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Fish_in_a_Barrel
Joined: 30 Sep 2006
Posts: 673
Location: Perth, Western Australia
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quote:
Originally posted by Knightrous:
Bucket of sand to bury the battery in as it burns and take it outside is fairly safe.
I thought I remembered reading a datasheet or msds which said to use salt water. The water being for the fire, and the salt in there to discharge the battery.
Pretty much follow battery warnings of don't charge in equipment (preferably a lipo bag or non-burnable enclosure), monitor the temperature, check for physical damage, etc.
I remember there was a video reposted on here from the ?rfl forums? where a normal lipo was charged to flames (intentionally), it took 35V for a 12V? pack, forcing a constant 2A into it I think. Puffed up to three times the size before going, something you would hope to notice beforehand. After which it burned, but was on a metal plate so there wasn't much danger of anything else catching fire.
I had to look into this a bit for the iNexus comp, with the resolve on the OHS danger/likelyhood chart, that there was a minor risk of burns to hands, maybe some minor smoke inhalation and a fairly low chance of it happening with most cattery chargers not charging under-voltage cells, over-voltage cutoffs, intimate knowledge of the robots that they were using so they would notice a puffy cell (something that might change for your crew) and having knowledgeable people around to respond in the rare case that it did occur (to secure a safe way to transport it [kero's can recount the case at robogames where it was passed through the builders fence to get it outside away from everything] outside or drown it in water)
_________________
They say that he crossed the fine line, from insanity to genius.
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Wed Jul 21, 2010 1:04 pm |
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