Or, for about the same money, you can get a VoltWatch and get an accurate reading from the load your electronics put on the battery. And it won't burn your finger when you touch it.
For bench testing a battery, I use 15ohm 10W wirewound for testing. It gets hot. I use this for a load on a pack so I can test individual cell voltage.
For day to day use though, A voltwatch or a comerical loaded expanded scale volt meter are two inexpensive and accurate ways to check your battery. The first does it all the time and the later when you remember. As you should do a check prior to every flight, digging out resistors and leads and meter to check you battery at the field would be a real. A volt watch is about $10 and Tower expaneded scale is $8.00
http://www3.towerhobbies.com/cgi-bin...?&I=LXNK82&P=7 Cant get much cheaper and if your meter blows off the bench, or you step on it, you haven't lost much.
Don