Question about ESC with auto-sense

[nic]

Hi electronic experts...

Here's a question that is puzzling me.
I have recently acquired a JES020, which is giving me some prob... (unsure if it is the culprit yet..)

But anyway... when I read the specs...
it says, JES020 autosense the number of LiPos that I am using.
2 Cell, it will cut at 5.2V
3 Cells, it will cut at 8V

For a fully charge 2cell, it will be about 8.4 V... will the ESC be dumb enuff to think it is 3 cell and cut the power at 8V?!?!?!

I am getting a little suspecious about this because, the power cuts just love to occur with my fully charged up 2S2P, or a rested 2S2P with minimal power drain. And the ESC doesn't give prob after a few power losts (i.e. a cell which I fly for a while), till I plug a another fresh cell in.

Each power lost can be recovered by a reset.. i.e. giving it a zero throttle. I don't seem to have lost the controls to my plane... the servos were responding fine, even when power to motor is cut.

Anyone using JES020 face this problem?

[PhiBeR]

Dunno wat ESC is that...

But i think u better try another ESC to see if really the ESC is the culprit of ur prob..
Lipos supposed to stop at 3V/cell..

Any lower and it goes quite dangerous to overdischarging ur cells...
5.2V = 2.6V/cell which is seriously low lor..

The way u describe, it's my guess it's the auto-sensing culprit..

[loyn]

That is why I don't really like the idea of auto detect for cell count. I use CC brushed ESC with manual program for cut off which give me confidence in the cut off voltage. This is important especially for lipo cell , whereby overdischarge means dead battery for good. On the other hand you can always limit the flight time to prevent over discharge.

[nic]

hmmm now.. who want this lemon....

Fed up already... just completed soldering my 480... going to use this back until can afford a CC...

[loyn]

Woooooo........ can smell the lemon even from here ....... Hahahah sorry just can't help it !

[nic]

Not that bad lar... it ain't that expensive as a CC, and I can still use it for 3S.... or maybe as a BEC...

[loyn]

Wow a real expensive and high tech BEC

[nic]

Yup.. prob solved... used back my 480... no issues..
looks like I really have a huge lemon... going to keep it to power 3S....