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02-23-2012, 05:13 PM
| #1 |
| Rock Crawler Join Date: Feb 2011 Location: Courtenay
Posts: 716
|  I hope I didn't kill my lipo.
I know, I know. I shouldn't be running without a cut-off! But hey. I was! I've always timed my runs and thats worked fine. Today I got lazy. I was driving and all of a sudden the servos started acting slow and sluggish. and I thought the throttle was a bit too. I realized I was cutting it real close and shut her down immediately. It's a 2s pack, and when I plugged it into the charger, the charger read 6.2volts. Its a lightmax 2450mah 2s lipo, charging with a turnigy accucell 6. It seems to be charging just fine so-far, I've just NEVER seen a lipo lose power like that before. Does a drained lipo just not charge? or is this when they go FALLOUT style? |
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02-23-2012, 05:53 PM
| #2 |
| I wanna be Dave Join Date: Nov 2010 Location: 07456 N. NJ USofA
Posts: 8,314
| Re: I hope I didn't kill my lipo.
Having 6.2 volts means an average of 3.1 VPC.....you are likely OK if they are fairly even. Charge them up and see what happens. May want to be a bit more carefull of this pack until you see it behave.  |
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02-23-2012, 05:57 PM
| #3 |
| Pebble Pounder  Join Date: Mar 2011 Location: St. Paul
Posts: 98
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What kind of an esc do you have? Sent from my ADR6400L using Tapatalk |
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02-23-2012, 06:28 PM
| #4 |
| Rock Crawler Join Date: Feb 2011 Location: Courtenay
Posts: 716
| Re: I hope I didn't kill my lipo.
Ultra cheap lansu esc used by redcat. I knew 6.2v was okay, but I figured it dropped below that for a minute as I was climbing uphill, had 4w steer on, and three wheels in a bind at the time  . It was drawing some amps for sure. 1540 mahs so far, and no fireworks  |
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02-24-2012, 01:50 AM
| #5 |
| Shelf queen  Join Date: Aug 2008 Location: Internet
Posts: 5,857
| Re: I hope I didn't kill my lipo.
You can use an external lipo cut-off like the Novak Smart Stop
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02-24-2012, 02:57 AM
| #6 |
| I wanna be Dave Join Date: May 2006 Location: akron
Posts: 4,054
| Re: I hope I didn't kill my lipo.
Your fine.. When they are at the "cutoff" voltage the packs go flat like you described.. I ran without a cutoff for along time and never had any issue's to speak of with over discharge.. Honestly I usually stop driving now before the cutoffs kick because of all the years driving without one I can tell right away when a pack is close to cutoff... |
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02-24-2012, 07:30 AM
| #7 |
| I wanna be Dave Join Date: Sep 2005 Location: Houston, TX
Posts: 16,952
| Re: I hope I didn't kill my lipo.
It sounds like your ESC has a built in voltage cutoff.... |
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02-25-2012, 01:04 PM
| #8 |
| Pebble Pounder Join Date: May 2009 Location: Northern Virginia, USA
Posts: 128
| Re: I hope I didn't kill my lipo.
So long as it isn't a really deep over discharge and it only happens once or twice in the life of a pack, it will bounce back no problem. I accidently ran a lipo down in my F1 car to the point where it barely moved at all, and it came back no problem.
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02-25-2012, 01:37 PM
| #9 | |
| MODERATOR   Join Date: Oct 2010 Location: RC Land
Posts: 3,185
| Re: I hope I didn't kill my lipo. Quote:
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