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battery change?

How can I change the backup battery on my Optima plus system. step by step please.
Keith Hopwood, October 2007
undo the cover of panel. tamper alarm will sound. enter your code. remove leads from battery (they ust push and pull off). then insert your new battery the same way. replace cover of panel. press reset

doddsy, October 2007
link Click here to see other fixes for Optima.