Tech B TBBC8201 AA Rechargeable 4-Pack NiMH Batteries with Wall Charger Plus 4 Free Alkaline Batteries Batteries can be used in a wide variety of devices like remotes, toys, radios, flashlights, pagers, calculators & more. Charging time is less than 1.5 hours per battery. LED indicator lights shows lets you know charging status. Comes with 4 FREE AA Alkaline batteries. Size: AA CCC, CE, UL approved.