Can I Use the Same Car Charger for Both Laptops?

  • Thread starter Thread starter iancoric
  • Start date Start date
  • Tags Tags
    Car Charger
Click For Summary
Using the same car charger for both laptops is acceptable as long as the charger provides at least the same voltage and current output as the manufacturer's charger. The charger in question outputs 18.5V and 4.9 amps, while the original charger provides 18.5V and 2.5 amps. Since the new charger can deliver more current than needed, it will work safely with the second laptop. The key factor is ensuring the voltage matches and the current capacity is sufficient. Overall, this approach should not pose any issues for charging the second laptop.
iancoric
Messages
2
Reaction score
0
I have two laptop computers but a car charger for only one of them. The charger says it produces 18.5V 4.9amps. Will this be OK for the other laptop - the specific charger sold by the manufacturer produces 18.5V 2.5amps. Thanks!
 
Engineering news on Phys.org
The current specifications on devices like these are the MAXIMUM current the device is able to supply. These devices produce a specific potential (voltage) and the thing you plug into it determines how much current must be delivered.

As long as your new charger can produce as least as much current as your old charger, you should be fine.

- Warren
 
Thanks - i was hoping you'd say that!
 
Thread 'I thought it was only Amazon that sold unsafe junk'

Thread 'I thought it was only Amazon that sold unsafe junk'

I grabbed an under cabinet LED light today at a big box store. Nothing special. 18 inches in length and made to plug several lights together. Here is a pic of the power cord: The drawing on the box led me to believe that it would accept a standard IEC cord which surprised me. But it's a variation of it. I didn't try it, but I would assume you could plug a standard IEC cord into this and have a double male cord AKA suicide cord. And to boot, it's likely going to reverse the hot and...
View full post »

Similar threads

Parallel Power Sources: Use 2 12V 75W Chargers for 150W Project
  • · Replies 24 ·
Replies
24
Views
3K
Manually charging batteries
  • · Replies 11 ·
Replies
11
Views
2K
Burnt wire - How to investigate the cause?
  • · Replies 6 ·
Replies
6
Views
5K
Why do phone chargers cause radio interference?
  • · Replies 14 ·
Replies
14
Views
6K
Calculating Power and Amps for RC Heli Battery Charger and Generator
  • · Replies 10 ·
Replies
10
Views
2K
How can I (safely) test this "toy" machine?
  • · Replies 32 ·
2
Replies
32
Views
3K
Isolate solar charger PWM pulses
  • · Replies 10 ·
Replies
10
Views
2K
Mimicking a 14.4VDC Speaker Charger
  • · Replies 2 ·
Replies
2
Views
2K
Share a power supply between two devices
  • · Replies 8 ·
Replies
8
Views
3K
Using 6 Diodes for a 30 Amp Battery Charger
  • · Replies 9 ·
Replies
9
Views
3K