Unsolved
3 Posts
0
1783
March 3rd, 2022 18:00
Dell 5480 Battery or Hardware issues
Hi,
I have bought a used Dell Latitude 5480 and I got to know it has a few issues now.
1. It works fine when plugged-in but as soon as I remove the AC Adapter, It prompts a notification "Your Battery is very Low". I would have believed it that the battery health might be deminished (BIOS also says its Poor) but listen further. After a few minutes, the laptop turns off. Then when i switch it on, Press F1 to power it on low battery. The laptop, while showing 0% charge after coming down from 50%+ in a few minutes, still works for more than an hour or sometimes touches 2 hours. The interesting part, I want to check the total duration so noted the time and it worked for 40 minutes then turned it off at night and thought will check the rest tommorrow.
2. The next day, when i tried to turn on, the laptop won't as it needed the charger to be plugged-in now. Did the laptop used all the charge overnight while turned off? Because if I wouldn't turn it off, it would had run for an hour more.
P.S. The charger I got with it is 90W (BIOS Detects) while the laptop comes with a 65W. Does it harms or has anything to do with it?
Thanks
0 events found
nyc10036
6 Operator
•
5.6K Posts
0
March 3rd, 2022 19:00
Is it a genuine Dell charger?
waleedkhan
3 Posts
0
March 4th, 2022 01:00
Yes, It is a genuine Dell Charger. Only thing is, It's 90W while Laptop comes with a 65W officially.
waleedkhan
3 Posts
0
March 4th, 2022 03:00
Update: The laptop lasted for 2+ hours of mix use on 1% charge.
yves31
5 Posts
0
March 13th, 2022 13:00
My latitude 7480 lasts 3 hours after battery showing 0% charge.
The issue is battery management system keeps incorrect capacity information and user cannot correct it. In my case, the original battery capacity was 60000mWh. Over the time the capacity decreased and battery shows only 13500mWh (22.5%) left now. Based on 13500mWh, laptop would last ~ 1 hour then shutdown when the charge down to 1%. The true battery capacity could be ~53,000mWh and that's why I can still work on the laptop for another ~3 hrs at 0% charge.
Dell should provide a utility app to re-calibrate battery capacity so that battery shows correct capacity. With correct capacity, we can keep using the battery for a longer time. However, Dell wants to make money from us for purchasing more batteries. So it does not allow re-calibration of battery capacities and we all stuck with the issue.
Fortunately Dell still allows boot up at 0% charge, so the laptop is not completely dead. You may keep using the old battery for a while, but need to reboot each time when laptop shuts down at ~1% charge. It's a very annoying issue that Dell won't fix.