[C320-list] [Spam:SpamScore 3.0] Re: Are 6V Batteries Superior To 12V Batteries

[crashley at gte.net]

Nope.


----- Original Message ----- 
From: "turk" <turk2 at ZOOMINTERNET.NET>
To: "C320-List Yacht Topics" <C320-List at catalina320.com>
Sent: Monday, June 26, 2006 11:57 PM
Subject: Re: [C320-list] [Spam:SpamScore 3.0] Re: Are 6V Batteries Superior 
To 12V Batteries


> Ahh, isn't that what I said?
>
> On Jun 27, 2006, at 12:25 AM, <crashley at gte.net> wrote:
>
>> This is not correct. 2 series 6V, 200 Ah batteries create a single  12V, 
>> 200 Ah battery.
>>
>> Here's an equation for you:
>>
>> P = C * N * Vcell * DOD
>>
>> where P = watts hours extracted
>> C = capacity (Ah)
>> N = number of series cells (6 or 12)
>> Vcell = cell voltage on discharge (~1 V/cell)
>> DOD = depth of discharge (0 to 1 , 1 = 100%)
>>
>> CRA
>> Rosebud #882
>>
>> ----- Original Message ----- From: "turk" <turk2 at ZOOMINTERNET.NET>
>> To: "C320-List" <C320-List at catalina320.com>
>> Sent: Sunday, June 25, 2006 7:00 PM
>> Subject: Re: [C320-list] [Spam:SpamScore 3.0] Re: Are 6V Batteries 
>> Superior To 12V Batteries
>>
>>
>>> Just remember when you run 2 - 200 amp hour 6v batteries in  series,  to 
>>> get 12 volts, each 6v 200 amp hour battery contributes  only 100  amp 
>>> hours at the new 12v rate.   Hmmmm, there's an  equation for this.
>>>
>>>
>>>
>>> On Jun 25, 2006, at 9:50 PM, Warren Updike wrote:
>>>
>>>> I can't disagree with much that's been said.  However, I've not  see 
>>>> the arguement on price and capacity.  I don't know why it is  but I 
>>>> understand golf cart batteries have about 200 AH capacity.   Also, 
>>>> golf cart batteries can be found at Sam's Club, BJ's, and  I presume 
>>>> CostCo for quite a bit less than equivalent 12V 4D  from the likes  of 
>>>> BoatUS. Price of about $60 seems to ring a bell.
>>>>
>>>> A number of people have replaced two 4Ds with four golf cart 
>>>> batteries. Total amp hour capacity goes from about 270 to 400+  AH 
>>>> for less money. Unless there is a kickker, that sounds like  a good 
>>>> deal.  Compare the dimensions of the golf carts vs 4Ds.   I  understand 
>>>> they are a bit taller, but otherwise fit in the  same  horizontal 
>>>> space.
>>>>
>>>> I chartered a 52' Tarten in BVI and the captain said he has 12  6V 
>>>> golf cart batteries on board because they are much less  expensive  to 
>>>> buy, weigh less (easier to install/remove,) and  have more  reserve 
>>>> capacity than equivalent marine deep-cycle  batteries.
>>>>
>>>> Warren & Pattie Updike
>>>> C320, #62, 1994, "Warr De Mar"
>>>> Frog Mortar Creek, Middle River
>>>> Chesapeake Bay
>>>>
>>>
>>>
>>
>>
>>
>>
>
>
>