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SQRT(-2) · 07-21-2009, 09:47 AM

I have looked up the specs for the ESC, and according to

http://www.alibaba.com/product-gs/22...rade_Part.html

It has 'over discharge protection' Does this mean the ESC will not allow you to over discharge the battery? Anyone with a brushless system know?

Thanks

Dusty1000 · 07-21-2009, 10:55 AM

Does this mean the ESC will not allow you to over discharge the battery?

It will likely be a low voltage cut-off, which is a common feature of esc's, but all the same it's not something you would rely upon to know when to land since your heli is likely to drop out of the air if it kicks in...

It will most likely be set at a voltage lower than the battery would be when it has enough power for flight so it won't be too important.

Dusty

SQRT(-2) · 07-23-2009, 09:13 AM

It seems to cut off at 3.2 volts, a point at which I can't get off the ground with the brushed motor, and I can -just- leave the ground with the brushless. I think I ruined this battery, and need to get another, my RnD budget for this Heli keeps growing.

DonDuc · 08-07-2009, 10:34 AM

Dusty is right, if the low voltage protection kicks in, the heli first starts to spin and then drops out of the sky.
I had this happen two or three times until I noticed that one of my batteries was dying after about half the usual flight time.

Don

07-21-2009, 09:47 AM	#1 (permalink)
SQRT(-2) Registered Users Join Date: Jan 2009	ESC question I have looked up the specs for the ESC, and according to http://www.alibaba.com/product-gs/22...rade_Part.html It has 'over discharge protection' Does this mean the ESC will not allow you to over discharge the battery? Anyone with a brushless system know? Thanks __________________ Gaui Hurricane w/ 530mm blades & Robird G31 Walkera Super CP Walkera Devo 10 w/ Deviation

07-21-2009, 10:55 AM	#2 (permalink)
Dusty1000 Registered Users Join Date: Sep 2008	Does this mean the ESC will not allow you to over discharge the battery? It will likely be a low voltage cut-off, which is a common feature of esc's, but all the same it's not something you would rely upon to know when to land since your heli is likely to drop out of the air if it kicks in... It will most likely be set at a voltage lower than the battery would be when it has enough power for flight so it won't be too important. Dusty __________________ Blade 400, mSR, mCPX - Sonix SX450SE - Walkera 1#A, 4#3, 4#3A, 4#3B, 4G3

07-23-2009, 09:13 AM	#3 (permalink)
SQRT(-2) Registered Users Thread Starter Join Date: Jan 2009	It seems to cut off at 3.2 volts, a point at which I can't get off the ground with the brushed motor, and I can -just- leave the ground with the brushless. I think I ruined this battery, and need to get another, my RnD budget for this Heli keeps growing. __________________ Gaui Hurricane w/ 530mm blades & Robird G31 Walkera Super CP Walkera Devo 10 w/ Deviation

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08-07-2009, 10:34 AM	#4 (permalink)
DonDuc Registered Users Join Date: Aug 2008	Dusty is right, if the low voltage protection kicks in, the heli first starts to spin and then drops out of the sky. I had this happen two or three times until I noticed that one of my batteries was dying after about half the usual flight time. Don

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