blurredvision

iTrader: (1)

I recently picked up my first electric RC vehicle and am learning about lipos for the first time. I've used the following link to learn a lot:

http://www.rchelicopterfun.com/rc-lipo-batteries.html

One of the biggest things I've read across the net is not to over-discharge lipo batteries, as that's pretty much a death keel for them.

The batteries I'm running with are all 2s 5000mah 40c. So I know that my batteries are 3.7 volts per cell, 7.4 volts total for a 2s lipo. A full charge is 4.2 on each cell, so 8.4 on my 2s lipos. The SCT I purchased is a RTR that comes with an ESC that has a cut-off at 6.0 volts for a 2s lipo.

My question is this: many places, including the the link above, state that you should quit running the battery when it drops down to 3.5-3.75 volts per cell. However, the cut-off is at 6.0 volts, or 3.0 volts per cell. Hell, the battery was shipped to me holding around 3.2 volts per cell.

So am I fine running the truck until it cuts off at 6.0 volts? Anything I should know in regards to this?

A bonus question: since the ESC has a 6.0 cut-off, will it just quit running when it gets that low? Will I ever realistically hit that 6.0 cut-off if I just quit driving when the truck is slowing down?

racer1812

iTrader: (31)

IIRC, the LVC should read the packs voltage under load. Which should give you a resting voltage of about 3.2-3.5v per cell. Long story short you should be just fine.


saying "should" is my little disclaimer

blurredvision

iTrader: (1)

So the voltage will read differently while under load and while unplugged from the car? For example, if I had telemetry, I'd see a different voltage load while on the track but as soon as I unhook the battery from the car and put a multimeter to it, the voltage will show lower?

racer1812

iTrader: (31)

Resting voltage will be higher, after you take the pack out of the car and let it sit for a couple minutes you would likely see voltage in the 6.2v-6.5v range.

I don't see you having any issues.