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HelicopterMain Discussion › Triton discharge problem
10-20-2004 10:51 AM  13 years agoPost 1
raknin

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Israel

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I discharge my 9.6V 600ma reciever battery through the transmiter jack. I set the discharge current to be 0.2A and the cut-off voltage per cell to 1.1V. When the discharge operation was close to finish I notice that:

1) The discharge capacity was going over 600ma it become 601,...,610 and up.
2) The Battery voltage start to drop below 8.8V (i.e. 8.4V and down), although I set the battery cutoff to be 1.1V/cell.

So I stop the discharge operation immediately not to damage my battery.

Is this a normal behaviour?

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10-20-2004 10:58 AM  13 years agoPost 2
Ross R

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Rochester NY

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The triton cutoff needs to be set for the pack, not the individual cells.

For a 8 cell like you have (TX battery) this would be 1.1V/cell
1.1(8) = 8.8V
This is what the cutoff on the triton needs to be set to.

If you didn't stop it your pack would have been discharged to 1.1volts

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10-20-2004 11:12 AM  13 years agoPost 3
raknin

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Israel

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Ross ,

Can you explain how can I set it.

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10-20-2004 11:20 AM  13 years agoPost 4
Ross R

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Rochester NY

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It's the menu that you used to set the cutoff to 1.1 in, the triton needs the cutoff value for the PACK there, not per cell.

Just change the 1.1 to 8.8 and you will be good.

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10-20-2004 11:31 AM  13 years agoPost 5
T.C.

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Nottingham. England.

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raknin.

Glad you found that, I've just bought a Triton & also thought you set it to discharge as you did ie. 1.1V.

Just read the instruction again & RossR is right. Multiply the discharge voltage required by the number of cells.

1.1v x 8 = 8.8volts.


Tony

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10-20-2004 11:40 AM  13 years agoPost 6
T.C.

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Nottingham. England.

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Just tried to adjust my discharge voltage & it won't go above 1.2 volts.

Display reads

Discharge Voltage volts/cell

1.2 volts/cell

It will not go above that setting.

Does this mean the discharge cycle calculates the amount of cells by what has been programmed into it.

Tony

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10-20-2004 12:07 PM  13 years agoPost 7
raknin

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Israel

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T.C.
-------

Do the folowing:

1) Press the "Bat Type" button.
2) Choose a battery type.
3) Scroll down with dial until you will see the screen" discharge.
4) Press the dial to adjust the A to discharge and the battery "cut-off voltage"

Thats it.

Ross R
------------

I set those parameter accordingly but I worked in discharge-> Charge cycle mode and what I explined before occur when all parameter were set correcly. Maybe it was because I charge directly through the radio jack.

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10-20-2004 12:08 PM  13 years agoPost 8
Ross R

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Rochester NY

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TC: for a battery that is programmed in I believe that you can set the discharge rate per cell.

I believe that raknin was setting it at the discharge screen (what I usually do anyway) On the discharge screen you need to use the value of the entire pack.

raknin, if you set the discharge voltage to 8.8 on the discharge or cycle screens and it discharges below that something is wrong.

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10-20-2004 12:14 PM  13 years agoPost 9
T.C.

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Nottingham. England.

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Ross R,

Yes most of my batteries are programmed into the memory, so mine are set per cell & the Triton does the rest.

Worth knowing that there are 2 way's to set discharge voltage.

Tony

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10-20-2004 05:03 PM  13 years agoPost 10
raknin

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Israel

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T.C and Ross

I talked to greatplane technical support and they told me that in cycling
the discharge treshold voltage for each cell determine automatic by the triton itself and it set for 0.8V for each battery. He also said that the voltage of the battery can be drop below 0.8 per battery if you want store the battery for a long time.

So if you cycle 4 cell the cut-off voltage will be 4*0.8V=3.2V

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10-20-2004 05:33 PM  13 years agoPost 11
Glenn in Den

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Longmont, Colorado​area

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One thing to remember when discharging: The higher the load you put on it (current setting) the faster the voltage drops and stops the discharge. Remember, standing volts and volts under load will vary. For a near empty battery, that variance can be significant. So in other words, if you set a 1A discharge, the voltage will dip down to 8.8 and stop discharging. The battery will then "recover" to a higher voltage right away. The lower the discharge current, the less it will "recover" to it's "standing" voltage and the more it will be truly discharged.

Triton's auto discharge will really empty a battery pretty far, I found out . . . WAY below what even they say you are supposed to do! If I don't want to discharge too low, I'll set the current at .5 (500ma) and set the voltage manually too.

For a TX battery, unless you are trying to clear a stubborn memory, you shouldn't go below 1.1 volts per cell . . . but they never tell you at what "load" so you still have to guess a little!



Glenn.

I'm not really an R/C pilot, I stayed in a Holiday Inn Express last n

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