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Ok I will check the readings in a few days when I get there again. Thanks to
all for your input. Larry I will spending the season on Lake Superior this
coming summer. I plan to launch in Thunder Bay at the begining of May. We
may pass each other this summer.
Regards, Ron O.
----- Original Message -----
From: "Larry DeMers" <>
To: "Ron Ouwehand" <>
Cc: "Live Aboard Forum" <>
Sent: Monday, December 18, 2006 10:32 PM
Subject: Re: lv-ab: Re: Battery gravity
> Ron, did you compensate the hydrometer for the temp of the environment?
> Typically, 70 deg. is the center point where the virtual reading on the
> hydrometer is correct as is, and as the temp varies from 70 deg. case
> temp, you adjust the reading per the hydrometers instructions. If you
> only had the batteries gassing for a short time, no damage was done, as
> 15.5 v is at or near the equalization voltage for the T105. Next time,
> wait a few hours after a rapid charge like that, then make the voltage and
> SPG measurements again. You will note a large difference from the ones
> you got right after the charge (electrolyte was hot and full of
> hydrogen ).
> Larry
>
> Ron Ouwehand wrote:
>
>> Hello list, best wishes for the season! My question is that yesterday I
>> went to the boat ( which is on the hard ) to do some work. I plugged in a
>> 6 amp battery charger for a few hours to top them off for the the next
>> four months of sitting idle. I checked the specific gravity with a meter
>> when I started and it read that they were about just under half charge. I
>> figured no problem, I was going to be there for several hours and I could
>> monitor them, top them up and shut the unit down since it is not an auto
>> shut off unit. After a few hours I measured the voltage and the batteries
>> were gassing and the voltage was up to about 15.5 volts. I decided to
>> check the specific gravity and expected to see the glass unit inside the
>> meter up in the green indicating fully charged. What I found was that it
>> had seemed to go down closer to the red? I unplugged the unit and now I'm
>> wondering if they have been overcharged and are they on their way out?
>> They are Trojan T105's and have never given me any problems in three
>> years. I normally run with a Balmar charger and three stage regulator
>> during the season and always top them off with Deionized water.
>>
>> Any suggestions? I will go back in a few days to see how they are
>> sitting. It may have just been a fluke and they may be fine but it
>> concerned me. Thanks for any input to this matter.
>>
>> Regards, Ron O.
>>
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