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battery pack is charged or stored which may cause deterioration of the battery pack to shorten the life span if it is handled improperly. Note the tips below to make the battery pack last long.
—Be sure to charge the battery pack before using it if the battery pack is used for the first time or if it has not been used for a long period of time.
—If the battery pack is repeatedly charged, the life span becomes short. To avoid the repetition of charging the battery pack, be sure that the remaining capacity is low before you start charging.
—Be sure to charge the battery pack in recommended temperature range. The temperature range is dependant on device you use to charge including battery chargers and handheld terminals. Refer to the respective user guides. Charging the battery pack in a temperature outside of the recommended range causes deterioration.
—When used at low temperatures, the battery pack has a reduced capacity and will supply power for shorter time.
The life span of the battery pack is also shortened.
—Charging the battery pack while the battery pack itself is freeze including inside causes deterioration. Be sure to resume an ordinary room temperature on the battery pack and then leave it unattended for approximately one hour before charging.
—After charging the battery pack, if the performance of the battery pack does not show any recovery, it is a sign of ending the life. Replace it with a new battery pack.
—Avoid the battery pack with a full of the capacity to store for a long period of time. If you need to store it for a long period, be sure that the remaining capacity is 30 to 50 percent and to store in a moderate low temperature. This can reduce deterioration.
—The battery pack gradually deteriorates over time. In particular, storing (or using) the fully charged battery pack at high temperatures tends to accelerate battery pack deterioration.