When shopping for a portable charger, there are several factors to consider in order to find the best option for your needs. In this article, we will discuss the importance of capacity, charging speeds and standards, pass-through functionality, and travel restrictions when choosing a portable charger.
Capacity is an essential feature to consider when selecting a portable charger. It is measured in milliampere-hours (mAh) and refers to the amount of power the power bank can hold. However, it’s important to note that the actual power output depends on factors such as the charging cable, the device being charged, and the charging method. Qi wireless charging, for example, is typically less efficient compared to traditional wired charging methods. Therefore, it’s crucial to understand that you may not achieve the maximum capacity stated by the manufacturer. To provide you with a better understanding of the charger’s capabilities, many manufacturers offer estimates of the number of charges a specific device can receive from the power bank.
Charging speeds and standards are also significant factors to consider. The charging rate for devices like smartphones is typically measured in watts (W), while power banks often list the voltage (V) and amperage (A). To calculate the wattage, simply multiply the voltage and amperage. However, achieving the maximum charging rate depends on multiple factors, including your device’s compatibility with the charging standards supported by the power bank and the type of charging cable used. For instance, Apple’s iPhones support the Power Delivery (PD) standard, which allows for high-power charging using compatible power banks. On the other hand, Samsung’s Galaxy S range supports not only PD but also a supplementary PD protocol called PPS (Programmable Power Standard), which enables charging at up to 45W. Additionally, Qualcomm’s Quick Charge (QC) standard is supported by many smartphones. It’s worth noting that some smartphone manufacturers have their own proprietary fast-charging standards, which may only work optimally with their own power banks.
Pass-through functionality is a feature that allows you to charge your power bank while simultaneously using it to charge another device. Not all portable chargers offer this feature, so if it’s something you require, it’s essential to ensure that the power bank you choose supports pass-through charging. However, it’s important to exercise caution when using this feature, as it can cause the power bank to cycle on and off rapidly, potentially shortening its lifespan. Several reputable brands, such as Nimble, GoalZero, Elecjet, Biolite, Mophie, Zendure, and Shargeek, provide portable chargers with pass-through support.
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If you plan on traveling with your portable charger, there are a couple of restrictions to keep in mind. Firstly, the charger must be packed in your carry-on luggage and cannot be checked in. This guideline ensures that any potential battery-related issues can be addressed promptly. Secondly, the power bank must not exceed 100 watt-hours (Wh). If your power bank has a larger capacity than 27,000 mAh, it is advisable to check with the airline you are traveling with to ensure compliance with their specific regulations. However, if your power bank falls below 27,000 mAh, it should not pose a problem during travel.
In conclusion, when shopping for a portable charger, it is important to consider its capacity, charging speeds and standards, pass-through functionality, and travel restrictions. Understanding the limitations and capabilities of a power bank will help you make an informed decision and ensure that you choose the most suitable portable charger for your needs.
