A complete four channel battery management system Charges all manufacturers battery packs, 12 to 14.4V,
    NiCd or NiMH 
     Discharges all battery types to proper voltage
    cut-off
     Battery Rescue mode revives abused or over
    discharged batteries 
     Analyze mode shows capacity out on discharge and
    capacity in on charge
     Low voltage cut-off indicator identifies damaged
    cells
     Regulated built-in 70 watt power supply with
    adjustable voltage
     Bar Graph Ammeter in power supply mode
     Back lit alpha-numeric LCD display
     Auto Maintenance Charge 
     Reverse polarity protection
     Auto voltage select worldwide
     Light weight: 3.5 lbs. (M2100), 4.0 lbs. (M2100A)
     Compact: 10" x 6.25" x 2.75" (M2100),
    10" x 7" x 4" (M2100A)