Need it to run an Arduino with a Gprs module and LED - Should it matter or will it still work regardless?
Was thinking of something like this;
Thanks.
Sure, it will work.
Depends however on how long you expect it to work on the batteries.
What is the peak current demand of the GPRS module? Can the batteries provide this much current - possibly,
you must check.
Can that style of battery holder handle high current reliably? In my experience no, it won't.
Yeah, it should work.
Those battery packs aren't great for high current - but how much current do you need to get out of it?!
Between the wires going to a battery pack like that, and the on-board regulator, I think the regulator is the weaker link, in terms of current handling capacity.
I think AA alkaline batteries are typically rated for like 2000mAh - I don't know what the average current the GPRS module uses would be (depends on the module and what it's doing - they use much more current when transmitting than when idle), though.
Yes, that battery holder should work. As the others have said, however, you have to make sure the actual batteries you use can supply the currents required by your load for the length of time you want your project to work.
Which GPRS module are you using? I'm selecting one right now for a project. There seem to be many based upon the SIM900 for the Arduino. Since the SIM900 says it requires 2A peaks I need to make sure that I have enough power and capacitance to supply that. Since my TL-4903 batteries have maximum life when discharged at 1mA, I'm going to have an awful lot of capacitance.