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The power output is measured in watts (W) and its an important factor when it comes to fast charging. The majority of smartphones that have fast charging require 18W of power to achieve the max charging speeds. If your power bank cant provide that, then your smartphone will take longer to reach a full charge.

The direction of the panels is extremely important as it decides the efficiency and the performance of the panels. Wrongly installed panels will either function in an improper way or not function at all. Solar panels are conventionally installed facing south. This is because the southern direction receives the most amount of sunlight.

When it comes to ports, you should know that the newest standard is the USB type C port, which, in time, will replace the older USB type A and micro USB ports. So our advice is to look for power banks that are based primarily around USB type C ports. Besides the classical USB type A and USB type C ports, some power banks come with other types of ch

If you are just the occasional power booster, a more compact and lower capacity power source is right up your alley. Anything from the 5000-2000 mAh in a power bank will work best for you, but you must remember you will more than likely not have multiple options for power included with a smaller device.

It is important to know that not 100% of the power banks capacity is transferable to your phone. Due to inefficiencies in charging and other factors, only around 2/3 of the capacity can actually be used. You can read more on this subject here. You might also want to read this article on how many mAh you actually need to charge your phone.

More powerful devices such as gaming consoles or laptops require larger amounts of power. So if you want to also be able to charge your laptop while using it, youll most likely need a portable charger capable of supplying up to 100W of power.