the USB C port would be faster or at least the same. Although this could be the cable limitation. i'll have to try others.

Product died today. Its USB type c port became loose after one year of usage. Today when I pressed the round button to check remaining charge level, no lights came on. It was a good product 2 years ago. but now since more thin and light laptops supports USB-c charging and minimum input is usually set to 30W, a 20W powerbank can not serve as laptop charger.

Change battery need one day. Only use three times.

We all run out of power occasionally, so why not plan ahead and pick up a solid charger like this Anker Powercore III 20K mAh. It is a life-saver for those dependent on staying connected! This sturdy, well constructed device has but one button that can alternate charging speeds (trickle/fast). It contains 4 small LEDs that indicate the current charge capacity of the device. Along the bottom are 3 USB ports ( 2 USB-A and 1 USB-C). Use the Type C port to charge the device as well as to connect to devices you want to charge. It's also very thin - as you can see in the picture compared to a pen. Gave 4 stars because: 1. It's not wireless. I think all devices should be wireless capable - but you'll have to spend more for that upgrade. 2. No charger block/brick is included. You simply get the battery device, a short USC-A to USB-C cable, and a cool mesh bag to carry it in. Overall - very pleased with the Anker Powercore III 20K device and its ability to fast charge. The 20000 mAh is enough to charge me phone 4-5 times if needed!

This little battery pack is amazing. It charges all of my devices.

I've had the pleasure of using the Anker PowerCore III Sense 20K mAh 20W PD USB-C Portable Battery Charger, and I must say, it's an absolute game-changer when it comes to portable charging solutions. Here's why I'm so impressed: Massive Capacity: With a whopping 20,000mAh capacity, this portable charger ensures that I never have to worry about running out of power while on the go. Whether I'm traveling, camping, or simply out and about for the day, I can rely on the PowerCore III Sense to keep my devices juiced up and ready for action. High-Speed Charging: Thanks to its Power Delivery (PD) technology and 20W USB-C output, this charger delivers lightning-fast charging speeds for compatible devices. Whether I'm charging my smartphone, tablet, or even my laptop, I can count on the PowerCore III Sense to recharge them quickly and efficiently. Versatile Compatibility: The PowerCore III Sense is equipped with multiple charging ports, including USB-C and USB-A, ensuring compatibility with a wide range of devices. Whether I'm using an iPhone, Android phone, iPad, or any other USB-powered device, I can rest assured that this charger has me covered. Intelligent PowerIQ 3.0: Anker's exclusive PowerIQ 3.0 technology ensures intelligent charging that's optimized for maximum efficiency and safety. It automatically detects the connected device and delivers the optimal charging current, preventing overcharging and prolonging the lifespan of my devices' batteries. Compact and Portable: Despite its impressive capacity, the PowerCore III Sense remains remarkably compact and portable. Its sleek and slim design easily slips into my bag or pocket, making it perfect for travel or everyday use. Plus, the durable exterior ensures that it can withstand the rigors of life on the go. Reliable Build Quality: Anker is known for its exceptional build quality and reliability, and the PowerCore III Sense is no exception. It's built to last, with premium materials and advanced engineering that ensure long-lasting performance and durability. In summary, the Anker PowerCore III Sense 20K mAh 20W PD USB-C Portable Battery Charger is an absolute must-have for anyone in need of reliable portable power. Whether you're a frequent traveler, a busy professional, or just someone who values convenience and peace of mind, this charger delivers unparalleled performance and reliability. Highly recommended!

When I first got it, it worked perfectly. As I used it more each day I noticed it was charging my cell phone. I thought maybe I didn’t recharge the power bank. So I left it to charge over night and power battery was at 1 in the morning. So now this power bank is useless and a waste if money.

The Anker PowerCore III Sense 20K is an excellent power bank. When the power bank is fully charged, I was easily able to rapidly charge my Pixel 6 Pro or my iPhone 4 times. Also, the power bank itself is able to quickly charge. During my testing the power bank maintained a strong flow of power and never got warm. I highly recommend it.

With a 20,000mAh capacity, it can provide multiple charges to your phone or tablet. It also supports fast charging, so you can quickly get your devices back to full power. It has two USB-A ports and one USB-C port which allows you to charge two devices simultaneously. It's a bit heavy to carry around in your pockets, but its capacity makes it a great option for long trips or days when you know you won't have access to an outlet. Overall a great pick and would definitely recommend!

It feels super sturdy, very well constructed and very nice to the touch, it has like a fabric on top. They include a short Type C usb cable and they do not include any sort of power brick to charge it, but you can use any you have at home, if it gives power via usb, it will charge the power bank. There is a nice round metallic button that has small LEDs that show the battery level (you can also put the charger into trickle charge mode, for devices that don’t need fast charging or don’t pull that much power, like earphones etc.). There are 3 usb ports (2 type A and 1 type C), you can charge devices with any (the type C port serves as the port to charge the bank itself). It charged my Galaxy note 20 ultra-super quick and an Amazon fire HD table too. I highly recommend this power bank for anyone wanting to recharge their devices on the go, its well-constructed and not that heavy to carry around a bag or backpack!

So far I have charged my iPad mini 6 (that only uses usb) and it does the job. It has a mesh carrying bag which is nice. I possibly may strap this to my bike for use with a usb headlight that I have; just have to find a bag with straps of some sort. The charging time seemed to be about a fair hour to a full charge when I received it (believe it was at 50% or two dots out of four lit). It feels a bit heavy so I wouldn’t consider it lightweight; what makes up for it is ability to charge other devices for a while until it’s own battery is depleted; a total of 3 ports 2 usb 3 (or standard) and 1 usb c which is more modern nowadays. I like it and would recommend it.

This portable battery charger is a powerhouse! With its capacity, I can charge my phone multiple times before needing to recharge the power bank itself. It's incredibly convenient for long trips or when I'm on the go and can't always find a power outlet. The design is sleek and compact, fitting easily into my bag without adding much weight. I especially love the USB-C input/output feature, which allows for faster charging and compatibility with a wide range of devices. The additional USB-A ports make it easy to charge multiple devices simultaneously, which is a huge bonus. One of the standout features is the trickle-charging mode, which is perfect for charging low-power devices like Bluetooth headphones or smartwatches. The overall build quality feels premium, and the fabric finish adds a nice touch of style. Anker has always been reliable, and this product is no exception. The PowerCore III Sense 20K is a must-have for anyone looking for a durable, high-capacity portable charger. Highly recommended!

So far so good. I'll be testing it out more extensively on a trip next month. It did take several hours to fully charge and it took me some time to figure out which charger to use to charge the battery. It's heavier than other battery chargers I've owned but it is also beefier (able to charge multiple devices at once) and quicker. I got it on sale and used a Best Buy rewards certificate which made it a great deal! Also, free shipping, so I didn't even have to go to the store. And it was shipped from a nearby city, so it arrived the following day.

Great product! I bought another one for my parents for traveling. I take it with me everywhere! It can charge my tablet s7+ in approximately 2hrs from 25%. If you lose the cable to charge the power bank, don’t worry. As long as it’s a type-c to type-c charger and adapter, it works! So traveling with this product is super easy because all I have to carrier to charge most of my electronics is a type-c charger.

The Anker PowerCore III Sense 20K USB-C Portable Battery Charger is a robust and stylish power bank that offers a substantial 20,000mAh capacity, making it ideal for charging multiple devices on the go. It features a dual USB-A output and a USB-C input/output, allowing for versatile charging options and faster recharging times. The power bank's sleek design includes a LED indicator for battery levels and is equipped with Anker's PowerIQ and VoltageBoost technology for optimizing charging speeds. With its reliable performance and high capacity, it's an excellent choice for travelers or anyone needing reliable, portable power.

Compact and charges my devices quickly. The textured front end gives it a distinct feel that has been helpful when digging through a bag of other devices to distinguish it from the others. Been using it off and on for a week and still has juice left for my phone.