Primary battery or full charged secondary battery, when put aside for a period, it is capacity will decline or lose, this phenomenon calls self discharge that is electricity flee away. It is decided by the inner electro-chemistry system, similar to water leakage from pond or reservoir.
A decrease in battery capacity which occurs without any current flow to an external circuit. Typical values:
----0~ 1% per day for NiCd
----0~ 2% per day for NiMH
----0~0.5% per day for Lithium Ion and Lithium Polymer |
