Re: [Amel Yacht Owners] Strange Battery charging…


Alexandre Uster von Baar
 

Good afternoon Bill,

7 weeks ago in San Juan, I checked the batteries (with the tester you recommended), all except for 2 were bad.
I check the acidity and (to me) it look like 2 were shots… the rest ok.

Unfortunately DC Battery (which you recommended and would recommend to anyone), couldn’t deliver on time (before I left San Juan).
Now that that I get the emigration extension I can order the batteries from them and receive them in 3 weeks.

Going to check tomorrow if one of more is warm.

In the event I am cooking the batteries, is the boat at risk? Fire, etc. ?
I could disconnect them and set the battery charger in power supply mode.

As always thanks so much for your help!..
Always learning…

Sincerely, Alexandre
SM2K #289 NIKIMAT
Harbor View Marina, Tortola, BVI



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

On Thu, 12/1/16, 'Bill & Judy Rouse' yahoogroups@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: Re: [Amel Yacht Owners] Strange Battery charging…
To: "amelyachtowners@..." <amelyachtowners@...>
Date: Thursday, December 1, 2016, 2:58 PM


 









Alex,
You need to get your batteries
checked before jumping to any other
conclusions.
Be sure
they are checked with a digital battery check instrument. My
guess is that you have one or more batteries with an
internal short.
Be
careful that you do not "cook" your battery
bank...sounds like you are getting close.
Open it up and touch the
batteries...if any of them feel warm or hot, that is
probably the problem battery...BUT...surely someone in
Tortola has a digital battery checker where they will
provide you a printout for each battery.
BillBeBe
387St. John
On Thu, Dec 1, 2016 at 8:31
PM, Alexandre Uster von Baar uster@...
[amelyachtowners] <amelyachtowners@...>
wrote:















 









Good afternoon,



During the 3 days power outage in Puerto Rico, I noted my
batteries were getting weak…

Would not fully recharge.

Accidentally, I reset the Link 10… but it kept the
setting, just now showing 100% instead of the 90%.



Due to the lack of wind, I mostly motor to Tortola, then
drift for 6 hours to wait for customs and emigration to
open, again I noted the batteries were weak (freezer
compressor stop).



I have now been at the marina for a month, and something
very strange is happening:



The first week, instead to get the usual charge of 0.2
amp/hour on the Link 10, I had 1 Amp hour.

The second week, was over 2 amp/hour charge

The 3rd week, I had 3 Amp/hour charge.

I thought my 40 Amp battery charger could have an issue, so
switch to the 60 Amp and still higher charge.

Now I am showing 8 Amp/hour charge ?!?

So the 100% has been reach for 3 weeks and is showing an
excess of 470 Amp (above my 100%) which is not possible as
my battery bank is only 400 Amp (8 batteries 100 amp each, 4
x 2 in series).



I wish it could be true…

Any idea?

This weekend, going to go back to the smaller charger to see
what it charges.



Thanks in advance



Sincerely, Alexandre

SM2K #289 NIKIMAT

Harbor View Marina, Tortola, BVI

































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