Sorry another lipo question

[speed demon]

The min volts for my lipo is 3v per cell. What does that mean? I mean when?....under a large draw or at rest? I was out playing around and noticed my truck slowing down alot so I stopped. I quickly checked it and it was 16.0v. I gave it 15 min and rechecked it and it was 16.4. I went to charge it and the cells were all about 3.25ish and the volts shot up to 17.9 only after a few seconds of charginging. Am I ok? Does all sound normal? Thanks.

[lincpimp]

#v per cell is the lowest you can discharge a lipo without risking the cells undergoing a chemical reaction and outgassing. As long as you set your lvc properly you should not have an issue. Lipos will regain some voltage as they cool down after a hard run.

[speed demon]

It's setup for 15.3v but it didn't hit it before my truck slowed down. Is that ok?

[BrianG]

It's fine. The LVC will trip when the battery reaches the set voltage. You saw 16v, but that was not under load and a short rest. Any battery voltage will drop when running.

The charging voltages you saw are normal. Lipos have a fairly flat discharge curve. Meaning, they stay at ~3.7v/cell for the majority of the cycle. At the end of the cycle, they drop off to 3v/cell quickly, but that also means they charge from 3v to 3.7v quickly as well.

[speed demon]

If the power drop off is that noticable before you damage anything then why run a LVC? I'm going to be running a 6S and I'm going to have to find something that will work or run without. I'm starting to wonder if my LVC is working right.

[brushlessboy16]

Because the Lvc is a positve stop, its safer, and not all lipos just dump..

unless you wanna pay for another battery, run the LVC

[lincpimp]

If you are running the truck hard you will notice the loss of power. If you are not running hard it can creep up on you. I can usually tell before I hit the lvc, but I still set it anyway. Plus I set it for 3.2v per cell for a little "cushion" in case one cell discharges faster than the others.

[speed demon]

I still run mine on 5S but won't be able too on 6S. I'll set the lvc at 16v and see what that does tonight. If it hits before I notice power loss then I'll get a lvc of some sort if I notice power dropping before then I won't mess with it. All in all for the most part I don't even run my truck for that long. I got around 37min last night of very hard running on open asphalt with a 4000mah bat.