can i use a charger with higher amperage than the original

The goal of /r/hardware is a place for quality hardware news, reviews, and intelligent discussion. That's what I thought, but I didn't want to risk frying my machine if I was wrong. My Inspiron 6400 came with a 65W adapter. from the information you've provided, it looks like youre good to go. its sort of why power companies occassionally swap wires even though they still work. Now, curiosity was with my laptop as well as mobile charger, both blew out. Problem is, it's not in stock and I need it asap. share. I can use a laptop charger with the same voltage but higher rated amperage than my original, correct? its safer to use new wiring than continue using old and unstable ones. XD. be careful as old chargers also can die out and cause electrical issues. So here's the deal. Edit: How much current (measured in amps) a circuit draws is dependent on the circuit (in your laptop) , not the current source (the charger). Other than over current detection, it has no communication with the battery. Thanks. A higher rated charger shouldn't charge a battery any faster and there should be no risk of damage. Yes. So here's the deal. No. Current must be same or higher. save hide report. I have a dash cam and the original car charger that came with it converts the cars 12v to 5v with 2.5 amps. be careful as old chargers also can die out and cause electrical issues. from the information you've provided, it looks like youre good to go. Does that mean you can’t use a 5V/2.1A charger, or even a 9V/2A charger (in the case of USB-C)? This thread is archived. That's a drop of .5 amps and it is their own brand. My laptop had a charger (standard) of voltage 19.5 V and 3.67 A current. Not at all. Basically, all modern batteries are built with with a chip that regulates the input—they will allow what they can … 27 comments. A current source has fixed current and variable voltage. The laptop even takes advantage of the extra power and (unlike with the 65W adapter) doesn't slow down charging when I'm using the laptop. Now, I had a charger of 6.7 A at home, I put it in my laptop, there was no change but laptop now charged frequently. This is what you described. The battery charge controller is in the laptop and cell balancing electronics in the battery itself. By using our Services or clicking I agree, you agree to our use of cookies. A voltage source is the opposite of that; fixed voltage and variable current. Problem is, it's not in stock and I need it asap. The higher wattage PS doesn’t necessarily use all those watts unless called for so you’ve got a safety zone – a reserve, like horsepower in a car. From what I understand, the amperage on laptop adapters is the maximum amperage, or am I incorrect? If the device only draws a certain amount of amperage it doesn't matter if the charger itself can output more then that amount. plus has to be on the same pin for both new and old psu's. It will also randomly refuse to charge batteries more than a year old, according to some dell techs. That's a drop of .5 amps and it is their own brand. From what I understand, the amperage on laptop adapters is the maximum amperage, or am I incorrect? SO in a nutshell, Voltage and polarity must be the same. Voltage depends on the circuit. New comments cannot be posted and votes cannot be cast. Find out more about how we use your information in our Privacy Policy and Cookie Policy. Yahoo is part of Verizon Media. If they aren't and your laptop doesn't have backwards voltage protection, you can say bye bye laptop. The hardwire kit for it that I'm wanting to buy says 12v to 5v with 2 amps. In fact, a higher amperage charger will likely charge your phone even faster, and it can do so safely. There are no error messages with the new adapter, and the battery charges properly. The charge controller will regulate how much power the battery accepts. (Note that voltages were same). 92% Upvoted. I have a dash cam and the original car charger that came with it converts the cars 12v to 5v with 2.5 amps. Cookies help us deliver our Services. But semantics aside, most adapters are voltage sources anyway. :(. Information about your device and internet connection, including your IP address, Browsing and search activity while using Verizon Media websites and apps. Wall outlets can be connected to either a 15 or 20 amp breaker, and whatever you plug into it will only draw the amperage it needs.

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