shogun zoom cutoff voltage

[tvhelidad]

3 cell 11.1 volt lipo. I have a cc 25 and the usb link. running a himax 4200
I can set the voltage wherever I want so do I still go for 11 vdc cutoff? Using low gov mode . firmware 1.22 Finelly got it built hasnt hovered or flown yet.

[sportygreg]

The standard cutoff for 3s lipo is 3volts/cell but you could go higher for extra battery protection-the higher the cutoff,the less flight time you will get.

[tvhelidad]

OK Thanks!!

[mike the snake]

If you run your Lipo down to 3 volts per cell you will ruin your battery in a hurry I think, as well as endangering you heli and the people around you!
3.6 volts is the safe cutoff voltage I THINK!
What I DO know is that the way to ruin lipos is to run them too far down, this is when they go out of balance, get really hot, and sometimes expand and explode.
I don't know the exact details, but what I do is NEVER fly tyhe heli past 80% of the battery capacity. I do this by timing my flights, and noting how much charge the battery takes in, so on my 2100 pack, if I charge it and it takes in 1700 or 1800 I know I flew for as long as I possibly could have, and I then know exactly how long i can safely fly.

[tvhelidad]

great thanks

[sportygreg]

Some ESC's only have 3 options for cutoff voltage with 3V/cell being the highest.If yours has programmable cutoff then by all means go a little higher.You should always stop flying when you notice a decrease in performance which would be above 3V/cell in most cases.

[mike the snake]

That's not good enough.
That will still result in serious danger. I have a buddy who flew his shogun for too lang and had a battery balloon up and burst on him in air.
If your ESC's cutoff voltage is 3volts then it's on you to know how long you can run. Like I said, start out incrementally, time your flights and note how much the charger puts back in, and this should never be more than 80% capacity Example, 2100 mah battery FULL charge would be 1690, THIS will keep your battery in good condition and safe.
When lipos go below 3.6 volts at high draw they get VERY hot, balloon up, and often explode. This is also when they go out of balance, and then balloon up and often explode during the next charge.
The headspeed should not drop, the only thing you might notice is the Super Duper 3D power during hard moves might be a little less, but headspeed during hover you won't notice a difference when it's time to stop, if you hover til you notice the head speed drop you';ve gone way too far. IMHO

[turco]

Caring for Battery
1) Charge battery with good quality Lithium Polymer charger. A poor quality charger can be dangerous.
2) Set voltage and current correctly (failure to do so can cause fire).
3) Please check cell voltage after the first charge.
Example 1-Cell: 4.2V (4.15 to 4.22)
2-Cell: 8.4V (8.32 to 8.44)
3-Cell: 12.6V (12.48 to 12.66)
4-Cell: 16.8V (16.64 to 16.88)
5-Cell: 18.5V (18.30 to 18.60)
4) Do not discharge battery to a level below 3V per cell under load. Deep discharge below 3V per cell can deteriorate
battery performance.
5) Use caution to avoid puncture of the cell. Puncture of cells may cause a fire.

this comes from thunder power Charging & Safety Pamphlet
http://www.thunderpower-batteries.co.../charging.html