Rechargeable battery Memory effect

Many people feel doubt about the memory effort of a rechargeable battery, they may think that if a battery has some remaining charges with it, the next recharge will not hold as much charges as it should. In fact, this is not really the case. When people encounter the less capacity problem with a rechargeable battery after using for some time, they will blame on the memory effect and start draining the remaining power to zero before they start recharging them.

If we study carefully the main 2 reasons why battery unable to output the capacity as they used to be, then we need to find out the following reasons:

i) Over charging
This is the main reason of the decreasing capacity, even the best rechargeable batteries could not avoid the peak voltage from dropping off much quickly as it was new one. Put it the simple way, the more time we charge the battery, the peak voltage become lower, especially those high drain electronics. These electronic devices will consume higher voltage if a reused batteries are utilized.

ii) Usage period
We know very well, the rechargeable batteries are built not to last. Although it is claimed that a new battery can be recharged 1000 times before it runs out from its life span. However it still follows the declining graph where every time it recharges, the lesser the capacity it holds. Eventually they will be going to be less effective as compare as they were before.