You could try throwing a capacitor in place of the battery. It won't help in case of a power outage, but neither will a bad battery...
On Sat, May 23, 2015, 12:19 PM Jerry Biehler <[email protected]> wrote: > No, assuming the battery charger is even a remotely recent design it is > measuring the voltage of the battery so you would have to have something > there for it to measure. And I am pretty sure these chargers are actually > pretty smart. I have one of these fios boxes too. > > On Saturday, May 23, 2015, Dawes, Andrew M. <[email protected]> wrote: > >> You would have to fake out the battery charger into thinking it is at >> voltage. >> >> Yes, so I guess my question was: would a zener diode rated at the battery >> voltage do that, or does it depend on the implementation of the charger? >> >> They have tested good used batteries that will fit at surplusgizmos >> for $10. >> >> Good to know, thanks! >> >> -Andy >> >> >> >> On May 23, 2015, at 11:29 AM, Dawes, Andrew M. <[email protected]> >> wrote: >> >> I have a battery backup system as part of my Fiber-to-the-home service >> from a certain regional telecom provider. The battery for this system is a >> 12V sealed lead-acid battery (not unlike a golf cart or scooter battery). >> The trouble is that there is a system alarm when the battery “wears out” >> and needs to be replaced — it’s been beeping every 8-9 minutes for the past >> few months. I’m not really interested in consuming another battery for no >> real reason (I don’t need backup because if the power is out at my house I >> have no need for internet access). That said, I’m thinking of a >> non-destructive way to trick the charger/alarm circuit into thinking it has >> a fully-charged, new & happy 12V battery. >> >> I don’t know much about lead-acid charger circuits but I suspect some >> sort of current-limited voltage-regulated supply that alarms when the >> battery no longer holds 11V or some other specified threshold. >> >> Would a simple 12V zener diode work, or would a charge circuit just >> dump a wasteful amount of current into the diode? Perhaps a 13V zener so >> that no current even flows? I have easy access to the battery terminals, >> and medium access to the rest of the circuit. >> >> I’m ok with mangling the alarm itself, but I’d prefer a nice >> “plug-n-play” solution since I know at least three friends in a similar >> situation who aren’t as destructive. >> >> -Andy >> >> >> >> -- >> Andrew M.C. Dawes >> Associate Professor of Physics >> Pacific University >> amcdawes.com >> >> _______________________________________________ >> dorkbotpdx-blabber mailing list >> [email protected] >> http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber >> >> _______________________________________________ >> dorkbotpdx-blabber mailing list >> [email protected] >> http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber >> >> >> -- >> Andrew M.C. Dawes >> Associate Professor of Physics >> Pacific University >> amcdawes.com >> >> _______________________________________________ > dorkbotpdx-blabber mailing list > [email protected] > http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber
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