The memory effect is a phenomenon that reduces batteries charging capacity when they are recharged without being completely empty. If the recharge is premature or incomplete (without reaching 100%), crystals are formed by an internal chemical reaction. In lithium batteries, this problem (which reduces performance) does not occur.
This is one of the biggest advances of lithium batteries over other types of batteries that were on the market and more popular some years ago, such as lead-acid and nickel ones. That is why lithium has easily gained ground in recent times over other types of batteries because they are not subject to the memory effect, which causes many problems and inconveniences to users. » learn more