rdalemercer
Member
JoshMaxAmps -Dale,
There is a reason that the cutoffs are based on voltage rather than mah. Every lipo battery runs within a window. Lets say this is an 8000Mah pack. The over all amp load is going to determine how much mah you can draw. If you are running a high amp draw flight application the pack will sit under load at a lower voltage than if that was used to power say a light bulb. Here is where the window comes into play. You get to use the mah that is available within the pack until you hit the cutoff voltage. That window is smaller for the higher amp draw applications. Where with the light bulb you will likely see the full 8000mah or maybe even more, the high amp draw application may only see 4000mah in that time frame. This is why running high mah, high C rated packs can be so beneficial as they will hold a higher voltage under load. Providing you with that larger window.
Hope this helps!
Thanks for the explanation. I guess the voltage cutoff is set to a safe point based on the amp draw. High amp draw = quicker achievement of the first stage of 'notice' from the NAZA that I need to start paying attention - it just doesn't seem to correlate with the number of mah that I have used (put back into the battery).
The reason that I was thinking that a telemetry system can tell me status of my battery is by reading the mah used (read :fuel gauge). Maybe my thinking is mis-guided, but from looking at videos that are shot with the EzOSD, they seem to allow the pilot to see how much capacity of the battery has been used as way to monitor how much flight time is remaining.
Dale.