If you own a laptop, then you have probably been advised at least once in your life not to use it all the time connected to a power source because the battery will degrade over time. This recommendation is supported and a recent study abroad, the results of which may save us from replacing the laptop battery sooner than necessary. According to this study, in an ideal situation, a laptop battery should only be charged to 80% and discharged to 40%, then the process should be repeated, this method of use increasing the life of the battery by up to 4 times .
Cadex Electronics CEO Isidor Buchmann told WIRED that ideally everyone would charge their batteries to 80 percent then let them drain to about 40 percent. This will prolong the life of your battery — in some cases by as much as four times. The reason is that each cell in a lithium-polymer battery is charged to a voltage level. The higher the charge percentage, the higher the voltage level. The more voltage a cell has to store, the more stress it's put under. That stress leads to fewer discharge cycles. For example, Battery University states that a battery charged to 100 percent will have only 300-500 discharge cycles, while a battery charged to 70 percent will get 1,200-2,000 discharge cycles.
The explanation for this recommendation is quite simple: each lithium-polymer battery is charged up to a certain voltage, as the charge percentage increases, so does the voltage in that cell, and the higher the voltage in each cell, the more it increases and the pressure placed on that cell, the end result being fewer charge/discharge cycles. Practically, a battery charged all the time up to 100% and discharged will have between 300 and 500 charge/discharge cycles, while a battery charged only up to 70% will have a lifespan of up to 4 times longer big.
The results are easy to understand and quite conclusive, but unfortunately it is difficult to implement a battery monitoring system, especially when you are busy with work, or who knows what else. Users will never care that their laptop batteries "survive" between these charge/discharge cycles, so now you know why your laptop batteries stop working or don't offer the same autonomy after a few months of use.
