* Charges 1 cell to 24 cell Nicad or Nimh battery packs(1.2-28.8V). 
* Charges any cell capacity from 50 mahr to 7,000 mahr. 
* Charge current  adjusts from 50 milliamps to 8 amps. 
* Charge Mode has Auto-Peak and 10 hour time limit. 
* Discharges at 1.25 amps and has Auto-Turn off. 
* Digital Display of Charging Amps from 50ma to 8 amps. 
* Digital Display of Nicad Voltage from 500 mv to 40 volts.
* Digital Display of charge/discharge time, hrs, min. and sec. 
* Digital Display of total mahr of charge into or out of battery. 
* Digital Display of maximum voltage reached (voltage peak). 
* Charger works with any 12 Volt automobile or truck battery. 
* Charger works with Astro Model 120, 13.8V power supply. 
* Protected from reverse polraity on both input and output 

Note: This charger requires either an external 12VDC Power Supply or Battery, it does NOT plug in to 110V AC power.