I have a 12vdc backup battery that I'm trying to use to backup an 8vdc phone system (300mAh). So no vehicle startup involved.
This almost seems too simple to ask, but I'd like to get it right the first time and I only dabble in this stuff with the help of those that know more than I.
Thanks.
This almost seems too simple to ask, but I'd like to get it right the first time and I only dabble in this stuff with the help of those that know more than I.
Thanks.
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