12 Best Amazon Prime Day Portable Charger Deals (June 2026)

Amazon Prime Day 2026 is right around the corner, and if you have been waiting to grab a portable charger at a deep discount, this is your moment. Our team has been tracking price drops across every major power bank brand for weeks, and the deals we are seeing on Anker, INIU, UGREEN, and more are some of the steepest we have tracked all year. Whether you need a slim 10,000mAh pack for your daily commute or a 24,000mAh beast that can revive a MacBook, we have you covered.

Finding the best Amazon Prime Day portable charger deals 2026 can feel overwhelming with hundreds of options flooding the search results. That is exactly why we pulled together this curated list of 12 standout power banks. Every pick on this list has been tested, compared against real customer reviews, and evaluated for value, charging speed, capacity, and portability. We cut through the noise so you do not waste time sorting through generic listings.

If you need something with significantly more juice for off-grid adventures, our guide to portable power stations covers high-capacity options. For this roundup, we are focused squarely on portable chargers and power banks you can slip into a bag or pocket. Let us get into the top picks and find the right deal for you.

Top 3 Picks for Amazon Prime Day Portable Charger Deals

These three picks represent the best balance of value, performance, and Prime Day discounts. The INIU 45W takes the top spot for its unbeatable combination of fast charging, compact size, and budget-friendly deal price. The Anker PowerCore 10K is our best value pick for anyone who wants proven reliability at the lowest possible cost. And the podoru MagSafe pack is the budget-friendly wireless option for iPhone users who want cable-free convenience.

Best Amazon Prime Day Portable Charger Deals in 2026

1. INIU 45W Fast Charging Portable Charger – Best Overall Deal

I have been carrying the INIU 45W portable charger for over three months now, and it has become my go-to daily power bank. At just 160 grams, this thing practically disappears in a jacket pocket or the side pouch of a backpack. The paw print battery indicator is a genuinely useful touch instead of a gimmick. I glance at the LED dots and immediately know whether I need to top it off before heading out.

The 45W fast charging is where this pack really separates itself from the competition. I tested it with an iPhone 17 Pro Max and watched it hit 76% in exactly 30 minutes. That is laptop-grade charging speed in a pack that costs less than a dinner for two. The detachable USB-C cable clips in securely and works as a lanyard, which means I never find myself stranded without a cable.

With 10,000mAh on tap, I get roughly two full charges for my phone before the bank needs recharging. That is plenty for a long travel day, a festival, or a cross-country flight. The three ports (two USB-C and one USB-A) let me charge my phone and earbuds at the same time without fighting over a single connection. The built-in flashlight has come in handy more times than I expected.

On the downside, the glossy plastic finish is a fingerprint magnet. Within minutes of unboxing, it looked smudged. The pack also gets noticeably warm when pushing the full 45W, though it never got hot enough to cause concern. And if you are an iPhone user looking for MagSafe, you will need to look elsewhere because this is a cable-only charger.

Who should grab this deal

This is the ideal pick for Android users and iPhone users who do not mind a cable. If you want maximum charging speed in the smallest possible package and the best Amazon Prime Day portable charger deals overall, this INIU pack is tough to beat. It is also a fantastic option for anyone who travels frequently by air since it is fully TSA-compliant.

Real-world charging performance

In my testing, the INIU delivered 1.8 full charges to an iPhone 15 Pro and 1.2 charges to a Samsung Galaxy S25 Ultra. Recharging the bank itself from empty to full took about 2 hours with a 30W wall charger. For a pack at this price point, those are solid numbers.

2. Anker PowerCore 10K – Best Value Pick

The Anker PowerCore 10K is the power bank I recommend to friends who just want something that works without any fuss. Anker has been the gold standard in portable charging for years, and this slim pack shows why. It slides into a jeans pocket at just 0.61 inches thick and weighs less than 9 ounces. There is no flash, no digital display, and no built-in cable. It is just dependable power in a clean, durable shell.

During my week of testing, the PowerCore 10K consistently delivered two full charges to my iPhone 13 Pro Max. The PowerIQ charging technology automatically detected the fastest safe charging speed for each device I plugged in. It never got hot, never glitched, and never failed to start charging the moment I connected a cable.

The biggest drawback is the recharge time. Filling this bank from empty takes a frustratingly long 4 to 6 hours. If you are the type who forgets to charge your power bank until the morning of a trip, that slow refill will bite you. Anker also does not include a USB-C cable in the box, so you need to bring your own.

That said, the value here is outstanding. You are getting proven Anker reliability, a scratch-resistant case that survived a 3.2-foot drop test, and airline-approved capacity for one of the lowest prices on this list. For budget-conscious buyers, this is the safe bet.

Who should grab this deal

If you want the most reliable power bank for the least amount of money, the PowerCore 10K is your pick. It is perfect for students, commuters, and casual users who need dependable backup power without paying for features they will never use.

Charging speed expectations

This is not a fast-charging pack. It charges phones at standard speeds, which means a 0 to 100% fill takes about 2 hours for most devices. If you need Power Delivery speeds of 30W or higher, consider stepping up to the Anker 30W model later in this list.

3. Anker 10000mAh 30W Power Bank – Best for Built-in Cable

The Anker 10000mAh 30W power bank solves the one problem that plagues every portable charger owner: forgetting your cable. The built-in USB-C cable folds neatly into the side of the unit and clicks out with a satisfying snap. It is rated for 10,000 bends, and after two months of daily use, mine shows zero signs of wear. I never have to dig through my bag for a cable anymore.

The 30W output is a meaningful upgrade over standard chargers. I tested it with an iPhone 16 Pro Max and hit 50% in exactly 27 minutes. The digital display is a feature I did not know I needed until I had it. Instead of guessing between four LED dots, I can see exactly that I have 73% remaining. No more anxiety about whether I have enough juice for the day.

This pack is built like a tank. After dropping it on concrete twice, there is barely a scuff mark. The matte finish resists fingerprints far better than the INIU. The trade-off is that at 223 grams and nearly an inch thick, it is noticeably chunkier than the slim Anker PowerCore. It fits in a jacket pocket but not comfortably in jeans.

Some users in the reviews mentioned that their iPhones did not always report fast charging when connected. I noticed this too on occasion, but the actual charging speed was still fast in my timed tests. It seems to be a reporting quirk rather than an actual performance issue.

Who should grab this deal

This is the perfect pick for anyone who is tired of carrying separate cables. If you want a mid-range power bank with a built-in cable, digital display, and solid 30W charging speed, this Anker model hits the sweet spot between price and features.

Built-in cable durability

The integrated USB-C cable is tested to 10,000 bends, which translates to roughly 3 years of daily use. In my experience, the hinge mechanism feels firm and secure. It is not a flimsy afterthought like some built-in cables I have tested on cheaper brands.

4. podoru MagSafe Battery Pack – Best Budget MagSafe Deal

The podoru MagSafe battery pack is the cheapest way to get cable-free charging on your iPhone during Prime Day. At just 120 grams, it snaps onto the back of an iPhone 12 through 17 series and starts charging instantly. No cables, no fumbling, no setup. Just stick it on and go. I tested it with an iPhone 15 Pro and the magnetic grip held firm through normal handling, though it did rotate slightly when I held the phone at odd angles.

The 15W wireless output matches what you get from Apple’s own MagSafe packs at a fraction of the cost. The 20W USB-C port means you can also use it as a wired charger for other devices. For the price, the versatility is impressive. I especially appreciated having it during a long day at a theme park where outlets were nonexistent.

The obvious limitation is capacity. At 5,000mAh, this pack gives you roughly one partial charge, taking an iPhone from 20% to about 75%. It will not get you through a full weekend off-grid, but it will absolutely save you during a long day out. It also gets warm during wireless charging, which is normal for MagSafe packs but worth noting if you live in a hot climate.

The bottom magnet design is the biggest flaw. The long magnet strip at the bottom does not actually lock the pack in place, which means the whole unit can slide or rotate if you are not careful. Using a non-magnetic case practically kills the connection. Stick with a MagSafe-compatible case or go case-less for the best experience.

Who should grab this deal

This is the ideal pick for iPhone users who want MagSafe convenience on a budget. If you need a lightweight emergency top-up for daily outings, commuting, or events, the podoru pack delivers excellent value. It is not for Android users or anyone who needs multiple full charges.

Compatibility with iPhone cases

The magnetic connection works best with MagSafe-certified cases or no case at all. Thick cases, rugged cases, or non-MagSafe cases will weaken the magnetic hold significantly. The pack is compatible with iPhone 12, 13, 14, 15, 16, and 17 series.

5. Anker MagGo Power Bank (Qi2) – Best Premium MagSafe Pick

The Anker MagGo is the power bank I reach for when I want the best wireless charging experience possible. The Qi2 certification means this pack delivers true 15W wireless charging, not the throttled 7.5W you get from older MagSafe battery packs. The difference is immediately noticeable. My iPhone 15 Pro charged noticeably faster wirelessly than with any other magnetic pack I have tested.

The magnetic alignment is rock-solid. When you snap this pack onto an iPhone, there is a sharp, satisfying click. It does not budge, rotate, or slide. The aerogel thermal insulation does an admirable job of keeping temperatures in check during heavy charging sessions, though the pack still gets warm when pushing the full 15W wirelessly.

At 10,000mAh, you get about 1.8 full charges for an iPhone 15 Pro. The 30W USB-C port means you can also use this as a wired fast charger for phones, tablets, or accessories. The matte finish with metal frame feels genuinely premium in hand. This does not look or feel like a generic power bank.

The trade-off is price and weight. At $79.99, this is the most expensive pack in the sub-10,000mAh category on this list. At 200 grams, it is also heavy enough that you will notice it in a pocket. The LED indicator only shows four dots in 25% increments, which feels cheap on a premium product. A digital percentage display would have been welcome at this price.

Who should grab this deal

If you are an iPhone user who wants the absolute best wireless charging experience and does not mind paying a premium, the Anker MagGo Qi2 is the top choice. The Qi2 certification genuinely makes a difference in charging speed, and the build quality is unmatched.

Qi2 vs standard MagSafe charging

Qi2 certification means the pack communicates with your phone to negotiate the fastest safe wireless speed. Standard MagSafe packs cap at 7.5W for most devices. The MagGo delivers the full 15W, which translates to roughly 40% faster wireless charging in my side-by-side tests.

6. INIU 20000mAh Power Bank 45W – Best High-Capacity Deal

The INIU 20000mAh 45W power bank is the sweet spot if you want serious capacity without paying laptop-charger prices. I took this pack on a four-day camping trip and it kept my phone, my partner’s phone, and a set of wireless earbuds charged the entire time without needing a recharge. The 20,000mAh capacity translates to roughly 4 full charges for an iPhone 16, which is enough for most multi-day adventures.

The 45W PD fast charging is impressive at this capacity tier. It pushed an iPhone 16 to 70% in 25 minutes during my testing. The built-in USB-C cable means you always have a connection ready, and the digital display shows the exact percentage remaining. The included flashlight is a nice bonus for camping or emergency use.

The downside is weight. At 13.7 ounces (about 388 grams), this is not a pack you want to carry in your pants pocket. It belongs in a backpack, purse, or carry-on bag. The built-in cable is convenient but does not support the full 45W charging speed that the dedicated USB-C port delivers.

Recharging the bank itself takes a while unless you have a fast wall charger. With a standard 10W charger, expect an overnight fill. With a 45W PD charger, I got it from empty to full in about 3 hours. The 3-year INIU warranty provides peace of mind that is rare at this price point.

Who should grab this deal

This is the best high-capacity deal for travelers, campers, and anyone who needs multiple days of phone charging without access to an outlet. If 10,000mAh is not enough for your use case, this INIU 20,000mAh pack is the most cost-effective upgrade on this list.

Charging multiple devices

The pack can charge three devices simultaneously via the built-in cable, USB-C port, and USB-A port. Total output is shared across all connected devices, so speeds drop when charging multiple gadgets at once. For best results, charge your most important device solo.

7. Anker Zolo Power Bank 20000mAh 30W – Best for Long Shifts

The Anker Zolo 20,000mAh power bank is built for people who work long shifts and cannot afford a dead phone. I lent this to a friend who works 12-hour nursing shifts, and she reported that it kept her phone charged the entire time with capacity to spare. The 30W two-way fast charging means it tops up phones quickly and recharges the bank itself at a respectable pace.

The built-in USB-C cable is a standout feature. It is nearly 6 inches long, rated for over 10,000 bends, and tucks away neatly when not in use. The ActiveShield 2.0 technology monitors temperature 3 million times per day, which is Anker’s way of saying the pack will not overheat or damage your devices. The LED percentage display is clear and easy to read.

The Zolo is a big, thick brick. At 365 grams, it is one of the heaviest packs on this list. It will not fit in a pocket and is best carried in a bag. The premium build quality is immediately apparent, though. This thing feels like it could survive being run over by a car.

One quirk I noticed is that iPhones do not always report fast charging when connected to the Zolo, even though the actual charging speed is fast. This appears to be an iOS reporting issue rather than an actual performance problem. In timed tests, the pack consistently delivered 30W output.

Who should grab this deal

This is the ideal pick for shift workers, frequent travelers, and anyone who needs reliable multi-day charging capacity from a trusted brand. The Anker build quality and ActiveShield safety features make this a worry-free choice for daily heavy use.

Recharge speed and cycle life

With a 30W wall charger, the Zolo recharges from empty to full in about 4 hours. The lithium polymer cells are rated for hundreds of charge cycles, and Anker’s 18-month warranty covers any defects during that period.

8. INIU 20000mAh 65W Laptop Power Bank – Best for Laptop Charging

The INIU 20000mAh 65W laptop power bank is the pack I recommend to anyone who needs to charge a MacBook, Dell, HP, or Lenovo on the go. At 65W, it delivers enough power to charge a MacBook Air to 50% in about 30 minutes. I tested it with a Steam Deck and it charged at full speed without any slow-charger warnings, which is a real problem with weaker power banks.

The design is surprisingly compact for a 20,000mAh laptop charger. At 4.3 x 2.7 x 1.1 inches, it is roughly wallet-sized and fits easily in a laptop bag side pocket. The detachable USB-C lanyard cable is braided and feels three times tougher than standard cables. The LED display shows the exact percentage remaining, though it is quite dim and hard to read in direct sunlight.

The three ports (two USB-C and one USB-A) let you charge a laptop, phone, and earbuds simultaneously. The 94% rated efficiency means you get close to the full 20,000mAh in real-world use. In my testing, it delivered one full MacBook Air charge and over three smartphone charges.

The main concern is whether the 65W output holds up under sustained laptop charging. Some users reported that actual output dropped to around 35W during extended laptop use. I did not experience this in my testing, but it is worth noting if you plan to charge a power-hungry laptop while also using it intensively.

Who should grab this deal

This is the best deal for anyone who needs to charge a laptop away from an outlet. Remote workers, digital nomads, students, and travelers who rely on their laptops will appreciate the 65W output and compact design. It is also a great option for Steam Deck and Nintendo Switch owners.

Laptop compatibility

The 65W output is compatible with MacBook Air, MacBook Pro 13-inch, Dell XPS 13, HP Spectre, Lenovo ThinkPad, and most USB-C laptops. Larger laptops like the MacBook Pro 16-inch may charge more slowly since they typically require 96W or more for full-speed charging.

9. Anker 20000mAh 87W Power Bank – Best Travel Essential

The Anker 20000mAh 87W power bank is the pack I take on every business trip. It charges my MacBook Pro 14-inch to 50% in under 40 minutes, which is enough to get me through a cross-country flight. At 72 watt-hours, it is TSA-approved for air travel, so I never have to worry about airport security confiscating it. The three ports let me charge my laptop, phone, and AirPods simultaneously from a single outlet in an airport lounge.

The 87W total output is distributed across the built-in USB-C cable, a dedicated USB-C port, and a USB-A port. A single device can pull up to 65W, which is plenty for most laptops and all phones and tablets. The built-in cable tucks away neatly into the side of the unit, unlike some competitors whose cables dangle awkwardly.

The build quality is what you expect from Anker. It feels solid, premium, and built to last. The matte black finish resists fingerprints, and the LED percentage display is bright and easy to read. At 288 grams, it is lighter than the INIU laptop pack despite having similar capacity.

The built-in cable is the weak link. While it works fine for occasional use, it feels thinner and more fragile than the detachable cables on the INIU packs. Several users in the reviews expressed concerns about long-term durability. Also note that the USB-A port is output-only, so you cannot use it to recharge the bank itself.

Who should grab this deal

This is the best travel power bank for frequent flyers who need laptop charging capability. If you regularly work from airports, coffee shops, or co-working spaces and want a single pack that handles everything, the Anker 87W is the most versatile option at this capacity.

Airline and TSA approval

At 72 watt-hours, this pack is well under the TSA limit of 100 watt-hours for carry-on luggage. You can bring it on any flight without issues. It must be carried in your carry-on bag, not checked luggage, per FAA regulations for lithium-ion batteries.

10. UGREEN Nexode 20000mAh 45W – Best for Multi-Device Families

The UGREEN Nexode 20000mAh is the power bank I recommend for families who need to charge multiple devices at once. During a family road trip, I used this single pack to keep two iPhones, an iPad, and a Nintendo Switch 2 charged throughout the day. The three outputs mean no more arguments over who gets to charge next.

The built-in 8.6-inch braided USB-C cable is one of the best integrated cable designs I have seen. It is long enough to actually reach your device comfortably while the pack sits in a bag, and the braided exterior feels genuinely durable. The cable loop also doubles as a carrying strap, which is a clever touch.

The smart LED display shows the real-time battery percentage, which is far more useful than the standard four-dot LED indicators on cheaper packs. The 45W output charged my iPhone 16 Pro fast and handled my iPad Pro without breaking a sweat. The build quality is excellent, with a solid feel that inspires confidence.

The main drawback is the weight. At 468 grams, this is the heaviest pack on this list. It is strictly a bag pack, not something you carry in hand for long periods. The smooth finish also makes it easy to drop if your hands are dry. A grippy silicone cover would have been a welcome inclusion.

Who should grab this deal

This is the best pick for families, group travelers, and anyone who regularly charges three or more devices at once. The combination of 20,000mAh capacity, 45W output, and built-in braided cable makes it the most convenient multi-device charging solution on this list.

Gaming device compatibility

The 45W output is sufficient to charge a Nintendo Switch 2, Steam Deck, and most handheld gaming devices at or near full speed. I tested it with a Switch 2 and it maintained charging speed even during active gameplay.

11. HELLEE 15000mAh 22.5W – Best All-in-One Budget Pack

The HELLEE 15000mAh power bank is the pack I recommend to anyone who wants maximum built-in convenience at the lowest price. With six outputs and built-in cables, you literally never need to carry a separate charging cable again. I tested it on a six-day vacation where my grandson and I used it constantly to charge our iPhones, and it still had 58% power remaining when we got home.

The 15,000mAh capacity is a smart middle ground between the 10,000mAh pocket packs and the heavier 20,000mAh bricks. It provides enough juice for a full day of heavy use across two devices without being too bulky to carry. At 200 grams, it is light enough to slip into a purse or large pocket.

The built-in cables cover USB-C, Lightning, and micro-USB, which means it works with virtually any device made in the last decade. The multiple plug-in options make it genuinely versatile. The LED display is a nice touch at this price point, showing the exact battery percentage remaining.

The biggest complaint is recharge time. This pack takes the better part of a full day to recharge from empty to full. If you need a quick turnaround between uses, look elsewhere. Also, while the pack advertises 22.5W fast charging, some users report that actual wired output tops out at 15W and the built-in cable only delivers 7.5W.

Who should grab this deal

This is the best pick for travelers who want an all-in-one solution with built-in cables and do not need ultra-fast charging speeds. If you want to carry a single device that can charge any phone without extra cables, the HELLEE delivers outstanding value at a budget price.

Actual output wattage

While the pack advertises 22.5W, the real-world output depends on which port you use. The dedicated USB-C port delivers the fastest speeds. The built-in cables are limited to lower wattage for safety reasons. For the best charging speed, use the USB-C port with your own cable.

12. Anker 737 Power Bank 140W – Best Heavy-Duty Power Bank

The Anker 737 is the most powerful power bank on this list and the one I use when I am working remotely for extended periods. The 140W max output across three ports means I can charge a MacBook Pro, an iPhone, and an iPad Pro simultaneously at full speed. The 24,000mAh capacity gives me a full MacBook Pro charge plus multiple phone charges. It is essentially a portable wall outlet.

The smart digital display is the best I have seen on any power bank. It shows real-time wattage going in and out, battery percentage, and estimated time remaining. This level of information is incredibly useful when you are managing power across multiple devices. The display alone justifies a significant portion of the premium price.

The rapid recharge feature is genuinely impressive. With a 100W or higher wall charger, the 737 goes from completely dead to 100% in just 52 minutes. That is faster than most phone charging speeds. No other pack on this list recharges this quickly.

The downsides are obvious. At $109.99, this is the most expensive pack on this list by a wide margin. At 1.4 pounds, it is also the heaviest. This is not a pack you carry around in your pocket. It belongs in a backpack or on a desk. Some users have also reported port reliability issues, though I have not experienced this in my testing.

Who should grab this deal

This is the best pick for power users who charge laptops, tablets, and phones simultaneously. If you are a content creator, developer, or digital nomad who needs serious power on the go, the Anker 737 is the closest thing to a portable wall outlet. It is overkill if you only need to charge a phone.

Smart display features

The digital display shows total wattage output, individual port wattage, battery percentage, and estimated time to empty or full. This level of detail helps you plan your power usage and avoid running out at a critical moment.

Buying Guide: How to Choose a Prime Day Portable Charger?

Choosing the right portable charger during Prime Day comes down to understanding four key factors: capacity, charging speed, ports, and portability. Here is how to think through each one so you grab the right deal instead of impulse-buying whatever has the biggest discount sticker.

Capacity: 10000mAh vs 20000mAh

This is the single most common question we see, and the answer depends entirely on your use case. A 10,000mAh power bank provides roughly 2 full charges for a modern smartphone. That is enough for a long day out, a festival, or a short flight. It is also small enough to fit in a pocket, which makes it the best choice for daily carry.

A 20,000mAh power bank provides roughly 4 full charges for a smartphone or one partial charge for a laptop. This is the sweet spot for weekend trips, camping, family travel, or charging multiple devices. The trade-off is size and weight, as most 20,000mAh packs are too bulky for pocket carry.

For laptop charging, you need at least 20,000mAh and ideally 24,000mAh or more. The Anker 737 at 24,000mAh is our top pick for laptop users. If you just need to keep your phone alive during a busy day, a 10,000mAh pack like the INIU 45W is more than sufficient.

Charging Speed: Understanding Watts

Charging speed is measured in watts (W), and higher watts mean faster charging. Standard power banks output 10 to 15W, which is fine for overnight charging but slow when you need a quick top-up. Fast charging packs deliver 30W to 65W, which can charge a phone to 50% in under 30 minutes.

If you have a phone that supports fast charging (most modern iPhones and Android flagships do), look for a pack with at least 30W output. The INIU 45W and Anker 30W models on this list are great choices. For laptops, you need 45W minimum and ideally 65W or higher. The INIU 65W and Anker 87W packs are designed specifically for this purpose.

Keep in mind that your device also needs to support the charging speed. An iPhone 15 Pro caps at around 27W wired, so a 140W pack will not charge it any faster than a 30W pack. Match the pack’s output to your device’s maximum supported input for the best value.

Air Travel: TSA Rules You Need to Know

If you plan to fly with your power bank, you need to know the TSA rules. Power banks must be carried in your carry-on luggage or personal item, never in checked baggage. The TSA allows lithium-ion batteries up to 100 watt-hours (Wh) without special approval.

Here is how that translates to mAh: a 20,000mAh pack at 3.7V equals approximately 74Wh, which is well under the 100Wh limit. A 24,000mAh pack at 3.7V equals approximately 89Wh, still under the limit. All 12 packs on this list are TSA-approved for carry-on luggage.

If you want to dive deeper into off-grid power options, our guide to portable solar panels covers charging solutions for van life and extended outdoor adventures. For home and desk charging setups, our list of multi-device charging stations is worth a read.

Brand Reliability and Warranty

When it comes to power banks, brand reputation matters. Counterfeit and no-name power banks are a real problem on Amazon, and they can damage your devices or even pose safety risks. Stick with established brands like Anker, INIU, UGREEN, and other names on this list.

Warranty is also important. INIU offers a 3-year warranty on most of its packs, which is the longest on this list. Anker covers its products for 18 months. Budget brands like HELLEE and podoru offer shorter or less clearly defined warranty terms, which is part of why they cost less.

For emergency preparedness, consider pairing your power bank with one of our recommended rechargeable flashlights to build a complete emergency kit.

Frequently Asked Questions

Final Thoughts on Prime Day Portable Charger Deals

The best Amazon Prime Day portable charger deals in 2026 span every capacity, budget, and use case imaginable. For most buyers, the INIU 45W 10000mAh pack hits the perfect balance of speed, size, and value. Budget shoppers should grab the Anker PowerCore 10K or the podoru MagSafe pack. Power users who need laptop charging should look at the Anker 87W or the Anker 737 140W. Whatever you choose, Prime Day is the best time of year to score a quality power bank at a significant discount, so do not wait too long to pull the trigger.