liveforphysics
100 TW
***EDIT***
I took the best 10 seconds or so from each video, and made a highlights vid. Enjoy!
[youtube]dree0rTr1HM[/youtube]
I've conducted some harsh tests on various battery types.
When a vehicle crashes and crushes a battery, or when a battery pack shorts, or when a charger malfunctions, or a cell dies causing the others to become over-charged, or various other problems that Murphy manages to throw at us, it's a good idea to know what a battery is capable of doing.
This is very good to see for the folks out there using Lithium Polymer LiCo based batteries. They can shoot a wall of high temperature flames a pretty impressive distance if treated improperly. The camera and my face got a taste of them 1st hand, and it's all on video.
The Headways 10Ah cells were extremely difficult to cause a flame venting event. I guess if you had some terrible luck, like a car-wreck with something burning near them to heat them enough, you might be able to trigger this event, but it's very unlikely. No amount of punctureing, crushing, smashing could get flames from a headways cell, but prolonged overcharge combined with a very long time with the heatgun was able to cause them to vent flame impressively.
All these videos were filmed in 1080p, and converted to 720p during editing, and should be available on youtube in 720p HD if you select HD, otherwise they will play in normal crap youtube resolution.
Here is the introduction to my cell test videos, showing the various cells and tools to be used in the tests.
[youtube]bt-G21hY9H8[/youtube]
LiFePO4
Original headways Hacksaw video. Boreing to watch, mostly educational about LiFePO4 cell design.
[youtube]8IBapfB0Imo[/youtube]
LiFePO4
New Headways cell puncture/crush test video.
[youtube]52h8IK0IdqI[/youtube]
LiFePO4
New Headways thermal test video.
[youtube]wkJM8MZkFKU[/youtube]
LiCo "LiPoly" "LiPo"
5Ah Turnigy over-charged.
[youtube]FXrmvuLkSsQ[/youtube]
LiCo "LiPoly" "LiPo"
2x3Ah LiPo cells from a MacBookPro laptop battery. This video is excellent.
[youtube]iGXPu-VLL-U[/youtube]
LiCo "LiPoly" "LiPo"
1.5Ah Nintendo DS LiPo cell. Puncture test. The cell only gets mildly warm.
[youtube]4B0M4l1upY4[/youtube]
I've got 5 more videos to upload still... I'm just tired of editing and uploading HD video, which is a fairly slow process.
Enjoy!
I took the best 10 seconds or so from each video, and made a highlights vid. Enjoy!
[youtube]dree0rTr1HM[/youtube]
I've conducted some harsh tests on various battery types.
When a vehicle crashes and crushes a battery, or when a battery pack shorts, or when a charger malfunctions, or a cell dies causing the others to become over-charged, or various other problems that Murphy manages to throw at us, it's a good idea to know what a battery is capable of doing.
This is very good to see for the folks out there using Lithium Polymer LiCo based batteries. They can shoot a wall of high temperature flames a pretty impressive distance if treated improperly. The camera and my face got a taste of them 1st hand, and it's all on video.
The Headways 10Ah cells were extremely difficult to cause a flame venting event. I guess if you had some terrible luck, like a car-wreck with something burning near them to heat them enough, you might be able to trigger this event, but it's very unlikely. No amount of punctureing, crushing, smashing could get flames from a headways cell, but prolonged overcharge combined with a very long time with the heatgun was able to cause them to vent flame impressively.
All these videos were filmed in 1080p, and converted to 720p during editing, and should be available on youtube in 720p HD if you select HD, otherwise they will play in normal crap youtube resolution.
Here is the introduction to my cell test videos, showing the various cells and tools to be used in the tests.
[youtube]bt-G21hY9H8[/youtube]
LiFePO4
Original headways Hacksaw video. Boreing to watch, mostly educational about LiFePO4 cell design.
[youtube]8IBapfB0Imo[/youtube]
LiFePO4
New Headways cell puncture/crush test video.
[youtube]52h8IK0IdqI[/youtube]
LiFePO4
New Headways thermal test video.
[youtube]wkJM8MZkFKU[/youtube]
LiCo "LiPoly" "LiPo"
5Ah Turnigy over-charged.
[youtube]FXrmvuLkSsQ[/youtube]
LiCo "LiPoly" "LiPo"
2x3Ah LiPo cells from a MacBookPro laptop battery. This video is excellent.
[youtube]iGXPu-VLL-U[/youtube]
LiCo "LiPoly" "LiPo"
1.5Ah Nintendo DS LiPo cell. Puncture test. The cell only gets mildly warm.
[youtube]4B0M4l1upY4[/youtube]
I've got 5 more videos to upload still... I'm just tired of editing and uploading HD video, which is a fairly slow process.
Enjoy!