crwdns2934241:0crwdne2934241:0 Richdave

crwdns2934249:0crwdne2934249:0:

there is an internal battery that keeps the date/time "alive" when the power is off or main battery removed.  Its a BT900 lithium

I have the manual so wait while I post the detail for you

crwdns2915684:0crwdne2915684:0:

open