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Are you wary of Li-Po batteries?
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 Posted: Sat Jul 11th, 2015 06:45 am
   
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Tony Walsham
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You should be!!!!!!!
https://au.prime7.yahoo.com/n1/video/-/watch/28683777/fire-gutts-hobby-shop/
Sadly you have to watch the ad.



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 Posted: Sat Jul 11th, 2015 07:34 am
   
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Tramcar Trev
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Personally LiPos dont stress me out at all. Certainly there are incidents, lost Malaysian Airlines plane it is now claimed had a pallet load on board... But they are so prolific, in every mobile phone and most cordless tools these days, millions in use everyday most carry on without incident. The ones that seem to cause problems are the high output ones used and abused by aero modelers and model car enthusiasts...
On my recent overseas trip I traveled with 3 of them as rechargesble powerbanks to charge laptop and camera batteries and apart from being required to carry them in carry on baggage the airlines didnt seem to worry, just about everypassenger would have had a mobile phone and/or a tablet...



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 Posted: Sun Jul 12th, 2015 07:03 pm
   
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Bob D
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He didn't say if he was "fast-charging" the battery or if it was trickle-charging.

Like Trev said, these LiPos are everywhere these days, from hobby equipment to everyday household items.

My daughter is in Sicily, she has a camera with a Lipo battery, couldn't get one anywhere on the island. She bought one from Amazon and had it sent to me so I could send it to her.

I went to the Post Office with it in my hand and the person I talked to said as long as it was going to a
local" address (in this case a FPO) it was alright. So I took it home and packaged it up to mail the next day.

I go back to the PO and got an different worker who told me they wouldn't mail it, then turned right around and took my money and put postage on the package, go figure. My daughter got it in about 3 weeks.

We ride around in cars filled with gasoline every day, dodging people who shouldn't be allowed to drive, yet nobody says a thing about the dangers involved with all those gallons of gas on the roads.

I'm cautious with them but not worried.

BobD.



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 Posted: Sun Jul 12th, 2015 08:43 pm
   
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Budd
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I am not afraid of LiPo's but do take the precaution of charging them outside of my engines, not because I am expecting them to explode but just in case, and the fact that my engines are all set up to quick change spare batteries so it is just as easy to charge up at the bench anyway.

I personaly only know of one "explosion" and believe me, that was just stupidity or what we down in Oz would call "brain fade", and I am a disbeliever of hearsay, rumours and my uncles cousins best friend stories and especially 7 news stories, they always twist the truth for a good story.

I'll put all my old NiCd NiMh into a box and post them to you Tony, you can have them  :)

 

Wayne from Oz.



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 Posted: Sun Jul 12th, 2015 10:56 pm
   
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Tramcar Trev
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Budd wrote:
I am not afraid of LiPo's but do take the precaution of charging them outside of my engines, not because I am expecting them to explode but just in case, and the fact that my engines are all set up to quick change spare batteries so it is just as easy to charge up at the bench anyway.

I personaly only know of one "explosion" and believe me, that was just stupidity or what we down in Oz would call "brain fade", and I am a disbeliever of hearsay, rumours and my uncles cousins best friend stories and especially 7 news stories, they always twist the truth for a good story.

I'll put all my old NiCd NiMh into a box and post them to you Tony, you can have them  :)

 

Wayne from Oz.

I keep hearing about "someone" who spreads the most nonsensical hubris about everything, I ask my Dad who told him something and he will say "Someone", my son will say "dad biodesel is really made from cane toad droppings" and Someone" will have told him... One day Im gunna run into this "someone" and strangle them....

If you watch TV especially American TV, motor vehicles seem to spontaneously combust far more frequently that LiPo batteries.... Then Humans spontaneously combust more than Lipos....



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 Posted: Mon Jul 13th, 2015 12:10 am
   
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Tony Walsham
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I was a latecomer to accepting Lithium chemistry.
I am now selling Li-Ion packs made by Master Instruments here in Australia that all have protection pcb's fitted. That makes them much more expensive but so far, zero problems.
I have yet to hear of Li-Po hobby batteries being fitted with such protection. If they were I would give them every consideration.



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 Posted: Mon Jul 13th, 2015 03:33 am
   
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Tramcar Trev
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Protection PCB's are available via eBay viz; http://www.ebay.com.au/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR0.TRC0.H0.Xprotection+PCB.TRS0&_nkw=protection+PCB&_sacat=0
at sensible prices.
I make up my own packs by purchasing single cells and using a PPCB of appropriate current and voltage.
for model railway use there are available numerous protected cells and packs available.; http://www.ebay.com.au/sch/i.html?_from=R40&_sacat=0&_nkw=18650+battery+protected&_sop=15

And the inevitable "blue" batteries for us running larger scales; http://www.ebay.com.au/itm/DC-12V-3000mAh-to-15000mAh-Rechargeable-Protable-Li-ion-Battery-EU-US-AU-Plug-/391172872754?pt=LH_DefaultDomain_15&var=&hash=item5b13b85a32 these are protected cells and will shut down if you try and draw more than 10% of the capacity. I only just discovered this, the shut down amperage that is....

Lion and lipo are the same chemistry but lipo are to a degree flexible and usually in a foil case, with a bit of plastic around that...



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There once was a man who said Damn!!
I perceive with regret that I am
A creature that moves
in predestinate groves
I'm not a Bus, I'm a tram
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 Posted: Mon Jul 13th, 2015 03:40 am
   
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Tony Walsham
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None of those are Li-Po battery packs.



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Owner of Remote Control Systems
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 Posted: Mon Jul 13th, 2015 05:24 am
   
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Bob D
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Tony,

All-Battery sells some, but bring your wallet with you when you order:

LiPos with PCB

There's a couple shown on that link, most are out-of-stock.

BobD.



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 Posted: Mon Jul 13th, 2015 06:31 am
   
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Tramcar Trev
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As I said previously the chemistry is the same its the way they are packaged that is different...
lion's and lipo's are both capable of catching fire...
https://en.wikipedia.org/wiki/Lithium_polymer_battery



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There once was a man who said Damn!!
I perceive with regret that I am
A creature that moves
in predestinate groves
I'm not a Bus, I'm a tram
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