I think most guys make 2 or 3 flights then put the volt meter on the receiver battery and think...well, I better quit now. The meter is reading this or that. Why don't you try making your 2 or 3 flights some time and then set there and move the controls till they no longer work and you will find those batteries are still good for longer than you think. I bought a volt meter and found out I don't even use or like it. It might tell me it's at 4.8 or 4.7 but it sure don't tell me how many more flights I can still get out of it before it actually goes dead!

Very seldom does anyone where I fly crash a plane and blame it on actually dead batteries. It's usually pilot error.

I'll take experience over what those volt meters read anyday!