hey, instead of getting that Turnigy watt meter, you should buy two of these instead. It's much better. It will tell you the voltages of the individual cells which is what you need. These weren't $15 when I gave you the advice. These have come down in price since then.

http://hobbyking.com/hobbyking/store...itor_2-8S_Lipo

You'll need an 8S cable harness for both of them. This one is only $6.50
http://cgi.ebay.com/5pcs-8S-Lipo-bal...item2306f4d7c1

You need the cable because you are going to want to be able to unplug the cell log monitor when you aren't using the batteries because otherwise they'll run the batteries down.

And last, I recommend getting either piezo buzzer...it's an alarm that can be hooked up to the cell log monitor and it will go off when one of your cells get to 2.5v. Something like this. It's only $3.50
http://www.radioshack.com/product/in...ductId=2062397

Or you could wire the cell log monitor into a key switch like another forum member did. Or even another option is to not buy the piezo buzzer but get extra long wire so you visibly read the cell log monitors so you can see when one of the cells gets low. The monitor has it's own alarm too but I think it's pretty low. I'm still saving up money myself to buy one...I should be getting one pretty soon.