CTECHI AA NiCd 1.2V 700mAh Battery main features including Long service life (Ni-Cd batteries provide more than 500 charge/discharge cycles). Stable discharging voltage (Discharge voltage remains stable even in conditions of high-rate discharge current). (For equipment needing a high-rate discharge current, its far more stable than other battery types). Wide temperature range (The cell possess super efficiency and durability for both high temperature and low temperature operations, with the range from -10 to 70). Super storage performs (After 1-month storage at 20±5, a fully charged cell can still deliver approx 70% of its nominal capacity). Built-in safety features against misuse (Built-in chemical protection against polarity reversal or over discharge. A resealable safety vent is incorporated to relieve internal pressure in case of misuse).