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Forum Index : Electronics : Inverter building using Wiseguys Power board and the Nano drive board
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wiseguy Guru  Joined: 21/06/2018 Location: AustraliaPosts: 1293 |
I am far from an expert on large lithium storage but have visions of what a large battery ~120kG would behave like if it ever went feral. I would not like to be within 10-20 metres of the action and the concept of pushing/pulling/steering/guiding a 2 metre unpredictable flame thrower whilst spewing dense toxic fumes is the stuff of nightmares. Maybe put the batteries on a ramp headed towards a battery backed remote control door and with a battery backed solenoid pin retract to then send it off somewhere else sounds like a more appropriate plan to me. I am not sure a neighbour would be excited to receive it either  If that is over the top or exaggerated, please tell me what to really expect, I am happy to be educated further. Edited 2026-06-15 10:48 by wiseguy If at first you dont succeed, I suggest you avoid sky diving.... Cheers Mike |
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phil99 Guru Joined: 11/02/2018 Location: AustraliaPosts: 3284 |
That can be an issue with lithium ion cells as they use a hydrocarbon electrolyte with similar flammability as petrol. An internal short will release enough energy to boil the electrolyte and burst the cell. Boiling petrol + air + sparks = not good. LiFePO4 cells are much safer. As with almost all battery types overcharging may cause them to vent hydrogen, which can build up in a poorly vented space. As it is lighter than air it clears quickly if there is ventilation at ceiling height. The other risk is an internal short causing an extremely rapid release of the stored energy. No more common than with large lead-acid cells. |
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Revlac Guru Joined: 31/12/2016 Location: AustraliaPosts: 1269 |
There are many more things in everyday life that are far more dangerous and more likely to happen and often do. There is probably a better place to post this stuff.  Edited 2026-06-15 12:02 by Revlac Cheers Aaron Off The Grid |
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KeepIS Guru Joined: 13/10/2014 Location: AustraliaPosts: 2171 |
Big difference between older lithium chemical stews, still being sold, and LiFePO4. The toxic flame thrower you see in older EV, Home solar and E-bikes etc, are older lithium battery chemistry. Unfortunately Main Stream Media and social media affiliates, never ones to let a chance to scare and alarm viewers who still watch them, will not differentiate or identify the type of lithium battery chemistry involved, fortunately the numbers of viewers are getting less and less as people finally wake up to there cowardly & ignorant games. If you manage to get a LiFePO4 to vent, it will only vent, to start a fire, it still needs a specific set of circumstances to ignite any "concentrated buildup" of vented vapour. The cells do not spontaneously runaway or burst into flames. As far as neighbours being concerned, they should be concerned about all the older chemistry Home Solar batteries installed next door or their own install, over the past five years, or even older. NANO:Inverter V 8.2ks - Linux AvrDude GUI script V4.1 |
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