For more than a decade, I’ve been using a series of HP and Compaq laptops and as a result, I had accumulated a pile of expired, apparently dead batteries composed of lithium-based cells. I decided to resuscitate a couple of the old laptops for a project in Campbell River, and needed a couple of working batteries. Rather than buy new ones, I decided to crack open a few of the old ones to see if they still had any working cells that I could re-use. (more…)
Randy, you'll need to do further electrical diagnostic steps to locate the problem. One way to proceed is to start…