I'm running a 6V, 2300 mAh NiMH battery in my Raptor 50.

Futaba FASST rx
Futaba 9252 x 4
GY401 w/ 9254
Multigov
Align step down gadget to 5.1 for tail servo.

Full charge, the voltmeter reads 6.7 to 6.8 volts under load.

In 4 to 5 flights, my voltmeter is reads close to 6V and I quit until I recharge.

My question is whether or not I am being too conservative. Can I safely fly down to 5 volts?

If I was running a 4.8V battery I would fly until I was near 4.8 volts.

I think you answered your own question. That is what I would do. I will let people with more experience in batteries be more specific.

Rafael

6v is a good time to stop. You can safely get in one more flight at 6v but once it gets under 6v it will start to fall off quickly (not in one flight). Anything under 6v is time to park it.

Thanks BZ.

What I do is this (rightly or wrongly)

Make a couple of full tank flights then re-charge the battery and see how much has been put back in. (mAh).

It's not 100% correct, but it will give you a fair guide as to how many flights you can safely make.