What happens if you use a 5V 1A charger to charge a 5V 2A device?

[XTAR-Justin]

Many users asked us, can I use a 5V 3A adapter to charge my xtar VC2 charger (requires 5V 2.1A)? Or can I use a 5V 1A phone charger to charge the xtar 5V 2A charger, or vice versa? I always receive these kinds of questions. So many users want to know what happens when they use the wrong charger specification.

There are two points you need to know.

Firstly, the Voltage supplied by the USB power supply must exactly equal what your device requires. Or some damage may occur to either.

Secondly, the Current of the USB power supply should equal what the device requires or be larger. If it is smaller, the device may charge slow or may not charge.

A device will only draw the current it needs. Under the same voltage, if your device is rated at 2A, it will only take around 2A from a 3A output of the USB power supply, leaving a 1A of headroom. So, as long your device needs less power than the USB power supply can provide, no need to worry.

If your device is rated at 2A and your USB power supply gives a maximum of 2A or even can’t reach 2A, it means it is working at 100% and will heat up. Your device will either charge slower or just drain the battery slower (if battery powered) or refuse to work (not enough power to operate).


Any more ideas or suggestions? Please comment below.

 

[zoiDman]

Any more ideas or suggestions? Please comment below.

Including an Explanation like this along with the User Manual, as well as on your Website, would probably Significantly Reduce the numbers of Question XTAR receives.

Also, you should Define what words like "Current" and "Power" and the Abbreviation of "2A" means.

I can show your Post to my Neighbor, and He might would be OK with 2A, because He probably knows that "2A" stands for 2 Amps. But He Doesn't know what "Current" is.

Or How to Calculate "Power". Or what a "Watt" is.

 

[Vinnybagodoughnuts]

How about just including a power supply with your chargers?Am I missing something here?I have been down in shipping.

 

[XTAR-Justin]

Including an Explanation like this along with the User Manual, as well as on your Website, would probably Significantly Reduce the numbers of Question XTAR receives.

Also, you should Define what words like "Current" and "Power" and the Abbreviation of "2A" means.

I can show your Post to my Neighbor, and He might would be OK with 2A, because He probably knows that "2A" stands for 2 Amps. But He Doesn't know what "Current" is.

Or How to Calculate "Power". Or what a "Watt" is.

Good suggestion!

 

[XTAR-Justin]

How about just including a power supply with your chargers?Am I missing something here?I have been down in shipping.

Nice idea. Then, the price of the charger set will be increased. But if you already have a power supply, you can save money.

 

[UncLeJunkLe]

How about just including a power supply with your chargers?Am I missing something here?I have been down in shipping.

That's the reason I never bought an XTAR, no power supply.

 

[BillW50]

That's the reason I never bought an XTAR, no power supply.

So you're the guy who doesn't already own a 2.1A USB power supply on the planet.

 

[BillW50]

XTAR already sells USB supplies as an optional accessory. They are damn good to, I might add.

 

[UncLeJunkLe]

So you're the guy who doesn't already own a 2.1A USB power supply on the planet.

No, I don't and I'm not buying one for a charger when I can buy another brand that does come with one.

 

[BillW50]

No, I don't and I'm not buying one for a charger when I can buy another brand that does come with one.

XTAR makes the best budget battery chargers on the planet and if you don't want one, fine by me. That means there are more for me.

 

[UncLeJunkLe]

Mmmm. ok.

 

[BillW50]

That doesn't even make sense UncleJunkle. You want XTAR to include an USB supply and force millions of us to pay extra for something we don't need. You are amazing! I vote NO!

 

[UncLeJunkLe]

Mmmm. ok.

 

[sonicbomb]

USB and not a mains power supply is why I will not buy another Xtar

 

[Vinnybagodoughnuts]

I am asking Santa for an on/off switch.

 

[ShowMeTwice]

My Xtar SV2 came with a power supply.

I've never purchased a charger without one.

 

[BillW50]

USB and not a mains power supply is why I will not buy another Xtar

Having the power supply within the battery charger is technically a bad idea. As the power supply gets hot and in turn makes charging batteries hot. Neither is good for one another. But most consumers doesn't care about technical reasons.

 

[sonicbomb]

Having the power supply within the battery charger is technically a bad idea. As the power supply gets hot and in turn makes charging batteries hot. Neither is good for one another. But most consumers doesn't care about technical reasons.

If the power supply is getting hot enough to heat the batteries, you have a major problem.

 

[BillW50]

If the power supply is getting hot enough to heat the batteries, you have a major problem.

Yeah you are talking about Mooch max current temperatures. I am not. I am talking about temps like 120°F. Charging batteries at 70°F is so much better for them in the long run. Same is true if you push your batteries to warmer than room temperature. Best to wait for them to cool first before changing.