All Questions
Tagged with power-supply battery
258
questions
0
votes
0
answers
330
views
Why does this ThinkPad T440s intermittently refuse to power on?
I press the power button on my ~2015 ThinkPad T440s and there is no effect whatsoever. The problem occurs regardless of whether the A/C adapter is connected and whether the removable battery is ...
-1
votes
1
answer
58
views
How can I tell if my new PSU 570W?
I bought a new PSU, and I don't know if it is 570W.
Box 1
Box 2
PSU
And this is my old PSU.
So I don't know whether my new PSU is 570W or 156W, and I do not know whether my new PSU has higher ...
- 1
1
vote
3
answers
6k
views
HP Zbook G3 Mobile workstation not turning on after
I am having a HP Zbook G3 Mobile workstation, i was working with that and forgot to plugin it in to charge, the laptop eventually turned off when it was out of battery, after that laptop is not ...
- 111
0
votes
1
answer
245
views
Does Asus X551M can run without a battery?
I have an Assus X551M laptop.
Without a battery (which is dead) it does start to some degree:
power diode lights up
some brief noise from the CD or HDD
but:
the CPU fan does not start
the screen ...
0
votes
1
answer
192
views
How to interpret battery health from powercfg results
While I am fairly experienced with desktop DIY repair, I have found myself stuck when dealing with my laptop.
I am using a Lenovo Legion Y530-15ICH-1060 and after a recent flight the battery has ...
- 43
0
votes
0
answers
185
views
Laptop touchpad problems when PSU charger (Original) is plugged in
I have an HP laptop which battery is damaged since February of 2021. HP DIAGNOSTIC TOOLS tells me that
battery internal capacity is only at 10% of its factory capacity. The battery is also inflated. I ...
0
votes
1
answer
405
views
Lenovo laptop won't turn on
I'm having a weird issue with a lenovo V130 laptop that wont turn on. The behavior is as follows.
I plug the AC adapter, and the led next to the plug turns on. When I push the power button the power ...
0
votes
1
answer
611
views
Can you run a laptop with a dead battery using only a power bank of appropriate size?
I have a MacBook Air (13", early 2014) with a dead battery (won't accept charge). I currently run it using the MagSafe power adapter. However, the magnetic connector is too easily disconnected ...
- 1
0
votes
1
answer
2k
views
Slow Wattage of Thinkpad T480 Charger
Here are the problems I have with my T480:
The "Slow Charger" warning appears in Windows. I tested several chargers on Windows and Linux that support at least 65W, but Lenovo Vantage and ...
- 1
0
votes
0
answers
151
views
My Dell Inspiron 15R 5521 laptop turns off suddenly at random times
I have a Dell Inspiron 15R 5521 laptop that is 7 years old now, its running Windows 10.
It just starts to turn off suddenly at random times without any warnings, when I power on again, starts running ...
- 329
0
votes
1
answer
206
views
APC Back-UPS and Corsair PSU do not work well together
UPS: APC BX700U-GR
PSU: Corsair RM550X
Maximum power consumption of all devices connected to the UPS: 100-110W
Average power consumption of all devices connected to the UPS: 60-70W
It is not possible ...
- 1
1
vote
2
answers
8k
views
Is it safe to use 70% isopropyl alcohol on electrical contacts on any device with a battery as long as it's powered off?
I'm talking about USB ports and charging ports for laptops and phones. I want to use a cotton swab or a microfiber cloth dampened with alcohol to clean the inside. Compressed air won't do it.
They're ...
- 121
0
votes
0
answers
234
views
Alienware 13 R3 - laptop shuts down without warning under heavy load ONLY when on battery
I've been an AW13R3 owner for almost 2 years, i bought a used model without warranty in order to have something to bring with me during job travels.
For a year or so the laptop has been performing ...
-2
votes
1
answer
156
views
Watts When Charging Devices [duplicate]
While battery technology is constantly developing and evolving and along with the the commonly accepted "best practice" where it comes to charging (Li-ion Batteries) something troubles me...
...
- 53
0
votes
2
answers
1k
views
Continuous power consumption of laptop's power brick when in plugged in, not charging mode?
Modern laptops come with the facility of being used in a plugged in mode only, without overcharging the battery. So, in such a case, the power consumption through the adapter should vary according to ...
- 111