Battery monitors and useage.

. I have a question. I have 2 type 31 Optima batterys on board. When I start a race they are at 13.1 volts. I am running Garmin Chart plotter, radio and tacktic instruments. I monitor my voltage thruout the day with the voltage display on my instruments. By the end of the day the instrument reads as low as 12.4 volts. If I turn my radio off it slowly goes back to 12.7 volts. When is my battery at half charge? under load or not? Vr Randy Cal 2-29 Out Patient Channel Islands Ca.

Somewhere between 20 minutes and 24 hours (depending on who you listen to) after you take all loads off the battery is when you can look at voltage. John From: Randy <sa… [at] yahoo.com> To: "Ca… [at] yahoogroups.com" <ca… [at] yahoogroups.com> Sent: Monday, September 10, 2012 12:42 PM Subject: [Cal_Boats] Battery monitors and useage. . I have a question. I have 2 type 31 Optima batterys on board. When I start a race they are at 13.1 volts. I am running Garmin Chart plotter, radio and tacktic instruments. I monitor my voltage thruout the day with the voltage display on my instruments. By the end of the day the instrument reads as low as 12.4 volts. If I turn my radio off it slowly goes back to 12.7 volts. When is my battery at half charge? under load or not? Vr Randy Cal 2-29 Out Patient Channel Islands Ca.

A normal lead acid battery is 12.6 volts fully charged. The 13.1 probably means the battery was freshly charged. Look at the page below and you will see a battery is 1/2 charged at about 12 volts. I made a page for you http://l-36.com/battery.php Allen On Mon, Sep 10, 2012 at 12:42 PM, Randy <sa… [at] yahoo.com> wrote: > ** > > > . > I have a question. I have 2 type 31 Optima batterys on board. When I start > a race they are at 13.1 volts. I am running Garmin Chart plotter, radio and > tacktic instruments. I monitor my voltage thruout the day with the voltage > display on my instruments. By the end of the day the instrument reads as > low as 12.4 volts. If I turn my radio off it slowly goes back to 12.7 > volts. > > When is my battery at half charge? under load or not? > > Vr > > Randy > Cal 2-29 > Out Patient > Channel Islands Ca. > > Sent from my Samsung Epic™ 4G > > >

i thought each cell was 2.2 volts. Reggie To: Ca… [at] yahoogroups.com From: al… [at] gmail.com Date: Fri, 14 Sep 2012 18:05:22 -0700 Subject: Re: [Cal_Boats] Battery monitors and useage. A normal lead acid battery is 12.6 volts fully charged. The 13.1 probably means the battery was freshly charged. Look at the page below and you will see a battery is 1/2 charged at about 12 volts. I made a page for you http://l-36.com/battery.php Allen On Mon, Sep 10, 2012 at 12:42 PM, Randy <sa… [at] yahoo.com> wrote: . I have a question. I have 2 type 31 Optima batterys on board. When I start a race they are at 13.1 volts. I am running Garmin Chart plotter, radio and tacktic instruments. I monitor my voltage thruout the day with the voltage display on my instruments. By the end of the day the instrument reads as low as 12.4 volts. If I turn my radio off it slowly goes back to 12.7 volts. When is my battery at half charge? under load or not? Vr Randy Cal 2-29 Out Patient Channel Islands Ca.

Randy I like this page. http://www.batterystuff.com/kb/articles/battery-articles/battery-basics.html From: r good <my… [at] hotmail.com> To: ca… [at] yahoogroups.com Sent: Friday, September 14, 2012 7:14 PM Subject: RE: [Cal_Boats] Battery monitors and useage. i thought each cell was 2.2 volts. Reggie To: Ca… [at] yahoogroups.com From: al… [at] gmail.com Date: Fri, 14 Sep 2012 18:05:22 -0700 Subject: Re: [Cal_Boats] Battery monitors and useage. A normal lead acid battery is 12.6 volts fully charged. The 13.1 probably means the battery was freshly charged. Look at the page below and you will see a battery is 1/2 charged at about 12 volts. I made a page for you http://l-36.com/battery.php Allen On Mon, Sep 10, 2012 at 12:42 PM, Randy <sa… [at] yahoo.com> wrote: > >. >I have a question. I have 2 type 31 Optima batterys on board. When I start a race they are at 13.1 volts. I am running Garmin Chart plotter, radio and tacktic instruments. I monitor my voltage thruout the day with the voltage display on my instruments. By the end of the day the instrument reads as low as 12.4 volts. If I turn my radio off it slowly goes back to 12.7 volts. > > > >When is my battery at half charge? under load or not? > > >Vr > > >Randy >Cal 2-29 >Out Patient >Channel Islands Ca. > >Sent from my Samsung Epic™ 4G >

great info my brother lives in Grants Pass and I think I will send him over there to check it out Dave Paulson Cal less ----- Original Message ----- From: Chuck Lennox To: Ca… [at] yahoogroups.com Sent: Friday, September 14, 2012 8:10 PM Subject: Re: [Cal_Boats] Battery monitors and useage. Randy I like this page. http://www.batterystuff.com/kb/articles/battery-articles/battery-basics.html From: r good <my… [at] hotmail.com> To: ca… [at] yahoogroups.com Sent: Friday, September 14, 2012 7:14 PM Subject: RE: [Cal_Boats] Battery monitors and useage. i thought each cell was 2.2 volts. Reggie To: Ca… [at] yahoogroups.com From: al… [at] gmail.com Date: Fri, 14 Sep 2012 18:05:22 -0700 Subject: Re: [Cal_Boats] Battery monitors and useage. A normal lead acid battery is 12.6 volts fully charged. The 13.1 probably means the battery was freshly charged. Look at the page below and you will see a battery is 1/2 charged at about 12 volts. I made a page for you http://l-36.com/battery.php Allen On Mon, Sep 10, 2012 at 12:42 PM, Randy <sa… [at] yahoo.com> wrote: . I have a question. I have 2 type 31 Optima batterys on board. When I start a race they are at 13.1 volts. I am running Garmin Chart plotter, radio and tacktic instruments. I monitor my voltage thruout the day with the voltage display on my instruments. By the end of the day the instrument reads as low as 12.4 volts. If I turn my radio off it slowly goes back to 12.7 volts. When is my battery at half charge? under load or not? Vr Randy Cal 2-29 Out Patient Channel Islands Ca. Sent from my Samsung Epic™ 4G