Dell Inspiron 1545 - “plugged in, not charging”

Question

A family member brought me their Dell Inspiron 1545 a few hours ago (I'm a software engineer so I know how to fix any and all computer issues, right??). They just bought a new battery for it that won't charge. After exhausting my Google-foo, I see three possible solutions:

1. Bad motherboard (I don't think this is the case).
2. Bad battery.
3. Bad charger.

I'm thinking that #3 is the most likely because they are using a generic power supply. If everyone is agreed, or at least leaning in that direction, is there anyway to bypass this "feature" of Dells?

Any help is appreciated!

Answer 1

Dell notebooks are notorious for not charging batteries with adapters that aren't branded Dell. Your best bet is to order an adapter straight from Dell, or a Dell specific adapter from eBay or a local computer store.

I did retail computer repair for three years, servicing approximately 5 Dell notebooks per day, 5 days a week. We had universal AC adapters with tips to fit that would provide power to turn on the notebooks, but only the Dell branded adapters would charge the battery.

I don't know why this would be the case, but it was.

Answer 2

Try this:

Disconnect AC

Shutdown

Remove battery

Connect AC

Startup

Open Device Manager

Click the plus (+) sign next to Batteries category, right-click all of the "Microsoft ACPI Compliant Control Method Battery" listings, and select Uninstall In the "Confirm Device Uninstall" dialog box, click OK. (it’s ok if you only have 1 of these).

Click the plus (+) sign next to System Devices. Right-click the “ACPI Fixed Features Button" and select Uninstall. In the "Confirm Device Uninstall" dialog box, click OK.

Shutdown

Disconnect AC

Insert battery

Connect AC

Startup

Answer 3

Update your BIOS.

It has fixed this issue for me a few times. Especially if you are using the factory Dell charger. This also works for the after-market adapter as well.

Answer 4

You can only charge a batter if

1. the power manager chip thinks your power adapter has extra juice to charge the battery and
2. battery reports it can be charged.

Charging a battery without enough current may reduce its life, so if your computer is under heavy load, the chip may choose to stop charging or even draw power from the battery.

Lithium batteries have a narrow operation temperature range. If it's too cold or hot, safety mechanisms will prevent charging.

Of course, the power adapter, the manager chip or the battery may be faulty.

Answer 5

1. Check the AC adapter - it should have 19volts DC with at least 90 watts output. If it is less than 19 volts or if it is less than 90 watts it may power the laptop up, but not charge it.

2. Remove the battery. Plug in the AC Adapter. Turn on computer. If the computer won't start up only on AC power, you're toast. Try with their original AC adapter, or call around for your friends - MOST Dells use the same power adapter. Try an original adapter of at least 90 watts.

3. If it boots, go into the BIOS setup using the F2 key. Go into the POST Behavior screen. Look for Adapter. This setting either warns you the power supply is inadequate or doesn't. Make sure it is enabled. Reboot, do you get a warning message on bootup that the power supply is inadequate?

Let us know how things work out.

Answer 6

Fully discharge the battery by running the computer on battery mode and then remove and re-fix the battery. Then charge the battery for more than one hour (if the battery is working, charging light will be off after charged) and then switch on.