Change Battery On 2004 Honda Accord LX Key Fob October 3, 2016Electrical, HondaCR1616 3V, Duracell Battery, Energizer battery, Honda Accord 2004, Honda Key Fob, Key fob battery, Philips Screw driver . No Comments, 242 views After 12 years, the battery on our 2004 Honda Accord LX key fob was dead. The battery part number is CR1616 3V. We need a small Philips head screw driver to remove the cover. Make sure the battery is inserted correctly with + and – side.