At last! An intelligent charger for rechargeable batteries. No more over-charging Rechargeable batteries can be damaged by over-charging. This device prevents that happening. It can also refresh batteries to return them to their maximum charge & it can charge both AA & AAA batteries at the same time. It can handle a maximum of two batteries of each size. So you can simultaneously charge four batteries. But you can also charge single batteries if you wish. This handy charger also has an LCD display for each battery. The easy to read LCD display shows the current & the status of each battery. The T1 charger can be used in one of four different modes; charge, discharge, refresh & test). Never be without battery power again. This great value charger will be great for keeping in the kitchen, workshop or office drawer. Quickly recharge your batteries whenever you need them & keep all your devices running. Please note: No batteries are supplied with the unit Features Input: DC 12V/1.5A. Output: Ni-MH/CD 4 x AA/AAA (0.2A/0.5A/0.7A/1A). USB (Universal Serial Bus) output: 5V/1A (Not power bank). Function: Capacity test; discharge; refresh; charge. -dv detection, bad battery detection, short circuit protection. Over-charge, over-voltage, over-heat protect function. AA & AAA battery charger. USB (Universal Serial Bus) port. UK adapter. Fast charge. Smart testing.