Charles & Sandra Cohen
From the IC-7000 Operating Manual, p. 137:
All of the CPU’s memory is backed up by an EEPROM
(Electronically-Erasable Programmable Read-
Only Memory). All data you set, such as VFO,
memory, set mode contents, etc. are stored in this
EEPROM. There is no internal lithium battery.
. Charles / VA7CPC