There are a few things to think about when you're shopping for a portable charger.
Capacity: Power bank capacity is measured in milliampere-hours (mAh), but this can be a bit misleading as the amount of power you use depends on it. the cable you useThe device you're charging, and the charging method (Qi wireless charging is less efficient). You will never get maximum capacity. We try to provide an idea of what you will get in terms of equipment charges.
Charging speed and standards: Charging rates for devices like smartphones are measured in watts (W), but most power banks list voltage (V) and amperage (A). Thankfully, you can calculate the wattage yourself by simply multiplying the voltage and amperage. Unfortunately, achieving that maximum rate also depends on your device, the standards it supports, and the charging cable you use. including many smartphones Apple iPhonesSupports power delivery standard, which means you can use high-powered power banks to recharge the device without any issues. Some phones, such as Samsung's Galaxy S range, support a supplementary PD protocol called PPS (Programmable Power Supply) that goes up to 45 W. Many phones also support Qualcomm's proprietary Quick Charge (QC) standard. There are other proprietary fast-charging standards as well, but you won't typically find power banks that support them, unless they come from a smartphone manufacturer.
withdrawal: If you want to charge your power bank and use it to charge another device simultaneously, it will need pass-through support. The listed Nimble, GoalZero, BioLite, Mophie, Zendure and Charge portable chargers support pass-through charging. Anker discontinued support for pass-through in some of its products because it found that the difference between the output of the wall charger and the input for device charging can cause the power bank to turn on and off rapidly and reduce its lifespan . The Monoprice also doesn't support pass-through charging. We would recommend caution when using pass-throughs, as these can cause even portable chargers to overheat.
Travel: Traveling with a power bank is safe, but there are two restrictions to keep in mind when you fly: You must have a portable charger in your carry-on luggage (it can't be checked), and it must be rated at no more than 100 Should not exceed K (watt-hours). If the capacity of your power bank is more than 27,000 mAh, you should check with the airline. There should be no problem below that.