LiPo battery caught fire during charging
- Thread starter armandd
- Start date
Alan B
100 GW
Any data on what went wrong? Clearly a scooter - make, model? Anything useful we can learn? Lithium batteries do burn, we should already know that.
Philaphlous
1 kW
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- Mar 28, 2017
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I'm guessing poor manufacturing qa caused it. Shoot I recently overcharged my 18650 pack to 4.3v per cell and never had an issue. Thank you panasonic cells! Won't ever do that again! Hello 4.1v per cell!
Alan B
100 GW
Lipo can easily handle some overcharge, many have gone to 4.5 or more. The problem is when one goes to zero, and the neighbors have to go to 8V!
How do we know the accident was lipo? Many scooter packs are 18650s?
What do we really know here??
How do we know the accident was lipo? Many scooter packs are 18650s?
What do we really know here??
Voltron
1 MW
Yikes... That should be required viewing for anybody considering unsupervised charging in a confined dwelling.
And strictly an off the cuff observation, most 18650 fires seem to have the string of firecrackers sound... But with the one big pop and smoke volume, I'm guessing some kind of pouch cell.
And strictly an off the cuff observation, most 18650 fires seem to have the string of firecrackers sound... But with the one big pop and smoke volume, I'm guessing some kind of pouch cell.
LockH
1 PW
Hehe...
Seen here:
https://endless-sphere.com/forums/viewtopic.php?f=1&t=95374&p=1397838#p1397838
:wink:
Seen here:
https://endless-sphere.com/forums/viewtopic.php?f=1&t=95374&p=1397838#p1397838
:wink:
Philaphlous
1 kW
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I'd keep in mind guys that lithium metals was an attempted rocket fuel additive if you read through the book ignition!. It's actually quite surprising what results they had. Seemed to have decent success so I'm wondering if spacex could actually do something with recycling their old Tesla battery packs with burning them up in their rocket engines. Ha. The ultimate recycler...falcon 9. Now that's green rocket fuel...
On another note. I typically charge my pack unattended. I've got mine hooked up to a smart plug so I can monitor the power draw of the charger and turn it on and off with my phone. I trust the mostly panasonic cells I'm using in my pack. I mean theyre the same cells as the old Tesla roadster....
On another note. I typically charge my pack unattended. I've got mine hooked up to a smart plug so I can monitor the power draw of the charger and turn it on and off with my phone. I trust the mostly panasonic cells I'm using in my pack. I mean theyre the same cells as the old Tesla roadster....
Voltron
1 MW
Not to be a jinxer, but that sounds dangerous. Everything could be in flames before the smart plug showed anything, so unless it's in a flame proof enclosure with an automatic sand dump and alarm, away from occupied dwellings, it needs to be attended.
It sounds like you have a pack made with mixed cells, but relying on most of them being Panasonic?
Trust shouldn't be your first line of fire defense...
It sounds like you have a pack made with mixed cells, but relying on most of them being Panasonic?
Trust shouldn't be your first line of fire defense...
Trust led Dogman Dan to burning down his garage.... And other members (and plenty outside ES) had fires because they trusted their "known good" batteries.
dogman dan
1 PW
No, but when you light up the vented hydrogen gas, it burns pretty good.
Alan B
100 GW
Reinforcement doesn't help charging fires.
Philaphlous
1 kW
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Yea... I think I'll move my charging outside. I only charge once a week anyway though...
jonescg
100 MW
Yeah anything that stops a cell from fretting, rubbing or otherwise suffering physical damage will help mitigate against 'avoidable' harm. But cheap BMS units which fail and allow a cell to be overcharged, or over-discharged are also a risk here. More than likely the BMS has allowed a single cell to become over charged.
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