Lithium cells outperform Nickel Cadmium as well as Nickel metal Hydride in nearly every way. however they likewise requirement a bit bit much more babysitting to get the most out of them. That is available in the type of manage circuitry that charges them properly as well as won’t let them get below a specific voltage threshold during discharge. We delighted in reading about [Carlos’] Lithium cell salvage efforts as it talks about these concerns.
He wished to salvage a Lithium power source for his projects. He had the three cell pack from a dead Macbook pro seen in the upper left, in addition to the single blown cell from a digital photo frame shown on the right. The three-pack didn’t screen each cell individually, so the death of one borked the entire battery. He desoldered them as well as probed their voltage level to discover one that was still usable. To avoid his job from draining the source below the 2.7V mark he scavenged that circuit card from the digital photo frame. A bit of testing as well as the system is up as well as running in a different piece of hardware.
Don’t be terrified of this stuff. If you discover the fundamentals it’ll be simple to utilize these powerful batteries in your projects. For much more background inspect out this charging tutorial.