Dead KM742 laptop battery
I have a Dell latitude E5510 laptop with a dead battery -- as soon as I unplug the AC power, the laptop dies immediately.
I would like to disassemble the battery pack, to see if it has easily-replaceable parts inside, thereby saving me money on a new battery. But I can't figure out how to get it open. Does anyone have any experience with opening a laptop battery pack and replacing the parts inside?
If I need to buy a new battery, the only one I have found that I trust the quality of is sold by Duracell for $49. Everything I have found on Amazon or Ebay is around $10, and I don't trust the quality of these batteries. I can't even find this battery on the Dell website. Does anyone know where I can get a good-quality KM742 battery at a reasonable price?