Re: [Amel Yacht Owners] Battery Compartment Explosion


Alexandre Uster von Baar
 

We often don’t realize what we deal with…
I didn’t know about the battery, but I remember when I had the Bauer Junior 2 Scuba compressor fully serviced last year, the repair guy told me this is equal to 1/4 of dynamite stick… So lack of maintenance can create some serious damages…

Alexandre
SM2K #289 NIKIMAT
Club Nautico de San Juan, Puerto Rico




--------------------------------------------

On Sun, 6/26/16, Bill Kinney greatketch@yahoo.com [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:

Subject: Re: [Amel Yacht Owners] Battery Compartment Explosion
To: amelyachtowners@yahoogroups.com
Date: Sunday, June 26, 2016, 1:56 PM


 









It is easy to forget that batteries contain a HUGE
amount of energy because we usually see it released a little
at a time under careful control.  Being a bit paranoid
about battery condition is a good thing, and Bill R’s
description of what to do is a excellent approach.
Just for some round numbers, I
put my engineering nerd hat on and sat down to calculate how
much energy really is stored in a Amel battery bank.  I
knew the number was going to be large, but the magnitude
surprised me...
420 Amp-hours X 24 Volts = 10,080
Watt-hours
10,080 Watt-hours = 32,000,000
Joules
1 gram of TNT releases about 4000
joules when it explodes.
So one Amel battery bank contains
as much energy as (very roughly) 8 kg of TNT!
Of course even a worst case
battery scenario can't release all that energy anywhere
near fast as detonating TNT, but still….
Respect the battery!
Bill KinneySM #160 HarmonieHighlands, New Jersey


On Jun 26, 2016, at 12:39,
'Bill & Judy Rouse' yahoogroups@svbebe.com
[amelyachtowners] <amelyachtowners@yahoogroups.com>
wrote:

James,
Yes...according to the specs from
the manufacturer. This test only returns a good or bad
reading...red or green light. If you want more precise
information there are digital testers that give you more
info.
BillBeBe 387
On Sun, Jun 26, 2016 at
3:46 PM, Lokiyawl2 lokiyawl2@aol.com [amelyachtowners] <amelyachtowners@yahoogroups.com> wrote:
 
Bill,  Your
proactive battery testing to catch a bad battery before it
fails sounds like a good idea to me.  With regards to the
aforementioned tester detecting internal shorts is the
instrument measuring the batteries internal resistance?
 
James

Sent from
Samsung Mobile


-------- Original message
--------
From:
"'Bill Judy Rouse' yahoogroups@svbebe.com [amelyachtowners]"
<amelyachtowners@yahoogroups.com> 
Date: 06-26-2016 9:52 AM
(GMT-04:00) 
To: amelyachtowners@yahoogroups.com 
Subject: Re: [Amel
Yacht Owners] Battery Compartment Explosion 


 
James,Buy a digital battery tester
like the one any battery supplier has and most automotive
shops have that test and printout the status, testing volts,
charge state, current CCA, and test for internal
shorts.Or if you don't need a
printout, buy the Solar brand Chinese knock-off. That is
what I have and I test all batteries about every 3
months. https://www.amazon.com/BA9-40-1200-Digital-Battery-System/dp/B00IZFNJ6YBill Rouse
BeBe Amel 53 #387
Sent from my tablet
+1832-380-4970 USA
Voice MailOn Jun
26, 2016 8:43 AM, "Lokiyawl2 lokiyawl2@aol.com [amelyachtowners]"
<amelyachtowners@yahoogroups.com>
wrote:
 
Bill,  How does
one test for internal shorts by doing a load test?  Good
information.James

Sent from
Samsung Mobile


-------- Original message
--------
From: "'Bill Judy
Rouse' yahoogroups@svbebe.com [amelyachtowners]"
<amelyachtowners@yahoogroups.com> 
Date: 06-26-2016
9:31 AM (GMT-04:00) 
To: amelyachtowners@yahoogroups.com 
Subject: Re: [Amel
Yacht Owners] Battery Compartment Explosion 


 
Batteries, anchors, and other boat stuff that we all
have firm options on...but for this posting I will stick to
batteries. In my experience one
person's experience with a single product, is only
misleading and proves nothing, especially batteries where
there are at least 10 variables in addition to make and
model.For instance, I met a British
guy in Turkey at a marina who was changing out his
batteries. He had 14 years on them. He bought these
batteries when he bought his boat, which was a Beneteau
coming out of charter in Greece. He sailed to Marmaris
Turkey where he lived aboard for 14 years. At least once a
year, he would unplug and motor somewhere for the day.I think that regardless what brand battery you buy,
the most you can hope for is 4 years, if you actually are
cruising. BTW, the absolute worst brand that I bought was
Varta  freedom style calcium batteries. I bought 13 in
Greece. They started failing 3 months later with internal
shorts. They failed one at a time. Had I not supervised
them, I had about 8 opportunities for a major problem like
Phantom's battery problem. Those 13 batteries were each
discarded in 12 months. Johnson Controls UK, the company
that manufactures Varta chose to do nothing, telling me to
take up the issue with the Greek who also chose to do
nothing. At the time that I bought Varta I was told that
Varta bought the Delphi Battery plant in France where the
original Amel batteries were made. My single experience
shouldn't eliminate Varta from your choices, but it does
for me. In my experience the best performing batteries have
been the original Amel-installed Delphi Freedom batteries
and the same battery made by the Delphi licensee in
Istanbul, Turkey. Sadly, I do not believe those are
available in Turkey anymore, and Delphi France is just a
brand made by someone else since the GM liquidation of
Delphi. Be sure to load test and test for shorts any new
batteries when they are delivered. The battery supplier
should do this while you watch and should give you a
printout for each battery. Or buy the digital battery tester
and do it yourself, as I do. Out of 12 delivered, I had 2
batteries fail the internal short test. Bill Rouse
BeBe Amel 53 #387
Sent from my tablet
+1832-380-4970 USA
Voice Mail
















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