Is It Better to Store Batteries Charged or Uncharged
Even a new battery should be periodically charged. The Nickel-based batteries like the eneloop batteries can be stored at any state of charge. Dead 18 Month Old Battery Restored Better Than New Car Battery Dash Lights Cycling Led If the battery is fitted with a safety circuit and most are this will contribute to a further 3 self-discharge per month. . The good news is that the charge level for storage is not critical for this chemistry so simply apply some charge if the battery is empty and store it in a cool and dry place. If you are going to be storing batteries for a long time leave them about half charged. If the batteries are too hot 105F or higher or too cold below 40F the batteries will not take a full charge. I charge them up when done and leave them for the next week. Storing them at full charge will drastically shorten their life. You need to store them fully charged and since they quickly loose their capacity ch...