Cylindrical Cd-Ni Rechargeable Battery Long service life with over 500 charge-discharge cycles can be expected. A stable voltage delivery for all battery-operated equipment. Low internal resistance that allows high discharge. Operate with a broad temperature range from -18--+50. Long storage life without noticeabke loss of performace. Ability to withstand continuous C/10mA overcharge. Self-sealing safety vent can release excessive pressure inside the cell in case of abusive usage.