Poweradd 903A 4 Bay High-Speed Intelligent Battery Charger with LCD,Smart Rechargeable Battery Charger for AA AAA NI-MH/NI-CD Rechargeable Batteries (Batteries Not Included) LCD display indicates the whole charging process of each battery more clearly, individual compartment makes charging 1 or 3 batteries everytime to be possible, no more need to charge batteries in pairs. Build-in Intelligent microchip controls the whole charging process, makes rapid charging convert into tickle charging mode when the batteries almost fully charged, better prolong your batteries' life. Charge 1/2/3/4 AA AAA NI-MH/NI-CD rechargeable batteries more easily and quickly than other universal chargers.(Unable detection non-rechargeable batteries) Auto power off after batteries beging fully charged, no more need to wait in nearby and worry about charging safety. Multi-protection system gives you a sense of security from preventing the overcharging, overvoltage, overcurrent, overtemperature and short circuit, durable and reliable.