MMM auto lipo cutoff or 6.0 volts?

[mkrusedc]

What do you all use? Does it make a difference?

I have two TrackPower 2s1p packs.

Thanks

[JerryF504]

I read about a lot of people using the auto-lipo but it says in the manual that it only auto detects between 2s and 3s. I'm not sure if it will work for 4s or more so I always set mine for 3.2v per cell just to be safe.

[lincpimp]

Yep, I always use the manual setting and go for at least 3.1v per cell. I have not noticed much difference with 3.2v per cell for runtime, so that is what I use.

[jhautz]

Originally Posted by JerryF504

I read about a lot of people using the auto-lipo but it says in the manual that it only auto detects between 2s and 3s. I'm not sure if it will work for 4s or more so I always set mine for 3.2v per cell just to be safe.

If you set to auto detect it sets itself for 3.0v/cell. However it does work on up to 6s when you are using the Monster. If you set it to auto detect and then when you turn the controller on it will beep the same number of times as the cells it detected so you can verify it detected the correct number of cells. For instance if you plug a 5 cell pack it will beep 5 times. For a 3 cell pack it would beep 3 times, etc...

That said. I use a 3.2V/cell manual setting. No need to get every last drop out of the lipo and reduce the life of the pack.

Originally Posted by SpEEdyBL

If castle is listening think there needs to be a programming option where you can set your own auto detect voltage. e.g 12.8 volts if a 4s pack is detected and 16 volts if a 5s pack is detected, otherwise it would be PITA to have to reset the cuttoff every time you alternate between packs.

+1!!! That would be very ccool if you could just set the volt/cell on the cut off and let the autodetect do its thing.

[JerryF504]

Originally Posted by jhautz

If you set to auto detect it sets itself for 3.0v/cell. However it does work on up to 6s when you are using the Monster. If you set it to auto detect and then when you turn the controller on it will beep the same number of times as the cells it detected so you can verify it detected the correct number of cells. For instance if you plug a 5 cell pack it will beep 5 times. For a 3 cell pack it would beep 3 times, etc...

That said. I use a 3.2V/cell manual setting. No need to get every last drop out of the lipo and reduce the life of the pack.

OK, That makes sense. Thanks for the info!

[Sower]

Too bad the manual setting only goes up to 17.1v - no good for a 6s pack. You have to select auto if you run 6s. I would love to see that change.

[JerryF504]

Originally Posted by Sower

Too bad the manual setting only goes up to 17.1v - no good for a 6s pack. You have to select auto if you run 6s. I would love to see that change.

That problem is fixed on the new versions of the Castle Link. Just update to the new version (3.051).

I use 3.3 vpc

[skellyo]

If you're using the Trakpowers in series, you'll want 12.0V for the LVC as a minimum. I use 12.6V on mine with 2 Trakpowers.

[mkrusedc]

I have them in series, thank all!!

[SpEEdyBL]

If castle is listening think there needs to be a programming option where you can set your own auto detect voltage. e.g 12.8 volts if a 4s pack is detected and 16 volts if a 5s pack is detected, otherwise it would be PITA to have to reset the cuttoff every time you alternate between packs.

[VintageMA]

Originally Posted by SpEEdyBL

If castle is listening think there needs to be a programming option where you can set your own auto detect voltage. e.g 12.8 volts if a 4s pack is detected and 16 volts if a 5s pack is detected, otherwise it would be PITA to have to reset the cuttoff every time you alternate between packs.

+2 on that. If this is all done through code a firmware update could be all that's needed to make that adjustable setting. That's been a real issue for me because I do like to run different packs while I am out and have to stick with the auto-cutoff as my only choice.

[Sower]

I don't get it . . . changing the voltage drastically changes all the characteristics of the system. I think most people set up a system with an end use in mind and stick with it. Why are you changing the voltage for your systems?

[VintageMA]

Originally Posted by Sower

I don't get it . . . changing the voltage drastically changes all the characteristics of the system. I think most people set up a system with an end use in mind and stick with it. Why are you changing the voltage for your systems?

Generally I agree, but I can think of two scenarios:

1) HV - the more cells you use, the less of a difference a change makes. If you are using 2 cells, then yes going to 3 is 50% more speed. But if you are using 5 then going to 6 is only a 20% change. I have a setup that is going to be a nice powerful ride on 6S geared for ~42-44, but will want to drop down to 5S for some calmer driving around.

2) Doesn't apply to me, but if you have an ESC you want to switch between rc's with different setup it would make things a little easier than having to reprogram every time.

[Sower]

I see. I guess I've always been trying to nail my setup for a very specific use and only that use so I've never looked at it that way. Interesting.

When I started building my current system I knew I wanted 6s HV, low amps and it's working awesome. This weekend I was getting 25 minutes of runtime at the track going full out in my XT8. Motor temp never broke 100.