A solar power bank is always useful if you are on the road for a long time and have no way to recharge it in between. For today’s test, we took a closer look at the AddTop solar power bank with 25,000 mAh.

Unboxing and appearance of the power bank

The solar power bank is delivered in a small box. The scope of delivery includes:

  • Solar Powerbank mit 25000 mAh
  • USB-C Kabel
  • operation manual

A power adapter for charging the device is not included. Here you have to use the power supply of your own smartphone.

The back of the power station is made of plastic. The individual solar panels, on the other hand, are each sewn into a leather cover, which gives a high-quality impression. The entire housing of the power bank is well made and waterproof, dustproof as well as shockproof. You click the solar panels to the housing with a push button.

You can still find it on the side small LEDsthat give you the current Show battery level. To activate the display, simply press the power button briefly. As soon as the 4 LEDs light up blue, the power bank is fully charged. You will also find another one below the LEDs. This LED lights up greenas soon as the power station charged via solar becomes.

The power bank also has one integrated LED flashlight. You can turn this on and off by using the Hold down the power button for 3 seconds.

Technical data of the solar power bank

solar cells 4 / 6W
battery type Li-Polymer
capacity 25.000 mAh
USB ports 2 x USB-A + 1 x USB-C
Entrance 5V⎓3A
Exit 5V⎓3A
Dimensions 15.7 x 9 x 3.5 cm
Weight 550g

What connections does the solar power bank have?

The AddTop solar power bank has 2x USB-A and 1x USB-C.

Solar power bank connections

You can charge the power bank via the USB-C port or on the go via the solar panel. You can charge other devices via the two USB-A or via the USB-C port.

How long does it take for a solar power bank to be full?

First of all, when charging the power bank via solar, you should note that the solar cells are best direct sunlight need. It also works through panes of glass, but direct sunlight is more effective when charging. Furthermore, it is advantageous if you Set up solar cells like thisthat the sun is in Angle between 25° and 30° shines on it. Depending on the solar radiation, it can take quite a long time for the battery to be charged to some extent.

How long does the battery last?

According to our test, one full charge of the power bank is enough for 8 charges of your smartphone. Tablets, on the other hand, usually have a larger battery, which is why you can expect 3-4 charges here.

The service life of the built-in LiPo battery can be several years. However, this depends heavily on use and storage. You can do one with your thumb LiPo Battery ca. 600-800 charging cycles anpeilen.

Cheaper alternative without solar

If you can do without the solar panel and are looking for a cheaper alternative, AddTop also offers one 26500mAh power bank on Amazon an.

The great Advantage of this power bank is that she’s over Power Delivery (PD QC3.0). With this technology it is possible to charge your smartphone with the appropriate power supply with a 22.5W fast charge. It is possible to charge your smartphone by up to 60% within 30 minutes. The power bank also shows you the current battery charge as a percentage on a small display.


The AddTop solar power bank is extremely well made and the integrated leather case makes a good impression. Charging via the solar panels works; but you should bring some time with you. The solar power bank does not have quick charging. But you can use the cheaper power bank from AddTop, which is impressive in terms of price/performance.

You can currently use the solar power bank from AddTop for 39.99 euros at Amazon kaufen.


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