Anyone heard of a lipo catching fire due to a speedo fault ?

[mobile chicane]

Links please if you have ta

[mark christopher]

the only way they would do that is if
1/ the speedo had a dead short
2/ the user used them below the 6 volt cut off thery could swell
3/ over charged

nimh would do damage if speedo was faulty, as its not a cell fault in either case

[caneye]

Why is there a risk of fire if the lipo dips below 6v?

[mobile chicane]

whatabout if the speedo cought fire and set the lipo off ?

[neiloliver]

Originally Posted by caneye

Why is there a risk of fire if the lipo dips below 6v?

Unlikely. Low voltages cause performance/life issues in Lithium Polymer rather than safety issues. It is overcharge or over current that cause safety issues. If an ESC went dead short then this could cause a fire.

N

[mark christopher]

Originally Posted by mobile chicane

whatabout if the speedo cought fire and set the lipo off ?

what are you actually wanting to know?

[mobile chicane]

Originally Posted by mark christopher

what are you actually wanting to know?

baisicly if a spedo cought fire and it was next to the battery in the car would the burning speedo ignite the battery ?

[mark christopher]

yes it can in extreeme circumstances

[FONT='Verdana','sans-serif']EXTERNAL THERMAL DAMAGE – LiPo cells will get damaged by external heat. Most manufacturers recommend keeping the cells under 60 deg C or 176 deg F. In my experience, a cell will start to balloon up and the layers start to delaminate once the temperature rises above 90 deg C (194 deg F). If the temperature is extremely severe – the cell will go into thermal runaway and you will have a flaming mess. The thermal volatility is directly related to the cell chemistry. [/FONT]

[sparrow.2]

Originally Posted by mobile chicane

baisicly if a spedo cought fire and it was next to the battery in the car would the burning speedo ignite the battery ?

Are you really worried about this?

Assuming a speedo caught fire badly enough to ignite a lipo, the burning speedo would have been enough to trash the car. It wouldn't do Nimh's any good either being roasted by a flaming speedo going supernova.

Both scenarios are bad but highly unlikely and not really reason enough to not buy a lipo... (in my opinion at least...)

[mobile chicane]

Originally Posted by sparrow.2

Are you really worried about this?

Assuming a speedo caught fire badly enough to ignite a lipo, the burning speedo would have been enough to trash the car. It wouldn't do Nimh's any good either being roasted by a flaming speedo going supernova.

Both scenarios are bad but highly unlikely and not really reason enough to not buy a lipo... (in my opinion at least...)

my thoughts as well but the posibility was out to me