MS3C-300TSB-B, Replacement Battery

MS3C-300TSB-B Lithium-Ion Battery Maintenance When not in use, store battery in a dry, room temperature environment. For safety, unplug the battery once charged. Do not expose to extreme temperatures for an extended period, as it will decrease the life span of the battery.  Estimated charge time is 1-2.5 hours, depending on existing charge level.  Keeping battery plugged in when fully charged or completely draining the charge on the battery, will reduce lifespan.   Under normal use and storage conditions, battery will last approximately 2-2.5 years    Specifications: Operating time: 1.5 hours (Equivalent to 200+ flights of stairs) Lithium ION Battery, recommended storage: do not store fully charged, or fully discharged for an extended period of time.  It may affect the longevity of the battery.