Lipo batteries

Tater

Member
Just a reminder about Lipo batteries. I just walked into my house from being out to eat and noticed a bad smell. I found this laying on my carpeted floor beside my Christmas tree. Battery was on my table before I left and was not on charge. However it was at full charge. Just got lucky this time. Remember to be cautious with these things, don't think it can't happen.
 

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Brand new or have you used it for awhile, did you notice any swelling before? Shades of Samsung here, really scarey, I keep my lipos in fireproof bag secured in ammo case.
 
I have had it for about a week. It has been used 5 or 6 times. never noticed any swelling. Im not sure what went wrong with this one, but I just gathered up every lipo i have and locked them in an ammo can. Im buying a bag asap. Just glad to still have a roof over my head.
 
Hi mate an ammo can to store in at store charge or full charge will be great if you can put it out side if still indoors then yes a lipo sack as well is best , Some times the lipo has a high internal resistance and over the charge cycles it damages the battery and can catch on fire they dont not have to be on charge at the time of the fire
I have 8 x 6 cell 4000 mah 8 x 6 cell 3000 mah 12 x 3 cell 2200 mah and about 7 x 2 cell 900 mah , I have never had a problem with a battery but I do keep a check on them all the time it only takes one to burn the house down you was very lucky
Depending on how many batteries you have I would get a few old ammos tin so they are not all in the one can
 
Lipo or Lipo ion batteries in fact are quite dangerous. the are build using a mix of chemicals that together form a mix very unstable. the main reason that they swell up is not exactly because the number of cycles all do is possible. also quick current charges may cause it. but usually is because they are charged while they are still warm after a flight. This not may have to be right the way it may take a few charges in the same fashion, to avoid this is to wait a few hours or even best let them to cool down overnight before recharge.

The reason they catch fire immediately or out of the blue is because the unstable mix of chemicals should never be in contact with oxygen in any forms. this combination is lethal, from caching fire to a severe explosion. it only needs a small opening of the protective wrapping to let the oxygen to get in, even a puncture the size off a needle prick would be enough. that is why the frame time of this happening. i strongly suggest that after a big crash do not go running to check the damage immediately which is very understandable but wait minutes at least, before you check your quad. you can have an accident. the bigger the battery the worst. trust me i have seen it happen, and is very impressive when they explode.

what you mention before about the precautions to have storing them or charging them are perfect, i think you can also do all that using those Pyrex containers use for cooking and they can handle very high temperatures, such as fire and even more, they are very strong glass an you can see the inside very clearly.

i know is an understatement but never leave your batterys any kind, unattended when you charge them
 
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