On Sat, 12/3/16, 'Bill & Judy Rouse' yahoogroups@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: Re: [Amel Yacht Owners] Strange Battery charging…
To: amelyachtowners@...
Date: Saturday, December 3, 2016, 5:54 AM


 









Danny and Alex,
Danny has a later model of Dolphin charger than
Alex dies and Danny's Dolphin charger is a latter model
than what was originally installed on Danny's SM.
Alex, I am fairly certain that your charger has
no switch as Danny described.
Bill Rouse

BeBe Amel 53 #387

Sent from my tablet

+1832-380-4970 USA Voice Mail

On Dec 3, 2016 7:46 AM,
"Alexandre Uster von Baar uster@...
[amelyachtowners]" <amelyachtowners@...>
wrote:















 









Good morning Danny,

I just compare the Dolphin owner manual and my new MDP,
unfortunately I won’t have the Sulphation recovery Program
like you have…

Very interesting curve.



Also thanks for the Super Wind info.



Sincerely Alexandre



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

On Fri, 12/2/16, Danny and Yvonne SIMMS simms@...
[amelyachtowners] <amelyachtowners@yahoogroups.
com> wrote:



Subject: Re: [Amel Yacht Owners] Strange Battery
charging…

To: "amelyachtowners@yahoogroups.
com" <amelyachtowners@yahoogroups.
com>

Date: Friday, December 2, 2016, 6:33 PM





 



















Hi

Alexandre,My

Dolphin chargers have a desulphation phase. Position 9.
It

runs to have the batteries at 34 volts and then dropping

until finishing with a float phase at 27.6v. Takes two
hours

to complete. I turn off all instrumentation and
don't

enliven anything electrical during the process. My main

battery switches remain on. I do all the 12 batteries

together in situ. All cell caps off and the lid to the

battery locker closed.. Avoid doing anything that might

create an ignition source, there is a lot of toxic gas

produced. Without the closed battery compartment vented

outside it would be suicidal to do this in the

boat.As I

said in my post I desulphated yesterday. The boat is on
the

mooring and I had noticed battery volts were at or above
28

every time I went on board (solar panels and wind
generator)

This indicated to me that the batteries were sulphated.
(see

my comments in yesterdays post) Today, post desulphation

they were at 25. (rising as the solar kicked

in)CheersDannySM

299 Ocean Pearl 







From: "Alexandre

Uster von Baar uster@...
[amelyachtowners]"

<amelyachtowners@yahoogroups.
com>



To:

amelyachtowners@yahoogroups.
com

Sent: Saturday, 3

December 2016 9:54 AM

Subject: Re: [Amel

Yacht Owners] Strange Battery charging…







 



















Hello Danny,







Desulphalisation is the word I was looking for!



I put a “Pulse” system 3 years ago, it is 24 volt so

connected on 2 batteries at the time, not sure it was

useful…







How do you desulphalise?







Sincerely, Alexandre



SM2K #289 NIKIMAT



Harbor View Marina, Tortola, BVI







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



On Fri, 12/2/16, Danny and Yvonne SIMMS simms@...

[amelyachtowners] <amelyachtowners@yahoogroups.
com>

wrote:







Subject: Re: [Amel Yacht Owners] Strange Battery

charging…



To: "amelyachtowners@yahoogroups.
com"

<amelyachtowners@yahoogroups.
com>



Date: Friday, December 2, 2016, 2:46 PM











 







































Hi



Gary,The



detail you go to in caring for your batteries

intimidates



me. I bought our 12, 6 volt wet cell lead acid
batteries



from West marine in Newport Rhode Island in July 2009.
I

top



the water up from our water tank as needed  (the only

water



that goes into our tank comes from the water maker) and

if



they begin to not hold charge I desulphate. I believe
on

a



logical thought process (I think it is logical anyway)

that



individual batteries may sulphate at different rates so

the



performance for each battery would be affected

differently.



So I would think that detailed individual testing may

give



misleading results unless the bank had recently been



desulphated.



I had



got to the point of thinking I needed to replace them

and



then I found how to desulphate.Sulphates



build up on the plates and reduce the ability for the

charge



to get to the plates. The more sulphates the less
charge



gets through. What happens is the batteries seem to

charge



more quickly but then discharge rapidly. The higher the

rate



of amp input the worse the effect as the charger senses

the



batteries are full and cuts out. A lower rate of charge



trickles through the sulphate coating and results in a



fuller genuine charge. Imagine pumping water through a

fine



filter with a pump with a pressure cut out. A high
flow



pump would build up pressure quickly and cut out. A

lower



flow pump would keep going. But, best solution, remove

the



filter ie desulphate.I



also confess to at times over discharging (too often)

but



here we are 8 years down the track and still going.
(now



I've said that they'll fail tomorrow) I believe

the



solar panels and the wind generator are critical

components



the battery longevity. All the time it is on the
mooring

the



batteries are kept to optimum levels, we leave one
fridge

on



and there is a dump load system for the wind generator.

If



its cloudy and windy the generator does it. If its
sunny

and



still, the panels. If its sunny AND windy;



wow.CheersDannySM



299 Ocean PearlMangonuiNew



Zealand



















From: amelliahona



<no_reply@...>



To:



amelyachtowners@yahoogroups.
com



Sent: Saturday, 3



December 2016 8:50 AM



Subject: Re: [Amel



Yacht Owners] Strange Battery charging…















 







































Hi



Alexandre:



I



don't recall the Serial Number of you boat, but
mine

(SN



335) accepts 8 , group 31 batteries for the house bank.

 I



am in Puerto Rico and just purchased 8 Trojan SCS225

deep



cycle flooded lead acid batteries from Battery Giant (a

USA



national chain) for $237 each (I ordered them and they

took



about 2.5 weeks to arrive, I picked them up in San Juan



(actually Guaynabo which is part of the San Juan

megaplex)



with a rental car.  I have used Battery Giant twice
for



various battery needs and they treated me fairly both

times.



 They were very solicitous.  I worked with Javier,

phone



787-272-0533.  I can
recommend them.  This



is the second set of Trojan SCS225s I have purchased

(last



set bought in Antigua and cost $125 more each because

they



were further down island).  When you buy a set of

batteries



look at the serial numbers on the batteries to see if

you



get a fairly consistent run of numbers to exclude the



potential for getting some older ones mixed with newer

ones



as they sat in stock at the vendor.



I echo the idea that one bad battery



can bring down an entire bank.  As I monitor my bank I

try



to follow the specifics of the battery manufacturer



faithfully (in my case Trojans). I do the



following:



1. I  use



a digital volt meter to check the voltage of each

battery



about once a week when I am aboard.  Testing

conditions:



 I fully charge the bank, then turn off all current

draws,



wait 30 minutes to an hour then check each battery (not

each



pair).  This does not require disconnecting each pair,

just



measure from positive to negative across each
individual



battery.  I log this data in a spreadsheet to spot

trends.



 Takes me about 10 minutes.2.  I check the



battery water level each week when aboard and have the



caretaker check it monthly when not aboard.  Top up
the



level ONLY when the batteries are fully charged.  Use

only



distilled water (NOT



PURIFIED WATER).  You don't want minerals in the

water.



Takes me about 20 minutes and I am surprised at how
much



water they use in the hot Caribbean.3.  I



measure the specific gravity of each cell using a

hydrometer



(6 cells X 8 batteries = 48 cells) once a month.  I do

this



at the same time I check the battery voltages and under

the



same testing conditions.  Log that data to spot
trends.

 A



single failing cell can bring down the whole bank.
Takes

me



about 1 hour.4.  I load test any suspect battery



with the load tester that Bill Rouse



recommended.5.  Make sure you have a digital



thermometer in you battery box, one that has a probe
with

a



programable alarm capability.  A single bad cell can

cause



an overcharging condition that will boil your entire

bank



(been there twice in my 15 years of owning Liahona).

 Takes



hours to remove and clean up the batteries and the

battery



box from the spilled electrolyte not to mention the
harm



done to the batteries.5.  I never leave the boat



plugged in to shore power with a charger on if I am
going

to



be absent from the boat for more than a couple of
hours.

 I



just don't want to burn down my boat from an



overcharging scenario.6.  Equalize your



batteries if you have the capability to do so.  Follow

the



manufacturers directions and be very very careful as
you

do



so to make sure the bank is disconnected from all loads

and



carefully monitor the process.  



I wish you the best, 



Gary S. Silver  s/v Liahona  



 Amel #335   Currently in Puerto Del Rey Marina
Puerto



RicoI































































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