3. OVERDISCHARGE – overdischarging by itself is not dangerous, but it will destroy the cell. Overdischarging below the recommended cutoff voltage will cause the copper to start dissolving in the electrolyte. The dissolved copper will then start plating on electrodes which may start an internal short circuit within the cell. The safety of the cell is compromised once this plating starts and the next charge/discharge cycle will be of concern (see internal short circuit).

Don’t store you cells completely discharged. All cells have a small self discharge when left alone and if the self discharge takes the cell down below its minimum voltage, then the cell will be destroyed. It is also a great idea to disconnect the battery from all electronics (remove from speedos, disconnect lipo receiver packs from regulators etc) since most electronics have a small current drain even in the “off” position.