Hi..I have been given this Laptop by my brother,it was functioning correctly and Battery Charging ,until,I  TRIED to Power it on today as NORMAL with the Battery and Mains charger installed and it wouldn't power up,absolutely dead! But as soon as I removed the Battery[Dell Type J1KND 11.1V Cap 48W],the Laptop would power up from Mains OK.Does this indicate that the Battery is faulty?is there any way to test it?or is there some other fault with Motherboard etc? any help appreciated  Michael >NB I have tried discharging the circuits by depressing Power Switch for 20 seconds before installing battery and mains adapter but this doesn't make any difference.Almost ALWAYS it is the battery. The test is to try another battery. * Eventually you need another battery anyway. The average life of laptop batteries is about 2 years for many users.


* Yes, there are testers for laptop batteries. Such a tool for commercial USE COSTS more than  a new battery. You can use a common mufti meter, but you need a new battery to use as a reference. Sooner or later you have to buy a battery, even to prove the problem is the motherboard. You don't want it to be the motherboard.http://www.dell.com/support/troubleshooting/us/en/19/Product/inspiron-15r-n5110

http://www.dell.com/support/troubleshooting/us/en/04/KCS/KcsArticles/ArticleView?c=us&l=en&s=dhs&docid=266588&cs=19Thanks for that but I cant carry out fault diagnosis on the battery when the laptop wont power up with the battery installed!!!!!!!!!!!!!!!!!!!!!  michael Let me make it clear. You buy another battery.
Then, if you wish, you can run diagnostics to see if the motherboard  is at fault. Quote from: thomastt37 on August 16, 2013, 12:48:39 PM

Thanks for that but I cant carry out fault diagnosis on the battery when the laptop wont power up with the battery installed!!!!!!!!!!!!!!!!!!!!!  michael