Review: ChargeTech – 27,000mAh Portable AC Battery Pack

ChargeTech - 27,000mAh Portable AC Battery Pack









  • Very High Capacity that can last for days or even weeks
  • It can charge 3 up to devices all at once
  • There's a AC Outlet that can power up to 85Watts


  • Big and Heavy at 2.4 Pounds, so it's meant to be set down and used
  • The Max USB Output is 2.4 Amps
  • The Max AC Outlet Power is 85Watts and is mainly usable for small applicances
(Last Updated On: November 23, 2020)


AC Outlet power banks is a growing way to not only charge devices but it’s a great way to power devices as well. These kinds of chargers can be more than just being able to provide charging power to your smartphone or tablet.

Instead, they’re also able to act as a portable wall outlet with their built-in AC outlets. With this kind of tech, the freedom of taking your laptop and sitting freely anywhere in the library or perhaps taking it camping is where this kind of charger performs best.

There’s such a need for this kind of power, and when we don’t have it, it can make our experiences fall short of greatness.

This is the ChargeTech 27,000mAh portable power bank. It has quite a bit to boast about, but let’s find out if it’s all, not just a bluff.

Similar AC Power Banks:

RAVPower 27,000mAh AC Outlet Power Bank Review



Power Capacity:

The power capacity is 27,000mAh and with Panasonic batteries being used, we’re confident that you’re going to be receiving close to that power. The charging speed you receive for the device you’re charging will determine the real power capacity that you’re able to get.

With that said, though the charging speed out of the two USB Ports is combined to be the only 2.4A, and AC Outlet can Output or rather power 85W.

So if you’re charging from either USB port, it won’t do much to the power capacity, because the Amperage current will only be at a possible max of 2.4A and that will not generate too much heat to provide a poor conversion rate.

Altogether if considering the usage of the USB ports and the AC Outlet at the same time, the Output power capacity that you’d be receiving would be 24,000mAh. Of course, that’s still a rough estimate because it will wholly depend on your usage of the power bank.

With that said, the power capacity from using the USB ports should provide you with enough power capacity to charge smartphones 5 times or more; plenty more times if you have a smartphone with a small battery capacity. Tablets can charge about 2 times, but that’s usually the case if you’re taking advantage of the entire power capacity.

DevicesChargeTech - 27,000mAh Portable AC Battery Pack (Output Capacity = 24,000mAh)Phone CapacityChargeTech - 27,000mAh Portable AC Battery Pack Left Over Capacity after One Charge

# of Full Charges for the Device
iPhone SE24,000mAh1,624mAh22,376mAh

14.7 Full Charges
iPhone 624,000mAh1,810mAh22,190mAh

13.2 Full Charges
iPhone 6 Plus24,000mAh2,915mAh21,085mAh

8.2 Full Charges
iPhone 6s24,000mAh1,715mAh22,285mAh

13.9 Full Charges
iPhone 6s Plus24,000mAh2,750mAh21,250mAh

8.7 Full Charges
Samsung Galaxy S624,000mAh2,550mAh21,450mAh

9.4 Full Charges
Samsung Galaxy S6 Edge24,000mAh2,600mAh21,400mAh

9.2 Full Charges
Samsung Galaxy S724,000mAh3,000mAh21,000mAh

8 Full Charges
Samsung Galaxy S7 Edge24,000mAh3,600mAh20,400mAh

6.6 Full Charges
Samsung Galaxy S8+24,000mAh3,500mAh20500mAh

6.8 Full Charges

AC Outlet: 3 Prong Outlet


It’s basically like taking a wall outlet with you on the go. This AC Outlet can take a 3 prong plug, so you can use either or 3 prong devices or 2 prong ones to use with the outlet.

Although that’s true only if the power bank can power the device you’re connecting it to. The main thing to consider is the AC Outlet’s power delivery and how much Watts the device that you’re connecting the power bank to requires in order function.

To give you a general idea, 85Watts is going to be able to power small appliances like small fans, hair straighteners, a video game console like the Wii or Xbox One, and a Laptop charger being the most used device to use with the AC outlet.

So it’s important to know what devices you want to use with AC Outlet and more importantly whether or not they are being powered at 85 watts or lower. Anything over 85W and the AC Outlet will be rendered useless.

Two USB Outputs: Max Output 5V/2.4A

There are two USB charging Output ports with this power bank and it sounds really good but unfortunately, the max output of both of the ports combined is 5V/2.4A. Don’t be fooled by what ChargeTech has written on their website or the Amazon page.

The charging output is shared between both of the USB ports, so if you plug a tablet into one port and a smartphone into the other port, the tablet will not be charging at its max speed since power is being pulled to the smartphone as well.

If you want to charge a tablet like an iPad at max speed, then we recommend charging the iPad alone; this way, the iPad will be able to draw the full 2.4 Amp current.

If you’re charging two smartphones using the USB ports, then you can most likely expect both of the smartphones to take 1.0A or 1.2A to be more precise. However, it’s best to connect just a single phone even in this case because most smartphones nowadays can charge beyond 1.0A charging speed.

Input Charging: 20V/2A

The power bank doesn’t use the traditional Micro-USB Input port to recharge, instead, you have to charge it with a DC power cord that comes with the power bank charger. So even though the recharging can’t be done using a Micro-USB cable that is rather universal and you can easily get one nearly anywhere.

Charging with the DC cord is an overall much better way to recharge the power bank.

This is because the Input is at 20V/2A. This charging is great because the high voltage ensures that the Amp current is almost always constant during the recharging process and as a result, you can expect the power bank to be fully recharged in 2.5 hours. For a power bank with 27,000mAh of power capacity, this type of charging is very welcomed.


Size and Weight

With its power capabilities, of course, this AC power bank is going to be large and quite heavy. The length of the ChargeTech power bank is 7.5 inches, 5.2 inches in width, and 1 inch in thickness.

So it’s the size of a tablet in terms of length and width. It’s on the heavy side at a weight of 2.4 pounds. So to be clear if you haven’t gotten the idea yet. This power bank is NOT meant to be held and used.

You’re mainly supposed to set it down and use it. This goes for charging a smartphone, tablet, and especially if you’re using the AC Outlet.

If you’re taking it somewhere, you could just hold it on your way to your location or put it into a bag for more convenience. Even though the charger is large and heavy, it’s your best bet to be able to get portable power through an AC outlet in a comfortable location.

The main purpose of this charger being made was so that you don’t have to be stuck to wall outlets. It solves the problem by practically making this a portable wall outlet (Only if you’re charging a device that can draw 85Watts or less!).

Anker PowerHouse 120,000mAh

Functional Components

The functional parts of the AC power bank are mostly on a single side. One side of the charger has the 3 prong AC Outlet, a light to indicate the AC outlet is on, a switch to turn on the AC Outlet, And 2 USB charging ports. On top is the power button and 4 LED power capacity indicators.


This power bank must be turned on to begin charging and you can press the power button to turn it on. Once on, the USB charging ports illuminate a blue color within them regardless of them having a cable inside them or not.

The charger does not stop charging once a device has charged fully through the USB ports, so if you want to save power capacity you have to remove the device from the USB port.

This kind of design somewhat shows the power bank’s age and how it should implement Over-Charging Protection because this way more power capacity would be saved.

AC Outlet has a Switch Button

You have to turn on the AC Outlet to use it and we find this to be a good idea since it would dangerous to have the AC outlet on at all times. To turn on the AC Outlet, you simply switch it to “On” and then a Red vertical light comes on next to the AC outlet to show that it’s ready to use.

Putting it all together, this isn’t exactly a “Portable power bank” in the way that many power bank chargers are. Don’t get us wrong, though, of course, this is meant to be portable; just not portable as in walking around with it freely. It has a pretty good design, just needs an auto-off feature so there’s no worry about turning it off manually.


Structure and Material

This large and heavy power bank has quite a few separated parts and it’s all made of plastic. Although it’s all really solid. There aren’t any parts that can come loose and all the functional parts of the charger are depressed into the power bank so nothing is sticking out.

Of course just a bit of a warning, though; dropping the power bank is not something that should be taken lightly. When you have something as heavy as this (at 2.4 pounds) then something inside or outside of it is bound to get damaged because the shock from the heavyweight will damage it.

It may look physically tough, but it’s not a rugged power bank built like RAVPower’s Rugged charger or EasyAcc’s.


On the inside is where there are a few issues. ChargeTech hasn’t disclosed what kind of safety tech they have implemented with this AC power bank, but we’re pretty sure that there’s the usual Short-Circuit Prevention and Current Control. Otherwise, the power bank would be damaged after a few uses.

Of course, there’s the use of Panasonic cells that make the conversion quite good and the batteries can last for more charge cycles.

With that said, the charger can heat up if it’s being used heavily and as a result, you’ll be getting less Output power capacity.

OmniCharge Portable Power Supply



This power bank is highly reliable if you’re mainly purchasing it to use the AC Outlet.

It’s a harsh thing to say but that’s the truth. Sure, the charger does have 2 USB charging ports but the Max Output of both USB ports put together is only 2.4A and that’s not very much power if you’re charging two devices at the same time.

Some might say that the power capacity is a lot and that’s true. The power capacity can very well last you days or even weeks but the charging speed that you’re receiving right then and there matters a lot too.

Also, you must use a device that is only able to draw 85Watts or less when you’re using the AC Outlet. Anything that needs more power is going to make the AC Outlet useless.

So you should know what you’re going to use with this AC outlet that this power bank has, as a way of ensuring that you’re able to use the charger’s main feature. It may be described as a portable wall outlet, which is true to an extent but it’s not of the same powering capabilities.

Jackery Power Pro



The power capacity is really impressive at an approximately 24,000mAh Output power that can last for days or even weeks. The USB charging is disappointing and will only be able to provide 2.4A Max Output. The AC Outlet can take either 2 or 3 prong plugs, but can only power devices up to 85W or lower.


It’s about the size of a tablet and is heavy at 2.4 pounds. To put it simply, you gotta put this thing down to charge comfortably.

The lack of the USB port’s ability to stop charging when a device is fully charged is obsolete. The power bank must be turned on to use the USB ports and once on, the AC Outlet must be turned on via a switch.

The USB ports have a blue light that’s illuminated inside of them and the AC Outlet has a Red light next to it to indicate that it’s on.


The power bank is separated into quite a few pieces that are all made of plastic. However it holds strong, but just don’t drop it because the amount of shock may very well damage the power bank.

The use of Panasonic battery cells is welcome as it provides a better conversion rating and longer-lasting batteries. The charger does heat up if you’re using it heavily with the AC Outlet and the USB charging ports together.


It’s at its most reliable when you’re using the AC Outlet. You can use the USB charging ports but that’s not the main thing that this power bank can provide. The main thing is to use the AC Outlet with a device that can be powered from it. If you’re only using the USB charging ports, then you’re only relying on half the capabilities.

More AC Power Stations

Specs of the ChargeTech – 27,000mAh Portable AC Battery Pack:

  • Power Capacity: 27,000mAh
  • Output:      USB Charging Ports Max Output: 5V/2.4         AC Outlet: 85 Watts
  • Input: 20V/2A via DC Cord
  • LED Power Indicators: 4 LED Power Capacity Indicators
  • Size: 7.5 x 5.2 x 1 inches
  • Weight: 2.4 Pounds


Power banks with AC Outlets are good but they’re not the best in terms of what you’d think they’d provide. Sure, they have an AC Outlet but the main mistake is thinking that the AC Outlet has the same powering capabilities as a wall outlet, but it doesn’t.

In this case, the ChargeTech AC Outlet power bank does a good job of providing just enough power through its USB charging ports and a good amount of power through its AC Outlet of 85Watts to provide for your needs. You can’t go overboard with it but it’ll do just fine if you know how and what you want to use it with.

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