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?