Not sure, it seems on mine it could actually detect a battery that was not so hot even though it had a full charge. After a few days it would start beeping at me again. And for $10 you really cant mess around with tricking the system.
-Jerry > On May 23, 2015, at 4:35 PM, Jason Barnett <[email protected]> wrote: > > 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 > _______________________________________________ > 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
