5. votes. Li-Ion degrades with use, so you should prefer shallow discharges. I.e., always charge it as soon as possible. This is in contrast to Ni-Cd and Ni-Mh accumulators, which do like to be fully discharged from time to time to keep their full performance. So normally you should plug in your laptop whenever possible. with a lithium ion battery, there is no memory. therefore, no need to EVER run it completely dead. lithium ion batteries have a certain # of full to dead cycles. the best way to ensure that your battery will last a long time is to try to keep it as close to full as possible. Battery drained completely after only one day in sleep mode. One night after playing on the Switch (it still had 70% charge), I left the charger unplugged, and just after one day, the charge went down to 0. This has never happened before, even when it was unplugged for a week. Therefore, if you still have a laptop that uses a nickel-cadmium battery you should let it discharge completely before allowing it to recharge. Luckily, there are very few NiCad batteries still powering laptops these days, so for most people this won’t be an issue. The next generation of laptops used Nickel-Metal-Hydride (NiMH) batteries. By letting the battery rest, you give the reaction products a chance to dissipate. The higher the drain on the battery, the faster the products build up, so batteries under high drain appear to recover more. Many battery-operated appliances use two or four cells in series to create higher voltages. If one of the cells has a problem (for example A cobalt-free lithium-ion battery . Researchers at the University of Texas have developed a lithium-ion battery that doesn't use cobalt for its cathode. Instead it switched to a high percentage of Don’t Leave Batteries at 100%. Leaving lithium-ion batteries perpetually plugged can lead to undue strain. If you’re used to working from a laptop that is plugged in most of the time, do your battery a favor and work unplugged for a while. Letting it drain to about the 40% level is good for overall battery health. Range between 40% and 80% is the most stable range (approximately 0.5 Volt drop). It means that in this range, the battery will slowly discharge and will yield the rated output voltage. Range between 40% to 0% is the most unstable zone and it witnesses a sudden drop of voltage. The battery shall not be ideally operated in this range. .

lithium ion battery drain completely