1 Answer. Sorted by: 5. I am going to assume what you are thinking about is some sort of power pack that uses AA batteries like this one. There is no physical reason that you can not use AA batteries to charge a cell phone, as long as you have the correct adapters. What might be confusing the issue is that Li-ion batteries have definite It facilitates negotiation between two devices so they can determine how much power can be pulled from the charger. Power Delivery offers multiple power profiles from 5V to 20V, including a A healthy car battery with a 50 amp-hour equivalency rating should be able to charge any of the Samsung Galaxy model cell phones about 20 full times and an iPhone model around 30 full charges while still being able to start the vehicle. Double the number of charges if the car battery is being fully drained. Each make and model of cell phone is Consumers should always pay attention to the advertised Amp output and look for as high of an Amp output as required by the device that they are charging. For instance, a smartphone typically needs only 1.0A, while tablets can require 2.1A. If you need a high-speed car charger to charge both tablets and smartphones, it’s always wise to go Hi Garret, our recommended charge rate is 50 amps per 100 Ah battery in your system. For example, if your charger is 20 amps and you need to charge an empty battery, it will take 5 hours to reach 100%. We don’t recommend you exceed this charge rate as it can lead to a shortened battery cycle life. 4. How many amps does a car battery charge at? A car battery typically charges at a rate of 10 to 15 amps, depending on the charger used. 5. How many amps should a car battery charge at? A car battery should ideally charge at a rate of 10% of its amp-hour rating. For example, a 50 amp-hour battery should be charged at a rate of 5 amps. 6. LTenO.

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