Anker 548 power bank: power bank for notebooks with 192 Wh

Between the outdoor power bank and power station with display, solar connection and LED lamp, the Anker 548 power bank was convinced in the test. With two USB-C and two USB-A ports, it charges smartphones and notebooks with a total of up to 87 watts. A special feature is the long-lasting LiFePO4 battery with 192 Wh.

Anker 548 power bank

The Anker 548 Powerbank, also known as the Anker 548 PowerCore Reserve 192Wh by the company, is more than a simple power bank that almost everyone carries with them at least on vacation to be able to charge their smartphone in between. With the Anker 548 power bank, not only can the smartphone be charged several times, but the notebook and other USB devices can also be supplied with sufficient power outdoors and on the go. In order to complete the self-sufficient power supply, the Anker 548 power bank can even be recharged via solar energy on the go, for which it has an XT60 connection. With a display, an integrated LED light and power failure detection, it also offers other functions that make it a mix of power bank and power station.

The Anker 548 power bank is available at a recommended retail price of  ‎$169.99 on Amazon. It is also currently listed on Amazon at this price *. In addition, buyers receive a 60 cm USB-C to USB-C cable and instructions. The manufacturer grants a three-year guarantee.

The Anker 548 power bank in detail

15-cell LiFePO4 battery

Inside, the LiFePO4 battery consists of 15 cells with a capacity of 4,000 mAh each and thus comes to 192 Wh or 60,000 mAh (3.6 V), which, converted to 5 volts, results in around 43,500 mAh for charging a smartphone. These batteries ensure that Anker advertises the power bank with durability of 3,000 charging cycles until a residual capacity of 80 percent is reached. Normally, lithium-ion batteries are used in a power bank, which only lasts between 500 and 800 charging cycles up to a residual capacity of 80 percent.

It should be noted that a power bank with this capacity is usually not allowed to be carried on flights.

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Anker 548 power bankAnker 548 power bankamazon-icon-21121‎$169.99

With dimensions of 11.7 × 19.6 × 11.7 cm (W × H × D), it also weighs 2.35 kg, since a LiFePO4 battery is heavier than a lithium-ion battery. So it differs in every respect from the small 5,000 mAh power bank that you just put in your backpack or even your trouser pocket when you’re out and about. In order to be able to carry the Anker 548 power bank with you, it has a practical carrying handle made of fabric.

The connections of the Anker 548 power bank

What makes the Anker 548 power bank more of a power bank than a power station are its connections. It does not offer full-fledged Schuko sockets but relies entirely on USB. Two USB-C and two USB-A ports are therefore available for mobile devices such as smartphones or notebooks. The USB-A ports support Quick Charge 3.0 and deliver up to 18 watts. The two USB-C interfaces also master Power Delivery and can each provide a maximum of 60 watts individually.

  • 2 × USB-A, up to 18 watts – 5V/3A, 9V/2A, 12V/1.5A
  • 2 × USB-C, up to 60 watts – 5V/3A, 9V/4A, 12V/1.5A, 15V/3A, 20V/3A

USB Power Delivery PPS, as used by Samsung in many smartphones such as the Galaxy S23 Ultra, does not support the Anker power bank. That’s why smartphones like the Galaxy S23 Ultra charge with a maximum of 14 watts instead of the supported 45 watts via the USB ports. PPS stands for “Programmable Power Supply” and enables additional voltages that chargers normally cannot handle. Normal chargers with USB Power Delivery can handle 5 V, 9 V, 12 V, 15 V and 20 V, but with PD PPS it is also possible to access 13 V, for example.

The upper USB-C port is only used for power output, but connected devices can be charged via the lower USB-C port on the one hand, and on the other hand, this USB-C interface itself is used to charge. This is possible with a maximum of 60 watts (with 5 V/3 A, 9 V/3 A, 12 V/1.5 A, 15 V/3 A or 20 V/3 A). Anker does not include a power supply unit for charging the power bank.

The power distribution of the connections

It is interesting how the performance of the power bank can be distributed to the connections because charging both USB-C ports with 60 watts at the same time does not work.

The maximum combined output power of the Anker 548 power bank is 87 watts. However, it is only available if both USB-C ports are used. The following table shows which performance values ​​can be achieved with which configuration.

pinoutMaximum combined power output
USB C1 + USB C287 watts
USB-C1 + USB-A1/A278 watts
USB C1/C260 watts
USB A1/A218 watts
USB-C2 + USB-A1/A220 watts
USB A1 + USB A220 watts
USB A1 + USB A2 + USB C180 watts
USB A1 + USB A2 + USB C220 watts
USB-C1 + USB-C2 +USB-A1/A280 watts
USB-C1 + USB-C2 + USB-A1 + USB-A280 watts
ImageName & SpecsPlatformCheck Price
Anker 548 power bankAnker 548 power bankamazon-icon-21121‎$169.99

The first USB-C port is therefore always prioritized and devices such as notebooks should be connected to it if another connection is used at the same time, for example for a smartphone.

The Anker 548 power bank can easily be charged and discharged at the same time. However, charging via USB-C and XT60 cannot be combined to achieve a total charging power of 120 watts.

Capacity and efficiency in practical tests

Anker estimates the 548 power bank with a capacity of 192 Wh. However, losses occur when charging and discharging the batteries. How big they are is critical to efficiency. ComputerBase has therefore measured.

Usable energy of the Anker 548 power bank

continuous loadMeasured capacityefficiency
10 watts (5V/2A)179Wh93.23%
60 watts (20V/3A)178Wh92.7%
rated capacity192Wh

With an efficiency of around 93 percent, the Anker 548 power bank achieved a very good result in the test.

Losses also occur when charging the power bank. In order to charge the 192 Wh, an average of 230 Wh is required in the test of various power supplies that can permanently provide the maximum possible 60 watts. Accordingly, 19.8 percent more energy was consumed for charging than the nominal capacity of the batteries. However, it should be noted here that the power supply used always matters, since Anker does not supply its own. Depending on the efficiency of the power supply, the losses can be slightly larger or smaller. ComputerBase has nevertheless measured the consumption in front of the power pack, as this corresponds to everyday life.

The total energy loss due to charging and discharging is therefore around 23 percent.

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Anker 548 power bankAnker 548 power bankamazon-icon-21121‎$169.99

If you measure the charged energy behind the power pack at the input of the power bank, it is 213 Wh. Around 11 percent more energy has to be put in than the nominal capacity. The loss is then reduced to 16 percent – but the user also has to take into account the losses in the power supply unit.

Charge/discharge losses of the Anker 548 power bank

Rated capacityMaximum energy drawnEnergy required for charging (before power pack)Energy required for charging (behind power supply)loss (with power supply)loss (without power supply)
192Wh179Wh230Wh213Wh23%16%

Charging with 60 watts via USB-C1 took 3:39 hours in the test.

With LED and SOS button for outdoor use

But not only the carrying handle and the solar connection – which ensures that the Anker 548 power bank can be recharged with solar energy without needing a socket – are intended for outdoor use of the power bank. An LED lamp integrated into the top, whose white silicone cover can be folded out upwards, and the SOS button also make this approach clear.

The LED lamp is not implemented as a flashlight, but as an ambient light that provides light in the tent, for example. It can be regulated in two stages with 2 and 3 watts by pressing the button several times. In addition, brightness and radiation can be regulated by the height and angle of the white silicone.

With the SOS button, it is possible to use the LED to display the SOS signal, should this be necessary.

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Anker 548 power bankAnker 548 power bankamazon-icon-21121‎$169.99

Automatic light in case of power failure

In addition, the power bank has a power failure detection. If it is connected to the house network via a power supply unit via USB-C1, it recognizes when the power fails. An additional light sensor then detects whether it is light or dark. When it’s dark, the LED light turns on automatically to provide instant light at night in the event of a power failure.

Display shows battery status and performance

The Anker 548 power bank also has a display that not only shows the current charge level of the battery, but also the power currently being used by connected devices and the charging power of a connected power supply. In addition, the expected charging or discharging time of the power bank is displayed based on this data.

Conclusion

The Anker 548 power bank is positioned between a classic power bank for smartphones and full-fledged power stations with Schuko sockets and ultimately convinces with this initially unusual format.

If you have the freedom to choose your own workplace, the Anker 548 power bank is also an excellent companion in everyday life, allowing you to spend the day with your notebook and smartphone in the park or zoo and go about your work there without having to worry about a job socket and an empty battery to worry about. The Anker 548 power bank has even proven itself in the garden. Although a 10 m long extension cable and the notebook power supply unit would have helped here, the test simply used the Anker power bank and a USB-C cable and thus saved the notebook from automatically switching off on the garden table.

The integrated LED lamp has also already served well when camping and provided light in the dark.

The display is very well implemented, all important information is always in view and the carrying handle is simple, but just as useful and effectively implemented. There is also nothing to criticize about the processing. However, the Anker 548 power bank is not weatherproof, it must be protected from rain.

Although the 60 watts that the USB-C1 port delivers are sufficient for most notebooks in everyday life, the Anker 548 power bank would have looked good with an output power of 100 watts via a single USB-C port for more reserves. With a maximum of 87 watts in total, you can still charge your smartphone without any problems.

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Anker 548 power bankAnker 548 power bankamazon-icon-21121‎$169.99

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