After comparing tons of different batteries, we bought the 13 best portable chargers on the market in 2019 and compared their performance in a series of side-by-side tests to find the best. We compared and evaluated the portability and convenience of each one, as well as compared the actual capacity at real discharge rates using a digital multimeter and resistive load. We also looked for any other features or dual-functionality that made them easier to use and timed how long it took to recharge each one when they were completely dead. Keep reading to see which battery is the best of the best, which is the most portable, and which one wins when you need the most power.
Jackery Bolt 6000
: 6000 mAh | Maximum Discharge Rate
: 2.4A USB, 2.1A micro USB, 2.4A Lightning
Could be a little thinner
With a solid battery capacity, great recharge time, and features that make this power pack exceptionally convenient to use, the Jackery Bolt 6000 is the clear winner of the Editors' Choice Award and the title of Best Overall Portable Charger. This battery pack has enough juice for 1-2 full charges on most smartphones and is highly portable, easily fitting in a purse or backpack without issue. It retails at a great price and we found this power pack to be practically perfect, with only one exception.
The only slight issue we found with this pack is that it is a tiny bit on the thicker side. This product still fit in most pockets without issue, but you definitely noticed its presence and it could even be slightly uncomfortable, depending on how tight the cut of your pants are. However, this is a relatively trivial issue and we are thoroughly being nitpicky at this point. If you want the best of the best in the world of portable chargers, the Jackery should be the first option you consider and we highly recommend it.
Read Full Review: Jackery Bolt 6000
Anker PowerCore 5000
: 5000 mAh | Maximum Discharge Rate
Ultra fast recharge time
No additional convenience features
Finishing right behind the Jackery Bolt 6000 and costing about 30% less, the PowerCore 5000 easily claimed the Best Buy Award. This top-notch portable charger is supremely easy to carry in a pocket, has a solid capacity, and recharges exceptionally quickly. It packs a ton of power into a lightweight and compact package and is our top recommendation if you need a new battery pack and are shopping on a budget.
However, this battery back would definitely be considered bare-bones. It only has a single USB output that doesn't have the highest discharge rate and there aren't any built-in convenience features. Despite these omissions, the PowerCore
should be your first choice if you want a simple portable power pack without spending a ton of cash.
Read Full Review: Anker PowerCore 5000
Best on a Tight Budget
Aibocn Power Bank 10000
: 10,000 mAh | Maximum Discharge Rate
: 2.1A USB, 1A USB
No built-in cables or charger
If you are shopping on the tightest of tight budgets and want to spend the absolute bare minimum on a portable power pack, then the Aibocn is for you. This battery has enough juice for about 1-2 charges of most smartphones and is a good option if you want to get a few batteries to leave one at home, at work, or stash in your purse or backpack. It even has a built-in flashlight. However, you shouldn't expect too much from this product in terms of performance.
This battery pack should have gotten well over 2 charges on most smartphones and took substantially longer to charge than comparable battery packs, but if you want a cheap charging solution, the Aibocn is a solid choice.
Read Full Review: Aibocn Power Bank 10000
Top Pick for Most Portable
Anker PowerCore+ mini 3350
: 3350 mAh | Maximum Discharge Rate
Slow charge rate
Doesn't have the most capacity
If you want the lightest and most portable power pack around, then look no further than the PowerCore+ 3350 by Anker. This pint-sized power pack is the perfect option for anyone that wants an ultralight charging solution. This little battery can fill up most modern smartphones to about 75% if they are completely dead, ensuring that you never get caught with a dead phone. This battery is the perfect option for hiking or biking, giving you a backup power source for your phone in case you need to make a call or for going out on the town, as it is compact enough to discreetly carry with you and make sure that you have enough juice to call an Uber or Lyft to get home.
However, this battery doesn't charge your phone particularly quickly, being limited to a 1 amp discharge rate. It also doesn't include any integrated cables, so you do have to carry a charging cable with you as well, adding both bulk and weight. It also takes a surprisingly long time to recharge for being such a small capacity battery. Despite those flaws, it is still the best by far for anyone who values portability above all else, earning it the Top Pick for Most Portable award.
Read Full Review: Anker PowerCore+ mini 3350
Top Pick All-In-One
RAVPower Ace 6700 (RP-PB125)
: 6700 mAh | Maximum Discharge Rate
: 2.4 A per port, 3 A total
Can be bulky to carry
Didn't do the best in our capacity test
On its merits as a portable charger alone, the RAVPower ACE 6700 doesn't necessarily stand out from the rest of the group. It's not the most portable and didn't really impress when it comes to value or capacity. The ACE does stand out by being one of the most convenient to use portable chargers and by having dual-functionality. This battery has a built-in wall plug that folds out, making it super easy to recharge. On top of that, you can also plug in a device while the ACE is plugged into a wall, as it has pass-through capabilities and can act as a USB wall adapter. This helps to consolidate the number of electronics you need and is great for anyone who wants a minimalist approach to charging.
Regrettably, its square profile can be a bit be a bit more cumbersome to carry in a pocket compared to batteries that have a slimmer aspect ratio. It also didn't do particularly well in our capacity tests, but it is a great option if you want to consolidate charging options.
Read Full Review: RAVPower Ace 6700 (RP-PB125)
Top Pick for Maximum Capacity
Anker PowerCore+ 26800 PD
: 26,800 mAh | Maximum Discharge Rate
: 3.4 A shared among two USB-B, 3 A for USB-C PD port
Great for high power devices
Recharges exceptionally fast
On the more expensive side
If you have tons of devices to charge or need to charge power-intensive devices, like the newest MacBooks or a Nintendo Switch, then you should consider the Anker PowerCore+ 26800 PD. This is one of the biggest batteries that we have tested and is compatible with the newest Power Delivery USB standard, letting you charge the newest devices at their maximum rate. It can charge most newer phones five or six times and recharges extremely quickly when using its dedicated wall power adapter.
However, this battery is definitely on the larger and heavier side, solidly stretching the definition of portable — at least when it comes to carrying it around in a pocket. It's not too bad to lug around in a laptop bag if weight isn't too much of a concern. The PowerCore+ 26800 is also a little on the more expensive side, but it's our top recommendation for anyone that needs to get a ton of charges out of their battery or for anyone who wants to charge larger devices properly.
Read Full Review: Anker PowerCore+ 26800 PD
Compare Top Products
Displaying 13 Products
Some of the different portable chargers currently available.
Why You Should Trust Us?
Both Austin Palmer and David Wise have extensively tested and compared hundred and hundreds of different consumer tech products over the past few years and are necessarily familiar with all of the different ways to charge devices over USB. In addition to their experience and background testing and reviewing tons and tons of different products for TechGearLab, David has formal training as a mechanical engineer and specialized in designing and building electric vehicles and the electronics system for underwater robots, which came into play when determining our portable charger testing procedure. We also consulted with a handful of other mechanical and electrical engineers when it came to designing our testing plan.
We charged everything from a Nintendo Switch to drone batteries with these products, comparing their performance side-by-side. Along with charging actual devices, we also used a dummy resistive load and a digital USB multimeter that we could set for different discharge rates to objectively compare the capacity of each battery under more realistic use conditions and timed how long it took each one to recharge. Along with the set of electrical tests, we also measured the weight of each battery and compared how easy they are to carry in a pocket, as well as awarded extra points for any extra features and functions.
Related: How We Tested Portable Chargers
A portable charger is a great way to ensure you never get caught with a dead phone.
Analysis and Test Results
In our quest to find the perfect — or as close to perfect as possible — portable charger, we conducted extensive research, then picked out the portable power packs that showed the most promise, and then purchased them to test head-to-head. We divided our testing procedure into four weighted rating metrics — Portability, Added Convenience, Capacity, and Recharge Time — with our results discussed below.
Related: Buying Advice for Portable Chargers
Right off the bat, three products stand out if you are shopping on a budget. The Aibocn is one of the least expensive options out there, but we weren't overly enamored with its performance. The Anker PowerCore 5000 costs a bit more, but is a much more portable pack, with better capacity and recharge time, but it lacks the built-in flashlight of the Aibocn and only has a single USB output port, compared to the Aibocn's two. The PowerCore+ mini 3350 costs about the same as the 5000, but you sacrifice some capacity for extreme portability. Our top overall scorer comes with another jump in price, but the Jackery Bolt 6000 is our top recommendation for most people and we vastly preferred it to some of the less expensive options. You may also want to consider the RAVPower Ace 6700 if you are shopping on a budget, as it has the ability to function as both a portable charger and a USB wall adapter in pass-through mode, negating the need to buy a separate wall adapter and saving you a few bucks in the process. Finally, the Anker PowerCore+ 26800 PD is your best bet if you need maximum capacity and the ability to charge larger devices, but comes with a proportional increase in price.
Accounting for 40% of the final score, it's easy to see why portability is of vital importance to these products, as it is literally in the name of this category of products — portable chargers. In fairness, all of these products are ostensibly portable, with all of them weighing less than a pound and are quite compact, making them almost unnoticeable in a purse, backpack, or laptop case. However, we did notice some stark differences when attempting to carry these around in a pocket, which is what the majority of the score is based on. Additionally, we also awarded points based on the measured weight and volume of each battery pack.
Earning a perfect 10 out of 10 in this metric, it is easy to see why the Anker PowerCore+ mini 3350 is our top pick when it comes to being the most portable. This pint-sized portable power pack is only a bit larger than a lipstick case and is exceptionally easy to carry. It weighs in at a measly 2.88 ounces and measures less than an inch in diameter and about 3.75" in length, making it easy to slip into almost any pocket if you need power on the go.
Following the mini 3350, the PowerCore 5000 by Anker is the next most portable battery that we have tested, earning it a 9 out of 10. This battery is both one of the most compact and lightweight that we tested, but is a bit larger than the 3350, weighing in at about 4.71 oz. and having a cylindrical form factor about 1.3" in diameter and 4.3" long. However, it was the incredible ease of carrying this in a pocket that boosted this to the top spot. We particularly liked that it was easy to access the output port and plug a cable in while it is in your pocket, allowing you to carry the battery in one pocket and charge your phone in the other, running the cable around your waist.
The PowerCore 5000 is one of the easiest to fit in a pocket.
Following the PowerCore 5000, both the PowerCore II Slim 10000 and the Jackery Bolt 6000 came next, each meriting an 8 out of 10. The Jackery has a slightly more compact form factor than the PowerCore II Slim, but is a bit larger than the PowerCore 5000. The Jackery Bolt 6000 and the PowerCore II Slim are both heavier than the PowerCore 5000, weighing 5.67 oz. and 7.42 oz., respectively.
Both of these are quite easy to carry around in your pocket, with the Anker PowerCore II Slim 10000 having a slight edge on the Jackery Bolt 6000, by being slightly — you guessed it — slimmer, per its name.
The PowerCore II Slim also fits quite well in a pocket.
The RAVPower Ace 6700 is next when it comes to portability, meriting a 6 out of 10. This charger isn't particularly heavy, but it has an overall square form factor which makes it a bit harder to carry in most pockets. It will still fit, but can just feel a bit bulkier than many of the longer and slimmer products.
Next, there was quite a bit of a drop in performance, with the Aibocn Power Bank 10000 and the OtterBox Power Pack 10000 both earning a 5 out of 10 for their portability. These both are quite a bit larger in terms of volume and both weigh about 8.5 oz. The OtterBox fit in the front pocket of a pair of regular cut men's jeans without too much issue, but it definitely is a bit cumbersome and quite noticeable. However, we wouldn't count on it fitting in a pair of slimmer cut jeans.
The ruggedized OtterBox has a much taller profile.
The Aibocn is a little smaller, but a fraction of an inch thicker, giving it a similar fit to the OtterBox. However, its output ports are on the side, making it essentially impossible to plug a cable into it while it is in your pocket.
A group of portable chargers came next, with the Anker PowerCore Speed 20000, the RAVPower Deluxe 16750, and the Tzumi 12000 all earned a 4 out of 10 for their overall lackluster portability. None of these are particularly comfortable to carry around in your pocket while sitting down, front or back pocket, but the PowerCore Speed 20000 isn't too bad to walk around with, though it is far from our favorite.
The larger batteries are much more suited to being carried in a bag than a pocket.
However, the PowerCore 20000 is the heaviest of this group, weighing in at 12.72 oz., with the rest of them shown below.
Next, the RAVPower Ace 22000 earned a 3 out of 10. It weighs just an ounce shy of a pound, but its narrower aspect ratio makes it actually not too bad to carry in a back pocket.
This giant battery barely fits in most front pockets.
However, the weight is definitely noticeable and we usually found it preferable to carry it in a bag rather than a pocket.
Rounding out the back of the group, both the Anker PowerCore+ 26800 PD and the RAVPower Super-C 26800 both tied for being the least portable of the group, earning a 2 out of 10. These both weigh over a pound — with the Anker weighing about 4 ounces more than the RAVPower.
These both are a little over 3" wide and about 7" long, so they are definitely too big to easily carry around in a pocket, but aren't that cumbersome if you can carry them around in a purse or laptop bag.
Some of the electrical meters and dummy loads we used to test these products.
For our next set of tests, we moved on to assessing and scoring the capacity of each battery pack, which accounts for 30% of the overall score. We scored each battery pack on how much power it actually output at its maximum discharge rate, relative to it rated capacity, as well as how various manufacturers' claims, such as being able to charge a certain phone a certain number of times, stood up to actual testing. We used a dummy resistive load set to draw power at the maximum rate from each battery pack and a digital multimeter to measure exactly how much electricity was put out by each pack. This is a bit of a torture test and no pack even came close to its listed capacity. Our final results for the capacity tests of each portable charger are shown below.
Tying for the top spot, both the Jackery Bolt 6000 and the RAVPower Ace 22000 earned a 7 out of 10 when it comes to capacity. The Jackery got off to a great start, exceeding the manufacturer's claim of being able to charge an iPhone 6/7/8 twice, charging the phone twice and getting it up to 40% on a third time before the pack died. The Ace 22000 is claimed to be able to charge a Galaxy S8 4.4 times, which it also exceeded in our tests, charging it 5.3 times.
The Jackery also did quite well in our discharge test using the load resistor. We set it for a 2.4A discharge rate, which, unfortunately, the Jackery could only sustain for about an hour and a half before the voltage began dropping to the point where it turned off. We dialed the load back to 1A and it lasted for another 20 minutes or so. In total, we pulled 3897 mAh out of it before it quit — about 65% of its stated claim.
The Ace 22000 performed similarly, as we were able to pull about 66% of its rated capacity out at a 2.4 A rate before it died.
Following this duo of top performers, the PowerCore 5000, the PowerCore+ 26800, the OtterBox Power Pack, the PowerCore Speed 20000, and the Tzumi Endurance all earned a 6 out of 10.
Both the Anker PowerCore 5000, PowerCore+ 26800, and the PowerCore Speed 20000 slightly exceeded their marketing claims, charging a Samsung S8 1.12 4.48, and 6.11 times in our tests, each getting about 10% more charges than their claimed max. The OtterBox didn't really have a claim similar to the Anker portable chargers, so we tested it against the Anker PowerCore II Slim 10000's claims, as they are comparable power packs. The OtterBox exceeded this standard, charging the phone 2.49 times, compared to the 2.2 times claimed by the PowerCore II Slim 10000.
The Tzumi 12000 just barely fell short of its advertising claims, missing it by 0.5 charges.
The Tzumi was a bit of a disappointment in our discharge tests.
For our discharge test, the OtterBox came out on top, discharging 67% of its listed capacity. We used a 2.4A discharge rate for as long as we could, but had to drop it down a bit after a while to keep it from resetting. This was followed by the Tzumi and the PowerCore 5000 at 65%, the 26800 PD at 62%, and the PowerCore Speed 20000 at 61%. We ran all of these at 2.4A until they died, though the PowerCore 5000 did need its discharge rate dropped a bit right at the end to keep from resetting.
Following this group, the Anker PowerCore II Slim 10000, the PowerCore+ 3350, the RAVPower Super-C 26800, and the RAVPower Deluxe 16750 came next, all receiving a 5 out of 10 for their performance in our capacity tests. We managed to get just under 60% of their claimed output at a 2.4 amp discharge rate, with the exception of the Mini 3350, which can only have a maximum output of 1 amp. We did manage to pull 58% of the Mini 3350's stated capacity out, but only at a 1 amp rate. The Anker PowerCore II Slim 10000 output 5892 mAh, or 59% of its stated amount, before dying, though we did appreciate that it maintained a steady 2.4A discharge rate the entire time.
We weren't able to even get close to the claimed capacity in our test.
The RAVPower Deluxe 16750 output 9654 mAh, or 58% of its capacity and also maintained a 2.4A discharge rate, with the Super-C doing just a tiny bit worse, as we were only able to pull 57% of its stated capacity out at this high discharge rate.
The RAVPower Ace 6700 and the Aibocn Power Bank both finished out the back of this group, earning a 4 and a 3 out of 10, respectively. The Ace 6700 only managed to output 51% of its stated capacity at its maximum discharge rate, but this did increase to 59% at a lower 1 amp rate. However, it did meet its manufacturer claim regarding phone charges.
The Aibocn didn't have any specific claims regarding phone charges, but it fell a bit short of comparably sized packs' claims, only charging a Samsung S8 1.7 times, rather than the 2.2 times other 10,000 milliamp-hour packs could. We also only pulled 39% of its stated capacity out of the battery using our dummy load set for its maximum discharge rate before the battery died.
The integrated wall plug on the Tzumi is quite handy.
Next, we moved on to evaluating and judging how convenient to use each portable power pack is, namely, if there are any features on any of the power packs that made them significantly more expedient and favorable to use. We looked at if you could charge multiple devices at the same time, if there is a built-in flashlight or built-in cables, and if there is an integrated method to recharge the battery, as well as the included warranty. Overall, this metric is responsible for 20% of the total score for each portable charger, with our results shown below.
The Jackery Bolt 6000 and the RAVPower Ace 6700 tied for the top spot in this test, both earning a 7 out of 10. The Jackery can charge multiple devices at once, using the built-in lightning and micro USB cables, as well as the standard USB output port. We found these built-in cables to be super convenient to use, making for an extremely compact package that even includes a built-in flashlight.
The Jackery Bolt is one of our all-time favorite chargers.
This battery pack also has a 24-month limited warranty, but you do need to use the included micro USB cable to recharge the battery pack, using a wall power brick or other powered USB port.
The ACE doesn't have a built-in flashlight or cables for charging devices, but it does have an integrated wall plug for recharging. On top of that, the battery can also function as a pass-through when plugged into the wall, doubling as a USB wall adapter and solidly boosting its overall convenience. It can charge multiple devices at a time and has the standard four-LED battery indicator. It also includes an 18-month warranty that can be extended for an additional 12 months if you register the charger.
Following this top pair, the Tzumi, the Anker PowerCore+ 26800 PD, and the RAVPower Super-C 26800 came next, each earning a 6 out of 10. The Tzumi can charge multiple devices, with up to 3.4A of shared output and has an integrated wall charger. However, it lacks any built-in cables and does not have a flashlight. It does include a micro USB cable and has a 1-year limited warranty.
The PowerCore+ 26800 and the RAVPower Super-C don't really have any integrated features, but they both can charge multiple devices at the same time and have the standard battery level indicators. Their warranties are both comparable and they each earned some extra points for having USB Power Delivery capabilities, which means that both can function as an all-in-one charging solution for devices as more and more newer products adopt this standard. This also means that they can charge large devices, like a Nintendo Switch or a new MacBook, that other batteries can't.
A group of portable batteries came next, with the RAVPower Ace 22000, the RAVPower Deluxe 16750, the Anker PowerCore Speed 20000, and the Aibocn Power Bank 10000 all earned a 5 out of 10. None of these portable charges have an integrated re-charging solution or any built-in cables, though the pair of RAVPower products both include two micro USB cables, compared to the single cable included with the Anker or the Aibocn.
The carrying sleeve included with the RAVPower Ace.
These four portable chargers can all charge multiple devices, but only the RAVPower Deluxe has an included flashlight.
Next, the OtterBox Power Pack 10000 merited a 4 out of 10 for its less than average convenience factor. This charger lacks any integrated functions — no built-in flashlight, recharge, or charging methods — and can only charge a single device at a time. However, it did redeem itself a tiny bit by including a single micro USB cable and a lifetime limited warranty.
Rounding out the back of the group for this set of tests, the Anker PowerCore 5000, the Anker PowerCore+ Mini 3350, and the Anker PowerCore Slim 10000 all merited a 3 out of 10 for their bare-bones nature. These portable chargers lack any integrated convenience features and can only charge a single device at a time. They come with an 18-month limited warranty and each includes a micro USB cable.
The largest batteries took a surprisingly long time to recharge.
For the final 10% of the score for each portable charger, we looked at how long it took to recharge each of these batteries. This testing process was quite simple — we timed how long it took for a completely dead portable charger to fully recharge, using their LED indicator lights as a gauge. To power each power pack, we used either the included micro USB cable with a Samsung Quick Charge wall adapter or the integrated charging plug if the charger had it.
The Anker PowerCore 5000 earned top marks for this metric, meriting a 10 out of 10 for the 150 minutes it took to completely recharge. This was followed by the Jackery Bolt 6000 with a 9 out of 10 for its 195 minute recharge time and the Aibocn, RAVPower Ace, the PowerCore+ 26800 PD, and the Anker PowerCore II Slim 10000, all earned a 7 out of 10. You can see all of their respective charge times, as well as the rest of the group in the chart below. This was using the included fast charger with the Anker PowerCore+ 26800, otherwise, it would score much lower as it takes quite a bit longer to recharge with a standard charger.
The OtterBox Power Pack, the Anker PowerCore+ Mini 3350, and the RAVPower Deluxe came next, earning a 6, 6, and a 5 out of 10, respectively. The PowerCore Speed 20000 and the RAVPower Ace came next, both earning a 4 out of 10 and each taking about 485 minutes to charge.
Finishing in the second to last place position, the Tzumi 12000 took a whopping 695 minutes to charge — even though it only has a moderate capacity — earning it a 2 out of 10, which only was faster than the 700 minutes the RAVPower Super-C took to recharge.
At this point, you should have a pretty good idea which battery pack is the best bet for you, whether you want the maximum capacity, the one that is the most convenient to use, or the battery that gives you the most bang for the buck.