I'm working on an agricultural pump monitor project using a microcontroller. It needs to be able to operate ~1 hour after power failure, and signal same.
I'm hoping there are maybe single chip, or simple circuits using a smart chip, that will continually charge/monitor the 3.6V 700MAH battery, then to assume load on failure of the DC input power. My searches are returning overnight, timed, and wall-plug discrete cell chargers.
Is Maxim 712 my only $$ choice?
Any suggestions appreciated.