Re: I need a low voltage expert

[obmcclintock <flax@xxxxxxxxxxxxxxx>]

On Jun 30, 4:20=A0pm, nick markowitz <nmarkow...@xxxxxxxxx> wrote:
> On Jun 30, 5:00=A0pm, obmcclintock <f...@xxxxxxxxxxxxxxx> wrote:
>
> > I have a technical question about low voltage in an alarm system. I
> > have a 10 year old radio shack 8 zone burglar/fire alarm panel with a
> > small rechargable back up battery. I would like to replace it with a
> > larger wet cell battery just in case our power is out for quite a
> > length of time. I will place it in a vented box close to the panel. My
> > question is; Can I use a battery much larger in size and amp hours
> > than the little one as long as the voltage is the same- 12 volts? Will
> > I run the risk of burning something out as I can not afford to replace
> > it now that my work is becoming scarce. Please can someone help me
> > with this question, thank you!!!
>
> No can do must use a lead/gel acid battery or risk of fire.
> the panels charger is not designed for wet cells.
>
> could put a bigger lead/gel =A0acid in most panels can handle 7-10 amp
> battery no problem.
> if you do put bigger than that =A0the charger in the alarm panel will
> never be able to keep up proper charge and burn out.
>
> you could set up a wet cell and separate charger and then shift it
> over with a relay to burg panel but not economical to do so and must
> be done so very carefully or risk of fire damage. best bet would be to
> get 1000 or bigger VA =A0UPS uninterpretable power supply and plug alarm
> into it . about $150.00
> this way UPS battery will hold panel up then when its battery runs out
> the panels battery takes over have done this many places and it works
> very well.

Thank you very much Nick, I appreciate it !!! obmcclintock