Battery voltage sag

ArduCopter Copter 4.0
1

Bit of a newbie. 4S 500 mAh Li-Po on an X500 quad. Battery discharges relatively quickly so I get voltage warnings quite soon after taking off. But when the quad lands, the voltage recovers straight away to a

Voltage
Voltage1167×510 119 KB

respectable level. I am familiar with the concept of voltage-sag but does the log file (attached) indicate that my battery is probably worn out? Thanks

2

4S 500mah battery on an X500 size quad? Do you mean a 5000mah battery? What C rating?

3

Apologies. Yes 5000mAh. 100C

4

Ah well plenty of current available then! That graph is a good case for it being shot.

5

Thanks. I will get some new Li-Pos