Hmmm... good to know. But what about nimh? They definately dont stay at 1.2v /cell. Say halfway through the pack they measure 1.1v. If the BEC is putting out 6 and the Rx pack 5.5, wouldnt that stress the BEC current too? It obviously wouldn't be bad for the batteries. The alkalines were in fine shape when I took them out, so I'm guessing they weren't damaged. O well... I'm done w/ this problem. I'm sending it off to Mike ASAP. I am sick of having a many multi hundred dollar savage sitting on my desk w/o an ESC.


JB

Well, not really because the BEC won't let the Rx pack get that low. As soon as the Rx pack voltage drops even a little below the BEC voltage, there will exist a difference in potential and current will start to flow and will start to "trickle charge" the Rx pack. The net effect is that the battery probably won't drop below the BEC voltage much.

Honestly though, I wouldn't even use the BEC because it's just that much more heat for the ESC to dissipate on that little heatsink, which should be reserved to cool the ESC output devices. Personally, I would just disable the built-in BEC. Then you can use any Rx pack type you want.

It is true that you can use a receiver pack in addition to the BEC according to the instructions. The instructions ALSO state that the bec is only rated for 12 cells. So...if you have over 12 cells, you shouldn't technically be using the controller's BEC at all(with or without "assistance"). Under 12 cells, and you can use a receiver pack for "help". It really only makes sense to run a receiver pack AND the controller's BEC when using 6 or 7 cells. 18 cells using the controller's BEC is asking for it, as the controllers BEC unit must "dupmp off" the extra voltage(20+ volts input vbs. 5.5volt output = 15+ volts worth of extra energy to dissipate) as heat.