Question:“Dell inspirion 1420 battery not charging adapter not recognized?!?
dell inspiron 1420 battery isn’t charging.. everytime i try to plug it in i get the message “The AC power adapter type cannot be determined. Your system will run slower and the battery will not charge…” I don’t know what to do? My laptop battery is at like 0% so when the charger comes off accidentally my laptop shuts off. I called dell and the guy was a dick. ”

Solution:”

I believe your problem is the laptop ac adapter because Dell has a build in mechanism to make sure the adapter is Dell before allowing it to charge the battery. However, even if the charger is Dell, if the identifier chip inside the adapter is broken, the laptop would refuse to recognize the adapter and stop charging. It seems that your laptop was starting to have the problem when it shows you the message that ac adapter cannot be recognized.

You can follow this Dell’s troubleshooting guide to try to get the laptop to recognize the ac adapter. However, it may not work for your laptop because the guide is outdated.

If the troubleshooting does not work, most likely, you will have to buy a new dell ac adapter. However, before you buy a new ac adapter, borrow someone else’s adapter to make sure it will charge the laptop and that is the problem for sure. I wouldn’t want you to waste money on a part that is not necessary.

If you do have to buy a new ac adapter, I would recommend buying one from www.laptop-battery-adapter.com, because they offer 1 year warranty and free shipping to all adapters at a good price. I think it is definitely worth it to consider buying adapter from them.”

The Dell solution about “Battery Won’t Charge at All”

If your computer runs normally on the AC adapter, but the dell inspiron 1420 battery won’t charge, please try the following troubleshooting steps:
1.Check the Battery and Connections:

  • Remove the battery from the system.
  • Look at the connectors in the bay and on the battery for signs of physical damage.
  • Check the battery charge by pressing the status button or image on the inspiron 1420 battery near the LED’s.
  • Reinsert the battery; push until it locks into place and the latch snaps back to the locked position.

    • 2.Swap Bays or Try A Second Computer:
    3.Flash the BIOS:
    4.Try to charge a second dell laptop battery like your own if possible.
    from http://ftp1.us.dell.com/diags/R66243.htm

    Solution 2#

    When powering on a Dell portable computer, you may receive an error message similar to:
    The AC adapter type cannot be determined. This will prevent optimal system performance.
    Strike F3 key ( before F1 or F2 key) if you don’t want to see power warning messages again.    Strike the F1 key to continue, F2 to run the setup utility.
    The system will continue to power on after pressing the <F1> key, but the error message is repeated every time the system is turned on. Also, the system may exhibit symptoms such as sluggish performance or the battery does not charge.
    The error message can be caused by any of the following:

     

    • An unsupported dell pa-12 AC adapter is connected to the system or docking station.
    • The AC adapter is not fully connected to the system.
    • The wall power cord is not fully connected to the AC adapter
    • The AC adapter or system’s AC adapter port is damaged.

    Ensure a compatible AC adapter is being used.
    Dell portable systems have different power requirements based on the processor type, system features, and configurable options. Use the list below to determine the minimum AC power required to effectively run the system and charge the battery.
    Adapter
    Family     Wattage Supported System Models
    Dell PA-12 65W

    Dell Inspiron:
    300M,500M,505M,600M,630M,640M,700M,710M,1401,1410,1420,1501,1520,1521,1525,6000,6400,E1405,E1505,
    Latitude:
    120L,131L,D400,D410,D420,D430,D500,D505,D510,D520,D530,D531,D531N,D600,D610,D620,D630,D630N,D631N,D800,D810,D830,D830N,X300,E4300
    Precision:
    M20 M70,
    XPS:
    M140,M1210,M1330
    Vostro:
    1000,1400,A840,A860

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