Everything is USB powered these days and I’m thankful for it. It means we can recharge quickly from any laptops and battery packs without having to carry around a bucket of disposable AAA and AA batteries.
Battery Pack Reviews
What is a mAh or milliamp hour?
A milliamp hour (mAh) is a unit of measurement for electricity. Every battery in a laptop, phone or drone will have a capacity measured in mAh. This is helpful when measuring battery pack size. If an iPhone X has a battery size of 2716 mAh and you have a battery pack of 3000 mAh then you’ll be able to charge your phone once. If you had a battery pack of 6000 mAh then you’ll be able to charge your phone twice. Keep in mind your phone will be on and using power as you are charging it.