Dell Inspiron 6400 - Battery replacement

The input jack that is soldered to the motherboard (where the AC jack plugs in) probably has a cold solder joint. Thus the laptop switches from battery to AC power. You can try to have the solder joints
re-soldered.

You may have a bios setting to check, it also may be damage on the connector or on the actual south bridge from over heating. I would load up into the bios and see if your drive is being detected and has the proper settings, try a default bios setting and see if that helps.

Hi
I think the battery you bought is not compartible with your pc notebook that is why you are experiencing such problem.All you need to do is to get to the store or outlrt where you got the battery and get it replaced for a compartible battery or better still you should go along with your system.
GOODLUCK

depending on how old the system is and how hard it was used on battery the battery may be old and dying and may need to be replaced, from my experince ive seen laptop batterys only last about a year at best

Check out this battery site from Dell to see if you have a lemon
www.dellbatteryprogram.com

I’m happy to assist further over the phone at https://www.6ya.com/expert/dan_91204789c5bd4b93

Here are my recommendations for this issue:

1. Reseat the battery.
2. Remove All External Components
3. Check the battery connectors on the battery and the system. Examine the connector on the battery and the system. Make sure that there is no physical damage and that it is clear of debris.
4. Remove All External Components
5. Try a known-good battery in the system, if available.

Hi,
1. Shut down the system, remove the battery and the Ac adapter from the computer.
2. Press the power on button for 10 seconds
3. Reinsert the battery
4. Power on the computer and as soon as you see the dell logo press the f2 key a couple of time
5. Using the up down arrow keys , go to the option that says battery info. If there is an error message listed kindly post it back

6. Otherwise shut down the computer reconnect the ac.adapter and check if the problem is solved

Also the battery has a diagnostic lights on it , remove the battery from the computer and press the button on the battery a set of lights would glow. If they are steady and come in a series the battery is good , If some lights are missing the battery is bad and may need replacement

Thanks
Proton

FIRST REPLACE YOUR BATTERY, THEN ALSO CHECK VIRUS WITH AN UPDATED VIRUS CLEANER.

Most probably the seating of the processor on the motherboard is not proper
check this site and mount the processor properly
http://support.dell.com/support/edocs/systems/ins6400/en/sm/cpu.htm#wp1084976

You can also pick up the batteries less expensive than most computer places at batteries plus. And yes it sounds as though it is the batteries charge is getting low, especially if it runs fine when the battery is out and you have it plugged in.