[NSRCA-discussion] Lipo Sacks

[chris moon]

Walter, 

I'm with Chad on this.  

The key is to have good equipment that will monitor the batteries and
automatically shut down if there is a problem.  Too many sensational
stories on the internet about some battery fire etc have a lot of
unknowns in their stories.  Have you ever seen one where they said "it
was my fault,  I did XYZ that I should not have done"?  No, everyone
says, wow it just blew up - then the marketing guys come out with a
safety product to fix a problem that probably never would exist with
good equipment and charging techniques.  Why don't we have bunkers and
sacks for cans of gasoline?  Is there not a chance that it could
explode too?  We know that if we goof around carelessly with gasoline,
it will go boom - so we are careful.  Same with lipos.

I could be wrong here, but I too have hundreds of charges on big lipos
and have never had any issue. The key is just be careful and check your
charge settings and use good equipment with safety cut offs.  Can it
hurt to use these bunkers and sacks, of course not.  They give you
another layer of protection but I really don't think they are that
necessary.

Sorry, but I really think the hype is over done with lipos.



Chris



PS - no more coffee for me today - I better go fly and relax some





Chad Northeast wrote:
Walter

  

The only safe way to charge lipos is to ensure you have a safe charger
that monitors cell voltages like the TP 1010, or the Schulze's.  Or use
a balancer like the Flightpower etc that tie into the charge line. 
This way if anything goes screwy with the charge they shut it down,
lipos don't light on fire for no reason, its usually because you
overcharged them and they got hot and burst.  Or you are charging a
damaged pack, and usually common sense will tell you that is not a good
idea.

  

ALWAYS babysit the charge, forget bunkers, sacks etc. if you monitor
the charge there is no need for these because you will always be aware
of the state of the packs as they are charging.  In my opinion using
sacks etc. is a band aid for unsafe charging practices.  I am sure
someone will flame me for this but I have been charging these big packs
for 4 years, I must have 1000's of charges behind me and "touch wood" I
have never had a single issue, but I watch my chargers.  In the early
days before we had all this fancy monitoring stuff I had to pull packs
off chargers because things were going bad.

  

Chad

  

----- Original Message -----

From: Walter Nasse <wwnasse at figment.ca>

Date: Wednesday, April 9, 2008 9:09 pm

Subject: [NSRCA-discussion] Lipo Sacks

To: NSRCA Mailing List <nsrca-discussion at lists.nsrca.org>

  

> BlankDoes anyone use the Lipo Sack for charging and transporting 

> batterypacks?

> 

> What other alternatives are there?  Ammo Boxes? Flour Tins?

> 

> Thanks,

> 

> Walter

> 

> No virus found in this outgoing message.

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> Date: 4/9/2008

> 7:10 AM

>
  

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