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Post by spindeepster on May 5, 2014 14:56:15 GMT 1
[img src="  " alt=" "]A healthy 1600ma battery charged to 12.5v did this in the middle of the night. I woke up at 4AM with a house full of smoke. |
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Post by spindeepster on May 5, 2014 15:00:53 GMT 1
Type less....fly more.
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Post by sham on May 5, 2014 15:24:55 GMT 1
Looks to me like all the metal stuff near the batteries are more than likely the cause of that.
Glad no real damage was done!
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Post by flydiver on May 5, 2014 15:26:57 GMT 1
It's possible. One has to inquire if the battery had possibly been crashed, dropped, over/under discharged in it's life. All of those can create internal damage that shows up at a later time, or never so lots of folks go on assuming that it's not a problem.
A short in that pile of stuff in the box is another possibility.
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Post by spindeepster on May 5, 2014 18:45:28 GMT 1
Looks to me like all the metal stuff near the batteries are more than likely the cause of that. Glad no real damage was done! Thanks! The only "metal stuff" is a screwdriver, that we can see the tip of. The blue thing is a tape measure (plastic), a bamboo kabob stick, and a piece of plastic tubing are the other items. There is another screw driver (yellow end) and a pair of sissors, but they're pointing away from the batteries. They're less than a year old, and have not been over used. One of them was involved in a MAJOR crash of a P40 Warhawk. Type less....fly more. |
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Post by flydiver on May 5, 2014 21:49:05 GMT 1
There you go.....maybe. Smushing the battery can create internal shorts. Fully charged, creating a potential bomb >>>...frizz-zit-zap! You'll likely not know for sure but now you can be paranoid forever.....  You've seen it most likely. Question: "I've abused my battery this/that/the other way, is it still safe to use?!? Desperately need to know, NOW!" Followed by a mess of (mostly) ill informed opinions which will contradict one another. |
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Post by spindeepster on May 5, 2014 22:54:58 GMT 1
I just bought one of these. ALL of my batteries will have a permanent home in it out on my garage floor.  |
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Post by hghost on May 6, 2014 5:11:30 GMT 1
It does not have to have a nick or scratch or scuff or any sign outwardly to have issues after a crash.
Anytime you have a hard crash and does damage to your plane, most likely the battery will have suffered an impact as well.
Think of it this way. If a Race car driver is buckled in and he is traveling 200 mph and gets spun out and hits the wall, the car takes the majority of the impact and the car gets torn up, BUT that driver by setting in the car, buckled in,helmet,all the safety equipment one can have around him and still he gets his guts jarred and shook all over . Some get concussions and broken bones and all they have is the car around them absorbing the impact.
A Lipo battery is like that driver.....the plane crashes takes the hit, absorbs most of the impact, however so does that Lipo battery, it gets it's guts shook and jarred around, it may have a concussion and or a broken bone...and never have that outward mark simply because outwardly the plane that is foam insulated it from getting any marks, but can not insulate it from taking a jarring impact that does internal damage.
A Concussion if you will or a bone broke inside the body.....and YOU never see it, but after it is recharged that chemical process that is already broke down can do nothing but erupt...and as you now see...the end results.
Any time you suffer a hard crash that does allot of damage to your plane...always set that battery aside and mark it with tape, give the date whatever on it....charge it separately from all others and store it in a lipo safe bag and in a separate metal container in an area that can be watched but also that is safe from fire damage
Even if you have to put that bag in sand for a few days....watch it, check the rate, see if it is losing charge, puffing, whatever...and only after it has gone through a cycle should you use it in your model and or store it with other batteries.
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Post by pasquale91 on Aug 7, 2014 23:22:51 GMT 1
While I don't have a fire-safe for my lipo's.
I do have a lipo bag. Which is stored inside a .50 cal
ammo can for piece of mind.
Most of the time the planes, radios, and batteries stay
inside my travel trailer up at the camp.
I'd hate to get that call saying it'd been burned down.
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