Systems Manual 13Tips forExtendingBattery LifeNickel Metal Hydride (NiMH) batteries will better hold a charge ifallowed to discharge at least once a week. The chemical reactions thatcorrespond to charge and discharge in a rechargeable battery shouldoccur to obtain the maximum number of charge/discharge cycles inthe battery. If a battery is removed from the scanner and stored, itshould be fully charged when stored. Batteries will lose the ability tohold a charge when stored for long periods of time (weeks, months, orlonger).Batteries will typically have about 30% charge capacity when shipped.To assure maximum usage, the battery should be fully charged beforeuse.Store your battery in a cool dry place. Do not leave your batteryexposed to direct sunlight or temperatures below 0°C (30°F) and above38°C (100°F).Disposing ofBatteriesThere presently are no US, North America or World disposal require-ments for NiMH batteries, so when they won't hold a charge anymore,the batteries can be disposed of, preferably through a recycling center.Four StationChargerIf you have a Four Station Charger, batteries are inserted for chargingas shown in Figure 7. A 90% rapid charge can be achieved in only twohours when using this optional accessory; half the time than when aBase Station is used for charging. The LEDs at each battery stationoperate the same as the CHARGE LED on the Base Station, with rapidflashing indicating that rapid charging is taking place and on steadyduring trickle charging or when the rapid charge cycle is finished.NOTEBatteries will not charge if their temperature isbelow 0°C (30°F). If a battery that is too cold isinserted into the Base Station, the Charge LED willnot illuminate.NOTEIf you insert a battery into the Four Station Chargerand no LEDs illuminate, the battery may be toocold. Batteries must be at 0°C or higher to charge.Do not attempt to charge cold batteries, since plac-ing them in the charger will curtail the charging ofother batteries already present in the unit.