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Question Laptop Power Supply.

Princess Luna
By Princess Luna
in Power Supplies
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Go to solution Solved by Ginger_,

Yeah that won't be a problem. Voltage is the main thing you have to watch. Too high you'll overload circuits, too low it might not even work. Amps are pulled by the laptop, not pushed by the charger. If the charger is rated for 3.4 but your laptop only needs 2.4, it'll only pull 2.4

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So my power supply / power cable on my Acer Aspire E5 is giving me issues... I have been searching online for a replacement and I can't find the exact type of mine (19V = 2.37A) however I have come across a shit ton of actually Acer branded ones that reads 19V = 3.42A with people saying this one is compatible.

 

I would like to know if that's really the case can I go with one of these or will I putting my laptop at risk? I do need a replacement quick as my current one is giving bad contact and it's almost impossible charge the battery and if I run out of battery I'm screwed as I need this laptop for work (my job didn't provide me a computer so I work on my personal laptop).

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Posted (edited)

It'll be fine, the laptop will still only draw the 2.37 amps. Like plugging a 12v .1A PC fan into a 12v 20A rail, it'll still only use .1 Amps and be fine.

 

probably

Edited by Sayori
reasonable doubt

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  • Solution

Yeah that won't be a problem. Voltage is the main thing you have to watch. Too high you'll overload circuits, too low it might not even work. Amps are pulled by the laptop, not pushed by the charger. If the charger is rated for 3.4 but your laptop only needs 2.4, it'll only pull 2.4

Fanboys are the worst thing to happen to the tech community World. Chief among them are Apple fanboys. 

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Just now, Ginger_ said:

Yeah that won't be a problem. Voltage is the main thing you have to watch. Too high you'll overload circuits, too low it might not even work. Amps are pulled by the laptop, not pushed by the charger. If the charger is rated for 3.4 but your laptop only needs 2.4, it'll only pull that.

Easy way to remember: Volts are pushed, amps are pulled.

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8 minutes ago, Princess Cadence said:

So my power supply / power cable on my Acer Aspire E5 is giving me issues... I have been searching online for a replacement and I can't find the exact type of mine (19V = 2.37A) however I have come across a shit ton of actually Acer branded ones that reads 19V = 3.42A with people saying this one is compatible.

 

I would like to know if that's really the case can I go with one of these or will I putting my laptop at risk? I do need a replacement quick as my current one is giving bad contact and it's almost impossible charge the battery and if I run out of battery I'm screwed as I need this laptop for work (my job didn't provide me a computer so I work on my personal laptop).

What Ginger said. More amps are ok, more volts are not.

NOTE: I no longer frequent this site. If you really need help, PM/DM me and my e.mail will alert me. 

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Thank you kindly every one, I'll place the order right now then, I was already at 40% battery only and getting worried after about half hour moving it around finally manage it charge again so I can't even move any thing out of fear it'll just disconnect again... soo troublesome... can't wait for the new one.

Personal Desktop":

CPU: Intel Core i7 10700K @5ghz |~| Cooling: bq! Dark Rock Pro 4 |~| MOBO: Gigabyte Z490UD ATX|~| RAM: 16gb DDR4 3333mhzCL16 G.Skill Trident Z |~| GPU: RX 6900XT Sapphire Nitro+ |~| PSU: Corsair TX650M 80Plus Gold |~| Boot:  SSD WD Green M.2 2280 240GB |~| Storage: 1x3TB HDD 7200rpm Seagate Barracuda + SanDisk Ultra 3D 1TB |~| Case: Fractal Design Meshify C Mini |~| Display: Toshiba UL7A 4K/60hz |~| OS: Windows 10 Pro.

Luna, the temporary Desktop:

CPU: AMD R9 7950XT  |~| Cooling: bq! Dark Rock 4 Pro |~| MOBO: Gigabyte Aorus Master |~| RAM: 32G Kingston HyperX |~| GPU: AMD Radeon RX 7900XTX (Reference) |~| PSU: Corsair HX1000 80+ Platinum |~| Windows Boot Drive: 2x 512GB (1TB total) Plextor SATA SSD (RAID0 volume) |~| Linux Boot Drive: 500GB Kingston A2000 |~| Storage: 4TB WD Black HDD |~| Case: Cooler Master Silencio S600 |~| Display 1 (leftmost): Eizo (unknown model) 1920x1080 IPS @ 60Hz|~| Display 2 (center): BenQ ZOWIE XL2540 1920x1080 TN @ 240Hz |~| Display 3 (rightmost): Wacom Cintiq Pro 24 3840x2160 IPS @ 60Hz 10-bit |~| OS: Windows 10 Pro (games / art) + Linux (distro: NixOS; programming and daily driver)
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