Lipo Problem
07-17-2008 | 01:31 PM
#16
Registered User
Joined: May 2007
Posts: 419
From: Townsville
it was ho but not too hot to touch. Ive had Nimh batteries much much hotter. I never got to run on the battery lol. I was testing in my culdesac and was only a couple minutes into it and it happened. Luckily I was running without the body on it back and for and say the battery strap blow off...with the body on I might not have seen it and continued running to gawd knows what damage.
Boy I hope I dont have to trash this battery. If so I think ill sell my other 1 and stick to Nimh. These are my first lipo because they scare me a bit.
Boy I hope I dont have to trash this battery. If so I think ill sell my other 1 and stick to Nimh. These are my first lipo because they scare me a bit.
07-17-2008 | 04:08 PM
#17
Your 7700 geared 19/86 in is simply pulling too many AMPs from the battery. This combination will tax even NiMH.
There is not a "low cost" lipo on the market that will not puff with this setup.
If you want to run a 7700 i would suggest dropping down the pinion about 5 teeth to begin with.
There is not a "low cost" lipo on the market that will not puff with this setup.
If you want to run a 7700 i would suggest dropping down the pinion about 5 teeth to begin with.
07-17-2008 | 04:42 PM
#18
08-03-2008 | 08:53 AM
#19
Tech Fanatic
iTrader: (104)
Joined: May 2006
Posts: 905
From: cincinnati ohio
Max
I have experience with this issue. You have pulled more amps than that battery can deliver.In my opinion those lipos are overated on the c rating. The 7700 will pull around 70 amps when geared hard. I did back to back tests with a 3600 poly rc 12 c and it preformed about the same as the one you have. They will usually shut down before they puff up though.If it's swelled it's done and i would not use it and dispose of it right away. A low turn brushless needs a higher capacity battery with a c rating that lets you pull 100 amps or more to be safe.
08-03-2008 | 01:47 PM
#20
I think you just had a rare bad pack.... it's done... no chance of it getting better..
I have used my Orion 3200 in my XXX-4 on a 9x2 mod and a 3.5 Novak Brushless.. many many times.. after practicing or racing the pack is not hot.. it's barely over the ambient temp outside...
As for NiMh.. i still like them and use them.. ya they have a bit more maintenance required.. not too big of a deal. i have all the gear.. I can usually get 8 months to a year out of a pack before they get moved to "practice only" or retired. I haven't had my LiPos for a year yet.. so I am very curious to see the lifespan. They cost 2-3 times more than a NiMh.... so.. the jury is still out!
Good luck and let us know what Orion says!
Jerome
I have used my Orion 3200 in my XXX-4 on a 9x2 mod and a 3.5 Novak Brushless.. many many times.. after practicing or racing the pack is not hot.. it's barely over the ambient temp outside...
As for NiMh.. i still like them and use them.. ya they have a bit more maintenance required.. not too big of a deal. i have all the gear.. I can usually get 8 months to a year out of a pack before they get moved to "practice only" or retired. I haven't had my LiPos for a year yet.. so I am very curious to see the lifespan. They cost 2-3 times more than a NiMh.... so.. the jury is still out!
Good luck and let us know what Orion says!
Jerome
08-04-2008 | 11:16 AM
#22
I got it back from orion today and they said they re-balanced it, charged and tested it and all is good. Ill try it out and see what happens. I trust their word, cause they could have just sent it back saying it was toast and I was SOL cause I had done somethign wrong or something. Im very impressed with their customer service cause turn around was really good considering the distance it had to travel.
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