Advice on large battery for remote CCTV

[Jackster]

Hi all,

So I am in need of a battery or two to put into a shed for CCTV over night (will be left on 24/7).

The 2 bits that need power are a CCTV camera and an access point.
They draw just under 500mAh together.

So I was thinking of getting 2 12v 12Ah lead acid batteries.
That would give us enough for 24 hour, would replace the battery every day (this is not a long term thing...)

Can then charge it overnight/during the next day.


So what charger to get?
I don't want to spend anything over £10 as the batteries are already eating into my budget.

Already got a powerful 30A 12v supply in the house that is always on, so could I use one of them solapanel regulators to charge the battery?
Something like this? http://www.ebay.co.uk/itm/Solar-Charge-Controller-Panel-Battery-Regulator-Safe-10A-12V-24V-UK-STOCK-/360684563165?pt=UK_Gadgets&hash=item53fa79aadd

Will be useful if I do then get a panel or two on top of the shed...

Any other ideas?

[cosmicray]

The 2 bits that need power are a CCTV camera and an access point.
They draw just under 500mAh together.

So I was thinking of getting 2 12v 12Ah lead acid batteries.
That would give us enough for 24 hour, would replace the battery every day (this is not a long term thing...)

Can then charge it overnight/during the next day.

Are these sealed lead acid batteries, the kind that you is in large lanterns or children's toys ?

Those kind usually have a data-sheet that tells you maximum charging current, etc. Also, and depending on the battery specs, you may not want to draw the battery all the way down. I have a system that uses flooded lead acid batteries, and I always pull them for charging at 50% of the rated Ahr. Trying to use a 12 Ahr battery for 24 hours @ 0.5 A may damage the battery. Check what the data-sheet says for that particular type as to depth-of discharge vs life.