A little scare with lithium

[Andrew_Trayfoot]

EDIT

I can't seem to edit the original post and have an important correction to make.

Turns out the battery is *not* a genuine Ryobi. I had bought it secondhand along with the tool, and assumed it was genuine. There was a bit of tape on the casing, I've removed that and it says 'Vanon' underneath. A quick Google shows that these are pretty poor aftermarket batteries.

Funnily enough the circuit board inside had Ryobi written on it.

Is there a way that a moderator can edit my opening post? I don't wish to bring the good name of Ryobi in to disrepute!

You probably need to 'report' the post for the moderator to pick up on it.
They can't read every post!

 

[Kelpie]

You probably need to 'report' the post for the moderator to pick up on it.
They can't read every post!

I already did that (felt a bit weird reporting myself!) but haven't heard anything.

 

[penfold]

People will be complacent. Fires will become increasingly common .

Jonathan

edit

Can you actually have a fireproof box on a boat? I envisage isolating all the batteries in a box, maybe some on recharge - if one goes they all go......or do you have multiple boxes (seems unrealistic in practice). We all use recharge torches, phones, power banks, strobe lights (for LJs), angle grinder (in case mast comes down) etc etc

A bit hysterical; phones have contained lipo batteries since the 1990s, the damned things are ubiquitous yet outside of a couple of notable and well publicised recalls/publicity campaigns the things are boringly non-incendiary. Most of the fires which do occur are down to people not following the instructions, which tell us not to leave them unattended and not to cover them up. As Birdseye observes the proximate risk is from overheating and fire from electrical shorts, which are agnostic about the power source and given the state of the wiring of many MABs I'm surprised smoke escape incidents don't happen more often.

 

[William_H]

I originally said "not li po" as part of saying the original poster's battery is definitely li ion and not li po.

A fun, scary li po failure mode:

... thank goodness it's a lot harder to do that to can cells.

I suppose all those youtubers with drone shots must have li po batteries on their boats, but I think I'll keep mine in an ammo tin in the shed at home.

Very scary but note he "damaged" the cell by piercing it with a sharp steel spike which inevitably shorted out the battery internally. I would hope normal accidental damage would not be like that. o'lwill

 

[davidej]

There is a new thread in the Lounge about a hand microphone bursting into flames. I expect it was lipos that caused it.

 

[Chiara’s slave]

There is a new thread in the Lounge about a hand microphone bursting into flames. I expect it was lipos that caused it.

Or maybe just hot lips.

 

[Refueler]

Very scary but note he "damaged" the cell by piercing it with a sharp steel spike which inevitably shorted out the battery internally. I would hope normal accidental damage would not be like that. o'lwill

Exactly ......

Having used LiPo's for many years - I have only seen one LiPo catch fire ..... basically my pal had a part on his model puncture the outer cell and it was in flight. The power draw was sufficient that as cell warmed up - it then did thermal runaway ....

Here's model when we ejected the LiPo

Here's the LiPo (3S 1800 ) after we'd ejected it out into the snow ...... and later went back to check on it ...

The matter was that the damage was not by a metal or conductive item. But the heat build up as the battery was supplying the motors demand while having a punctured 'pouch' allowed it to flame.

The videos on YT showing LiPo fires are usually forced affairs .... by overcharging seriously causing cell rupture from the heat .... puncturing by nails etc .... very few in fact as a result of actual use.

Post 45 mentions a handheld catching fire ........ I seriously doubt that a LiPo battery was in it ... a LiIon maybe ... but not a LiPo as there is no logical reason to use a LiPo ... its actually a very poor choice.