Customer Ratings & Reviews

My wife bought a backpack with a convenient USB port for charging a phone. The next step was for me to find a mobile charger that she could carry that would not add a lot of weight. I already had one that I had acquired a few years ago but wouldn’t have the capacity to do the job. So, I went to the BestBuy site and started the search and found a number of possibilities. Some were good candidates. But I decided on the Insignia portable charger in the 8000 mAh size. It was small enough to stow in the backpack pocket designed for that purpose and not take up too much space. It was also pretty highly rated, was available for pickup in the Kalispell BestBuy store and at a reasonable price. So that’s what I got. My wife likes the simplicity of the overall function and is pleased. In the end that’s all that matters. Right?

This charger is easy to use, doesn't run too hot, and I can go long periods without needing to recharge it. It is a bit bulky to carry in a purse, but it does allow for two devices to charge at once, so you can also give a charge to a friend while you charge your own phone. It's also sturdier than the mini-chargers I was using before that would break after a few months.

This is a nice option to get, specifically if you’re a business traveler. The price was very reasonable. It’s small so it’s easy to carry in a backpack or pocket. It has plenty of extra juice to get you through the day if needed. I’ve used this on flights across the US and it beats trying to find an outlet than waiting or fighting for one.

This device will fill up a cell phone approximately 3 times from empty and has USB ports to allow 2 devices to charge at the same time. It's a very clean and compact device and seems to hold a charge for a extended time with minimal loss of charge.

This thing is great! I've used it to charge my iphone, ipad pro, sony a7iii and even a huge battery jumper. It's been great so far and hasn't let me down. When I don't need it, it holds the full charge for weeks until I need it again. It's fairly light, thin and compact. 100% would buy again.

I purchased these to charge my cell phone along with charging my bluetooth speakers on the go. I am able to charge my Samsung 8 two and a half times on 1 charge. And I love that it has a fast charge outlet. Getting two for this price is reasonable especially since the 10,000 mAH I replaced back in 2013 cost me more than the price for the 2 8,000 mAH.

Holds a lot of power, and charges quick enough . Slim and not too heavy. Overall worth the price.

Generally speaking, the bigger the battery, the higher the capacity and quantity of ports you get. Power banks that fit comfortably in your pocket are typically good for a full phone charge or two, while anything designed to keep you going all day is going to require a bag or a purse. On the pocket-friendly front, most smaller batteries that maximize portability have a capacity of 3,500mAh and under, which gives you just enough charge to top up most phones once. Once you get above 3,500mAh, battery size increases to the point where it's less likely to fit into your skinny jeans, but can still be stowed in a jacket pocket. There are even batteries that let you power laptops, and have enough juice to charge the average phone 10 times. Of course, they're some of the biggest and heaviest of the bunch, and definitely need to be carried in a bag. Input and Output Ports The type of port (or ports) a battery has determines not only whether it is compatible with the devices you want to charge, but also charging speed. At a minimum, most battery packs will have a standard micro USB port for input and a USB-A port for output. But with more phones, tablets, and laptops adopting the USB-C standard, you'll often find a USB-C port in addition to USB-A. USB-C generally allows you to charge faster, consolidates input/output to one port, and can be found in many new phones. Now, you do have to be careful, because while some power banks have USB-C input, they don't have USB-C output. Lightning is a proprietary Apple technology, so companies need to pay Apple when they use it; that makes it a bit less common to find. Fast Charging Another factor to consider is how fast a power bank can charge your phone. Battery output is measured in voltage and amperage. Amperage (or current) is the amount of electricity flowing from the battery to the connected device, while voltage is the amount of potential energy. Multiplying volts by amps gives you wattage, the measure of total power. In order to make a device charge faster, most manufacturers either vary the voltage or boost the amperage in order to increase the total wattage. For most fast charging, you're looking at boosting or dynamically varying the voltage. Essentially, for any kind of fast charging you need three things: A phone or other device with a charging circuit capable of using one of the fast charging standards, along with a battery and cable that support the same standard. If any one of these three things is missing, you won't be charging as fast as you can. The two main fast charging standards you're likely to encounter are Samsung's Adaptive Fast Charging and Qualcomm's Quick Charge. Both work in a similar manner, by increasing voltage rather than amperage. As you might imagine, Samsung's Fast Charging only works with certain Samsung devices, while Qualcomm Quick Charge requires that your device has a compatible Snapdragon chipset. These standards allow you to charge supported phones to 50 percent capacity in 30 minutes, which is especially great when you need power in a pinch. Power Delivery, meanwhile, is an even newer protocol in which two compatible devices negotiate on the fastest charging option available, all the way up to 20V/5A (with an EMCA cable) if possible. It also allows for power to flow both ways. Keep in mind, your phone will only take in as much power as its charging circuit is designed for, so even if you have it plugged into a 5V/2A battery, if it's only able to handle 5V/1A, that's the rate it will charge at. For more, read our in-depth guide to fast charging. Pass-Through and Wireless Charging There are a couple of other aspects to consider before selecting a backup battery. Pass-through charging lets you charge devices connected to the battery, while the battery itself is also being charged. If both your phone and backup battery are running on empty, this is a very useful feature. Wireless charging has also become very popular, as it allows you to power up compatible devices without the need for a cable, but simply by resting them on top of the battery. Qi is the dominant standard that you'll find in compatible Apple and Samsung phones, and there are some battery packs out there that support it. Should You Buy a Battery Case Instead? If you find that you often forget to carry your backup battery when you need it most, you might want to think about using a dedicated battery case instead. It combines the portability and protection of a case with a built-in power cell to keep your phone topped off at all times. The downside is that they often have lower charging capacities than dedicated batteries, and you really can't charge anything else with them. One PageSlides ShareTweetPinEmailAnker PowerCore 10000 Works With: Phones, Tablets The Anker PowerCore 10000 ($35.99) is an affordable, compact backup battery that supports Qualcomm's Quick Charge 3.0 standard and can keep your phone running for an entire day of nonstop use thanks to a 10,000mAh battery. It isn't fancy, but it's powerful and economical, if you don't mind a lack of pass-through charging. \n\n (function() {\n var targetLink = document.querySelector('.pcmag-buyitnow .pcmag-buyitnow-table tr[data-commerce-provider=amazon] td.pcmag-buyitnow-buybutton a');\n targetLink.onclick = function(){\n if (!google_trackConversion) return;\n window.google_trackConversion({\n google_conversion_id: 1035223437,\n google_remarketing_only: true\n });\n };\n })();\n" data-commerce-image="https://images-na.ssl-images-amazon.com/images/I/31B5rBNP%2B8L._SL75_.jpg" data-commerce-smallimage="https://images-na.ssl-images-amazon.com/images/I/31B5rBNP%2B8L._SL75_.jpg" data-commerce-largeimage="https://images-na.ssl-images-amazon.com/images/I/31B5rBNP%2B8L.jpg" data-commerce-mpn="AK-848061068320" data-commerce-upc="848061068320" data-commerce-ean="0848061068320" data-commerce-providerid="14" data-commerce-canonicalvendor="Amazon" data-commerce-priceoverride="" data-commerce-ctatext="" data-commerce-vendoroverride="" data-commerce-cached="n" data-commerce-productid="B0194WDVHI" data-zdcserendered="true" style="box-sizing: border-box; color: rgb(13, 31, 45); line-height: 16px; text-decoration: none; min-height: 0px; background: rgb(255, 255, 255); font-family: Roboto, Helvetica, Arial, sans-serif; font-weight: 300; border-radius: 0px; display: inline; margin: 0px 0px 10px; padding: 1px 2px 2px; height: 22px; white-space: nowrap; font-size: 0.6875rem; letter-spacing: 0.4px;">$27.99at Amazon ShareTweetPinEmailAnker PowerCore II 20000 Works With: Phones, Tablets If one USB port isn't enough for you, the Anker PowerCore II 20000 ($59.99) offers double the ports and double the capacity (20,000mAh) of the PowerCore 1000. \n\n (function() {\n var targetLink = document.querySelector('.pcmag-buyitnow .pcmag-buyitnow-table tr[data-commerce-provider=amazon] td.pcmag-buyitnow-buybutton a');\n targetLink.onclick = function(){\n if (!google_trackConversion) return;\n window.google_trackConversion({\n google_conversion_id: 1035223437,\n google_remarketing_only: true\n });\n };\n })();\n" data-commerce-image="https://images-na.ssl-images-amazon.com/images/I/319PF20JUXL._SL75_.jpg" data-commerce-smallimage="https://images-na.ssl-images-amazon.com/images/I/319PF20JUXL._SL75_.jpg" data-commerce-largeimage="https://images-na.ssl-images-amazon.com/images/I/319PF20JUXL.jpg" data-commerce-mpn="AK-A1260011" data-commerce-upc="848061049749" data-commerce-ean="0848061066197" data-commerce-providerid="14" data-commerce-canonicalvendor="Amazon" data-commerce-priceoverride="" data-commerce-ctatext="" data-commerce-vendoroverride="" data-commerce-cached="y" data-commerce-productid="B01LQ81QR0" data-zdcserendered="true" style="box-sizing: border-box; color: rgb(13, 31, 45); line-height: 16px; text-decoration: none; min-height: 0px; background: rgb(255, 255, 255); font-family: Roboto, Helvetica, Arial, sans-serif; font-weight: 300; border-radius: 0px; display: inline; margin: 0px 0px 10px; padding: 1px 2px 2px; height: 22px; white-space: nowrap; font-size: 0.6875rem; letter-spacing: 0.4px;">$59.99at Amazon ShareTweetPinEmailAnker PowerCore+ 26800PD Works With: Laptops, Phones, Tablets Anker's all-out PowerCore+ 26800 PD($129.99) adds a USB-C port to the list, letting you charge your notebook as well as your phone and tablet thanks to 26,800mAh of power. That's a huge boon for Macbook, Surface, and Chromebook users. \n\n (function() {\n var targetLink = document.querySelector('.pcmag-buyitnow .pcmag-buyitnow-table tr[data-commerce-provider=amazon] td.pcmag-buyitnow-buybutton a');\n targetLink.onclick = function(){\n if (!google_trackConversion) return;\n window.google_trackConversion({\n google_conversion_id: 1035223437,\n google_remarketing_only: true\n });\n };\n })();\n" data-commerce-image="https://images-na.ssl-images-amazon.com/images/I/41Pi-jS9IOL._SL75_.jpg" data-commerce-smallimage="https://images-na.ssl-images-amazon.com/images/I/41Pi-jS9IOL._SL75_.jpg" data-commerce-largeimage="https://images-na.ssl-images-amazon.com/images/I/41Pi-jS9IOL.jpg" data-commerce-mpn="AK-848061064070" data-commerce-upc="848061064070" data-commerce-ean="0848061064070" data-commerce-providerid="14" data-commerce-canonicalvendor="Amazon" data-commerce-priceoverride="" data-commerce-ctatext="" data-commerce-vendoroverride="" data-commerce-cached="n" data-commerce-productid="B01MZ61PRW" data-zdcserendered="true" style="box-sizing: border-box; color: rgb(13, 31, 45); line-height: 16px; text-decoration: none; min-height: 0px; background: rgb(255, 255, 255); font-family: Roboto, Helvetica, Arial, sans-serif; font-weight: 300; border-radius: 0px; display: inline; margin: 0px 0px 10px; padding: 1px 2px 2px; height: 22px; white-space: nowrap; font-size: 0.6875rem; letter-spacing: 0.4px;">$129.99at Amazon ShareTweetPinEmailAukey 10000mAh Power Bank With Power Delivery Works With: Phones, Tablets The Aukey 10000mAh Power Bank With Power Delivery ($29.

I can charge my phone at least twice on a charge. It recharges quickly. I especially like that it is similar in shape to my phone so I can carry them both easily in one hand if need be. I just got back from a 3-week trip to the British Isles and it kept me charged the entire time! I wonder why I waited so long to get a portable charger!

I put off buying a portable iPhone charger, thinking it would probably be expensive or unwieldy, but this little item is just perfect. It's easy to charge, small enough to keep in my bag, and works just fine for charging my power-hungry iphone. I wish I'd bought it sooner!

Excellent charging source for my cell phone. Once charged this small charger can charge multiple cellphones several times. The charging time is extremely fast. Lightweight. Easy to store and use. Great little charger for the money.

I exchanged a power bank made by Samsung because it was not compatible with my Samsung phone. (?) I know, go figure. The Best Buy associate recommended this one. It was half the price of the Samsung AND it allows multiple devices to be charged at the same time. Win-Win!!

My iPhone was old and would die quickly I would need to charge it three times a day at least. This battery saved me I could go four days without charging it again if it was fully charged. Charges phone quick and fits in my purse or coat pocket.

I like this portable charger because its slim design. It fits perfectly in backpack, laptop case, purse. It is light so it does not add more weight to my backpack or purse. It charges reasonably quick. It is not over-priced too.

Great chargers works great charges your phone fast easy to carry around wherever you go highly recommended it specially if you travel a lot you’ll have a good battery backup

These items were so needed for when i am at g'kids ballgames and when travelling. They recharge my phone as needed and charge my phone while i use my phone watching things on phone

Easy to use and recharge any mobil device. Recharges quickly, holds it's charge until needed and charges the connected device completely. Add an Apple Lightening cable and you are set for charging most mobile devices.

The experience with this product is great. It charges quickly and lasts a while. Works as good as other name brands, but saves you tons of money. A good gift and a good investment as well .

This product came in handy when I was on a one-day bus trip. As my phone declined in battery power, this index-sized portable charger did the trick. Easy to keep it charged when not in use.

The charger has a very long battery life and I love the nice sleek look of the exterior. It also has two ports so you can charger multiple at one time! Overall great charger!