HR-4U-900 - 

Despite discharge capacity that is virtually equal to that of conventional dry cells, Sanyo Twicell batteries feature minimal internal resistance and exhibit excellent discharge characteristics under high-rate discharge current conditions. With output power much higher than that of dry cells, Twicell batteries can withstand more than 500 repeated charge/discharge cycles, as well as offering outstanding economy. In addition, even though the batteries are stored for a long time, the original capacity is almost recovered by repeated charging/discharging, offering excellent storage characteristics.