What battery to use for RF receiver

[jsciii]

I am working on a project that uses a Wireless Remote Control Switch. Here's the link to the one I bought:

http://www.dinodirect.com/DC-12V-Wireless-Remote-Control-Switch-AK-RK01S.html


The specs say it requires 12V DC at an Operating Current: ≤ 6mA

I need a disposable battery to power it that will last a long time (100 plus operations). Can someone suggest what battery I should use?

Thanks
JCIII

 

[(*steve*)]

How long is 100 operations? 100 seconds, or 100 days?

Also 6mA may be the quiescent current, but I bet that rises to 30 to 40mA (or even more) when it switches on (due to that relay)

I'd start with 8 AA batteries and hope it lasts a couple of days.

 

[duke37]

I looked at the link and it cocked up my computer.

 

[davelectronic]

Remote switch

I looked in on the link, seems ok to me, early for me look in again later, link looks ok to me.
Dave.

 

[jsciii]

By 100 operations I mean energizing the board 100 times by pressing the remote. Could happen in a day or a year depending on usage.

For the battery I am considering two 6V large Duracell batteries but since they are quite large I'm hoping to find a single 12V battery that would work.

Would it be possible to use one 6V battery instead?

Thanks for the help.

How long is 100 operations? 100 seconds, or 100 days?

Also 6mA may be the quiescent current, but I bet that rises to 30 to 40mA (or even more) when it switches on (due to that relay)

I'd start with 8 AA batteries and hope it lasts a couple of days.

 

[(*steve*)]

The device apparantly draws 6mA in the quiescent state, therefore it will draw about 144mAh per day.

If you used a pack made up of (say) 2500mAh cells, they would last about 17 days (moe than I thought).

Assuming the relay doesn't stay actuated for very long, the additional current it requires would not be significant.

For any battery that you find, look at it's rating in mAhr and divide by 144 (or if in Ahr, divide by 0.144) to get an approximate lifetime in days.

The energy storage of non-rechargeable batteries can be tricky to find, but most manufacturers hide away datasheets that you can find if you're persistent.

The device is rated for 12V, you can't easily run it from a 6V battery.

 

[jsciii]

Thanks, that is very helpful and makes sense.

It's also disappointing. I need the receiver board powered 24/7 so that when the transmitter button is pushed the receiver engages the switch.

Can you offer any advice on how to power it? House power is not an option so battery is the only way I can think to go. I am considering adding a manual switch that would be turned on which would then provide battery power to the board and then the button would be pushed but that would be a shame since ideally the board is always on and waiting for the signal.

Thanks again.
JSCIII