That's a question for the seller.  Some third party batteries will work -- others won't, but only the seller can support a third party battery.

Hi ejn63,

thank you for your feedback,

what does it mean seller, seller of battery or saller of laptop? the battery has a lot of positive feedbacks and seems works for other users. Can it be BIOS related problem since I have there A02, while the latest A08.

And why the laptop is not working just from the Power supply? without battery it even not reacting on power button...

Thank you for your support in advance!

i ejn63,

thank you for your feedback,

what does it mean seller, seller of battery or saller of laptop? the battery has a lot of positive feedbacks and seems works for other users. Can it be BIOS related problem since I have there A02, while the latest A08.

And why the laptop is not working just from the Power supply? without battery it even not reacting on power button...

Thank you for your support in advance!

the battery seller has already replaced the battery and it again doesn't work, they state that it is already not their problem and relates to the laptop. Why do you think it is a circuit problem in MB while the laptop is booting up only when the battery is attached together with AC adapter? does someone know how many volts I should see on the contact to battery? with connected AC power supply and battery I see on the buttery connector 7.2 volt. The laptop was working fine till I recognized the problem with touchpad and disconnected original battery. I cannot tell whether it was working without battery and only with AC power-supply at that time, because I have not tested it and was waiting for the new battery.  

ejn63, thank you for your support in that matter, I will try today evening again to play with different configurations. I only do not understand what logic there behind, why the system turns off the laptop after 15 seconds. Also maybe the battery is discharged and it cannot work with that properly. Do you know the power limit for charging the standard battery? I will set on my lab power supply the limit, thus will charge the battery and not destroy it.

The battery should be about 7.4 V when fully charged.

If the system won't power up on AC only, try another OEM Dell AC adapter.  If that doesn't solve the issue, you have a bad power circuit and will need a mainboard replacement.

Hello,

I have already changed two batteries from different amazon vendors, non of them works. The battery works itself until it has power, but slowly discharging and then laptop goes off.

Should the laptop work only with attached power-supply or not? In BIOS it is recognized, but I see it only when the battery is attached, without battery the laptop doesn't react on any buttons. Can it be that the Power-supply is only providing the signal that is "present" but has no power to charge the battery?

Sounds like you have a bad power circuit - the adapter and battery are both OK.  Replace the system board.

It will - unless something else is wrong (and if it doesn't, the "something else" is usually a faulty system board).

thank you for your feedback, but you have not answered the question whether the laptop can work without battery - only with Power-supply?

ok, thank you for your feedback! buying a new MB is quite expensive, is there anywhere the circuit schematic available? I believe it is easy resolvable, but for this I need to see the electrical schema.

No such schematic exists - no.  If you have the required test equipment (oscilloscope, etc.) you may be able to black-box it to a single component - but then again, you may find it's an LSI chip that's bad (which will be beyond repairing unless you have access to some very sophisticated soldering equipment).

thank you for your support in that matter, I will try to find what went wrong there. Will write here where I came out in the end.