I had mine burst in flames. But it was bound to burst into flames after the way I treated it..
3S1P lipo, hooked up to 4 of fully charged 55Ah SLA.. thats 48 V vs the 12.3V of the pack... I guess just before the flame burst, if every cell was considered same, they were getting 16V each..
I shot the video, but I cant upload.. since the experiment was done "inside" my school, without the authority knowing.. Even though my supervisor was with me during the experiment, after the explosive outcome, we decided it would be best not to upload it.. Since already one my video (me going 50km/h+ through the hallways, and then another video of going 80+kmph, caused a big stirr in my department
) ... the video of me going 50 is still there, not the 80, that had to be removed..
The pack I used was 4S1P 5Ah 20C lipo from Hobbyking that was purchase on December, but was accidentally dropped(resulting in damage of one cell).. when trying to desolder the single cell , I made a mess of the pack.
The very next day I saw a video of Travis or someone cutting through a headway cell on youtube. Then I thought.. "hmm! maybe its not the overcharging that kills it, maybe its the AMOUNT and SEVERITY of overcharging that kills it". Lets say, the cells had (lets assume due to heat and fluffing) internal resistance of 50mohm.. 3 cells result in 150mOhm.. that would result in 240Amp charging current.. But then again, in real life, one cell had more resistance than the others. I^2*R meant more power went towards cell heating..
So charging each cell to three times their rated voltage ensured proper destruction.
I'm going to do another video, but this time with 6 SLA..
and 2S
!.. And this time HD video, OUTSIDE THE SCHOOL obviously