MODEL SCH608F LED 1 HOUR charger Input 100V-240V 50/60Hz DC12V USB5V Input form Desktop. Universal plug and car charger LED indication status: Red LED on梒harging Blue LED on梖ully charged and on trickle charging Red and Blue alternatively alarming桝lkaline and defective battery End of charge detection -Delta V, 0 Delta V, Temperature termination, Timer, Charging current AA X4 1000mA AAAX4 1000mA Battery Rescue function Yes-Unique function(blinking impulse) to rescue or revive old infrequent used NI-MH batteries