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I've just bought a portable battery, but the portable battery don't comes with an adapter for the house current; it only comes with a USB cable so I can charge it with my laptop. My mobile phone came with a charger, and I want to know if is safe to use that charger with the battery without problems, even though the output has a higher amperage. These are the specifications:
Battery input: 5V, 1A
Charger output: 5V, 2A
Will the output only give the quantity that the input is requesting, or will the input overheat because it cannot handle all the current it receives?
1Now, adding a bit of info to this, if my phone can 'load' up to 2A and my charger ouput is 1A, will only give 1A or will overheat? As I can see, if the resistance is reduced, it will carry more curent, so supposedly will carry more than 1A, right? – Jorge Fuentes González – 2015-07-14T15:30:31.643
2A power supply (what you're calling the "charger") rated for 1A can only provide up to 1A and still operate within spec. If your phone tries to pull much more than that it will excessively load the power supply. At moderate levels of overload the result is likely only the voltage "sagging". But at more excessive overloads the power supply may overheat and may be damaged. – Jamie Hanrahan – 2015-09-26T16:29:05.327
1So if I plug a 3.5A 5V USB charger into my iPhone (which comes with a 5V 1A charger - but Apple say can work with a 2A 5V iPad charger) - this will not damage the iPhone, right? – niico – 2015-10-19T00:41:08.610
2@niico correct - the iPhone will only draw the amount of current it needs (1 amp in the case of an iPhone). – nc4pk – 2015-10-19T01:18:41.093
(iPhone 6 and above can now draw 2A - apparently - like iPads) – niico – 2015-10-19T01:42:11.637
@nc4pk Please, add some sort of summary at the end of your answer. Exercises are also good for readers. – Léo Léopold Hertz 준영 – 2016-08-26T12:46:26.420
@nc4pk I was googling this question and I saw that someone stole your answer for advertising a product on Amazon : https://www.quora.com/What-would-happen-if-I-charged-my-phone-with-a-5V-1A-or-5V-3A-battery-charger-The-phones-rating-is-3-8-V-1300mA/answers/23422229
– Meds – 2018-09-23T11:28:07.620