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5v 1a vs 5v 2a charging. |
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#1 |
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Forum Member
Join Date: Oct 2002
Location: Wolf359
Posts: 96,804
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5v 1a vs 5v 2a charging.
Does it matter if you charge something that normally uses a 5v 1a charger with a 5v 2a charger?
I've forgotten what some gadgets need to be charged with and don't want to do any damage by using the wrong type of charger. |
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#2 |
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Join Date: Sep 2003
Location: Sandy Heath, Beds. UK
Posts: 10,386
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If you are talking about USB, then I think you are fairly safe.
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#3 |
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Forum Member
Join Date: May 2004
Location: Reading
Posts: 27,927
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Quote:
Does it matter if you charge something that normally uses a 5v 1a charger with a 5v 2a charger?
I've forgotten what some gadgets need to be charged with and don't want to do any damage by using the wrong type of charger. The device that the charger is plugged into determines the current drawn from the charger. So if that is 1A it will draw 1A whether you use a 2A or 2,000,000A charger. The voltage however must be an exact match for the device. So plugging a 10V charger into a 5V device is potentially going to cause far more harm than plugging a 2A charger into a device that draws 1A. |
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#4 |
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Forum Member
Join Date: Oct 2002
Location: Wolf359
Posts: 96,804
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Thanks for the info, I feel safer now.
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#5 |
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Join Date: May 2004
Location: Reading
Posts: 27,927
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Quote:
Thanks for the info, I feel safer now.
Do you stop to wonder if it is safe to plug a lamp rated maybe a 1/4 of an amp into a 13A mains socket? No you just do it and assume the lamp will light up not blow up. Same principle. Current is determined by the load not the supply.
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#6 |
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Join Date: Mar 2009
Location: It's Grim
Posts: 24,413
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Voltage should match within about 10%
The Amperage (A) on the new charger can be higher. ------------ If you miss-match the voltage bad things can happen, even destroying the device. |
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#7 |
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Forum Member
Join Date: Oct 2002
Location: Wolf359
Posts: 96,804
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I was using my Nexus 7 charger to charge a couple of different gadgets, one of them recommend using a 5v 2a charger, but I didn't realise that the N7 charger was a 5v 2a charger anyway.
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Same principle. Current is determined by the load not the supply.