My First Set of Lipo's!

[Checkmateguy01]

I just got a brand new set of Turnigy 5000mah 2S 40c-50c Lipos, i am a complete newb to lipo as all i've ever run were NIMH's. Both packs looked good taking them out of the box, don't see any "puffing". So i put both batts on the charger (i have an Onyx 245 Lipo balancing charger) and both batt's were showing about 7.7V and the individual cells were about 3.84-3.85v. Is that good? I charged both packs at 5 amps for 10 minutes, just to make sure they take a charge and everything is working fine. Both packs went up to about 8.02v, and the cells were 4.01v, seems to be working ok?? Anyways, it's snowy and very cold, no R/C boating for a while, probably march/april, so these packs aren't gonna be used anytime soon, other than to power up the system in my Daytona once it's ready to go. Should i charge them full, or are they safe where they are at now for storage? I have a Lipo-safe bag for storing/charging them, just want to make sure i don't burn my house down!

[MORIDE]

Fully charged Lipo's should be 4,4 v or 8.4 for a 2S lipo, At 8.02 you are not fully charged. As far as storage, I believe the proper storage voltage is around 3.7 or 3.8 per cell. You will love the Lipo's they are the way to go!

[MORIDE]

Oops

That should be 4.2 volts per cell full charge,

[Checkmateguy01]

Cool, thanks for the input! Yeah, i knew they weren't fully charged, i didn't want to take them to peak since i won't be running them anytime soon, i just wanted to make sure the cells were good and there were no chargeing issues. Like said tho, they are at about 4.0v right now, if 3.8v is a good storage voltage i have no way of draining them right now. My charger does not discharge.

[Make-a-Wake]

The best storage voltage is 3.85 per cell...............4.0 shouldnt "hurt" them................if you feel the need to get them down, hook up a brushed motor and let it run for a bit................being careful of course to not let the motor leads accidentally touch

[Checkmateguy01]

That's good, but i don't have a brushed motor laying around to hook the batts up to. As long as leaving them for a few months at about 8V (4.0v each cell) won't hurt them i'm not gonna worry about it i guess.

[Make-a-Wake]

4.0v per cell is about 55-60% charged so it should be fine.