Panasonic rechargeable tagged battery cells 12v 600 7000mah panasonic kr 7000f this 7000mah rechargeable tagged cell from panasonic is a high quality nickel cadmium battery equipped with a z solder tail manufactured with an operating temperature range of 20 to 60degc and voltage of 12v for exclusive use with cordless power tools used in medical emergency and alarm systems panasonic kr 7000f nicd f size cell tagged rechargeable 12v 7000mah