My laptop runs extremely bad while plugged in, but perfect while not plugged in (and seemingly stops charging randomly)

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Frelle

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Oct 11, 2015
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Hello guys, my Acer Aspire E 15 is behaving out of its mind quite frankly.

I've got a couple of problems with it, especially with it running worse when plugged in. Not counting the problem that I probably need a new one, as it randomly stops charging a lot of times, and wiggling it around doesn't seem to help.

So I've been testing this in various games, and an example I can come with is an average FPS of 20-25 FPS while plugged in.
Now I try the same game, but with the laptop NOT being plugged in, and guess what! I get a stable 60 fps.

I don't seem to be able to pick up any anomalies with my temperatures (Using AIDA64 to monitor). However I do see my CPU core speed going way down under the original core speed, only to suddenly go to the very max. It's also worth noting that when it's plugged in, I get a lot of stuttering, not just low framerates, cause it keeps changing all over the place!

I don't have the economy to buy a new laptop, so I've come looking for help. Thanks in advance!

*edit*
I chose to put this under the components forum as I don't know just which components might be causing this, or if it's even components. I'm a bit out of my waters here.
 
Solution
Y
Replace battery and charger. Drastic i know but it seems to be dying . If you decide to replace I can point you to the parts you need.

Many people are confused by amperage ratings and what they mean when it comes to power supplies and replacements.
One easy way to look at it is this:
Voltage is provided by (or pushed) by the power supply.
Amperage is taken by (or pulled) by the device being powered.
In other words, while the voltage is a constant and should match, the amperage is something that varies based on the device’s need. Your computer will “pull” more amps when it’s working hard than when it’s not. The voltage will remain the same regardless.
The amperage rating of a power supply is the maximum number of amps that it’s able to...
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Frelle

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It certainly does. I forgot to mention that I have it set to maximum performance on everything, while plugged in and unplugged.
 
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K

kaptainkuftic

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Jul 26, 2016
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Man, I'm actually at a bit of a loss here too. Having you tried praying to the gaming gods?
 
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Frelle

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Heheh, I'm no superstitious person, or a believer. But prayed to the gaming gods? Oh yes I have done that, but it seems it's gone unheard!
 
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Yamitime

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Found this solution from a previous thread .

I had to change the P0....P7 states, the power states, of the amd cpu.
The problem was, the CPU started to slow down to 1.1 ghz when plugged in. So i changed the power states from P7 - P3 to 1.9 ghz. So there is no other power state, which would bring the cpu to 1.1 ghz.
And thats how the problem was solved :D

http://www.tomshardware.co.uk/answers/id-2656319/laptop-slows-charging-plugged.html
Full thread
 
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Frelle

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Oct 11, 2015
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Well, I actually read that one and did everything too. My laptop doesn't go up that high, but I've been toying around with it all the same, and it does give me higher core clocks on average, but it still dips all the way down most of the time.
 
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Frelle

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Hmm. It's 19 volts and 2.37 amps.
*edit*
I've honestly lost count if this is the original or an older. I've got at least 3 different chargers, but this is the only one from Acer which fits and charges (but sometimes stops charging).
 
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Frelle

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Oct 11, 2015
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Oh, well that's one problem solved! But one remains. It still starts charging and stops at random times. It makes it a real challenge to try and play games on, as it may suddenly be down at 10% without I realised it had stopped charging.

What could cause that to happen? Is a whole new computer needed? I have tried different chargers, and got one to work for some time, but it actually stopped charging at one point and has never been able to charge my computer, but still works fine for other computers.
 
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Frelle

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Oct 11, 2015
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Oh wait! I just found the correct charger. It's an acer charger with 19 volts and 3.42 amps, that's the correct one right?

Well problem is that it can't even charge when I use that one. This charger can charge other laptops, but apparently not mine. It's like it doesn't fit properly. I can wiggle it a bit.

*update*
It does charge. But only for half a second with varying intervals.
 
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F

Frelle

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Oct 11, 2015
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Well, I'm quite certain that this is the charger which I had been using while at home, and the insufficient charger while I was attending classes. It worked fine, but suddenly stopped charging.
 
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Yamitime

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Sep 4, 2014
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Yes your right . I may be wrong on this .I'm sure somebody will help out more.
 
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Frelle

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I don't hope you saw my message as being offensive, for I didn't mean it to be. I'm unsure if it was the charger which I've been using, but it could be. It wasn't supposed to sound like being an ass if that's what you thought! :/ Or I just misunderstood your message, heheh! That's the problem with texts, they never express one's thoughts and feelings completely.
 
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Yamitime

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No offence taken :) I just meant that someone else will come and maybe have a new idea on what the problem is.
 
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Frelle

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Glad to hear that, Yamitime :)

I really hope someone has a solution to this, whatever that solution may be. It's driving me nuts to use the computer for a maximum of one or two hours on a slow weekend with nothing else to do, only to see the battery is down to 15%.

It has literally just gone down from 100% while plugged in and down to 91% in 10 minutes.
 
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Frelle

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Oct 11, 2015
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I feel like it's actually gotten way worse than it has been before. I would usually be able to play on my laptop while it charged, and remaining at a steady power level. Instead it loses power now.

I will try to video capture my computer's sensor outputs while playing Diablo 3, which hopefully may help identify the problem?
 
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Yamitime

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Sep 4, 2014
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Replace battery and charger. Drastic i know but it seems to be dying . If you decide to replace I can point you to the parts you need.

Many people are confused by amperage ratings and what they mean when it comes to power supplies and replacements.
One easy way to look at it is this:
Voltage is provided by (or pushed) by the power supply.
Amperage is taken by (or pulled) by the device being powered.
In other words, while the voltage is a constant and should match, the amperage is something that varies based on the device’s need. Your computer will “pull” more amps when it’s working hard than when it’s not. The voltage will remain the same regardless.
The amperage rating of a power supply is the maximum number of amps that it’s able to provide if needed.
Thus, as long as you replace your power supply with one that is capable of providing as much or more amps than the previous supply, you’ll be fine.
If you replace the power supply for some reason with one that has a maximum amperage rating that is less than the previous and less than what your device actually requires, then you may end up with a burnt out or (at least) overheating power supply, and the device itself may not function, or may not do so well.
 
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