Re: Advice needed regarding circuit with SLA batt in tin shed
- From: Rich Grise <rich@xxxxxxxxxxx>
- Date: Sat, 03 Dec 2005 20:16:17 GMT
On Sat, 03 Dec 2005 15:57:39 +1100, Jason S wrote:
> Need some advice!
>
> I am designing a circuit for a small tin shed that requires backup power
> from a 12V SLA battery. It's an alarm with added features such as LED
> lighting and other additional features.
> All the circuitry will be in a "IP65 Sealed ABS Enclosure" (Size HB-6132)
> from Jaycar Electronics, which has pretty thick walls, and inside the box
> will be a small 12V SLA battery that will be kept on float charge (for
> backup) and the PCB's to make it all work, including the power
> supply/charging circuit.
>
> My concern is the heat in the shed which may affect the SLA's performance.
I can't really add to the others' advice here, other than, "ventilate the
shed" and "shade the shed". What's it cost for a bit of corrugated metal
or sheet metal to put a "false roof" over the shed? "45-50 degrees celcius"
is really quite warm - what's the outside air temp. when it's like this?
I also like that other poster's suggestion about using photovoltaics,
which could serve double duty.
Good Luck!
Rich
.
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